1
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Ramachandran A, Wilbur GR, Mathew R, Mason A, O'Neal S, Deppe DG, Hall KC. Robust parallel laser driving of quantum dots for multiplexing of quantum light sources. Sci Rep 2024; 14:5356. [PMID: 38438449 PMCID: PMC10912409 DOI: 10.1038/s41598-024-55634-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 02/23/2024] [Indexed: 03/06/2024] Open
Abstract
Deterministic sources of quantum light (i.e. single photons or pairs of entangled photons) are required for a whole host of applications in quantum technology, including quantum imaging, quantum cryptography and the long-distance transfer of quantum information in future quantum networks. Semiconductor quantum dots are ideal candidates for solid-state quantum emitters as these artificial atoms have large dipole moments and a quantum confined energy level structure, enabling the realization of single photon sources with high repetition rates and high single photon purity. Quantum dots may also be triggered using a laser pulse for on-demand operation. The naturally-occurring size variations in ensembles of quantum dots offers the potential to increase the bandwidth of quantum communication systems through wavelength-division multiplexing, but conventional laser triggering schemes based on Rabi rotations are ineffective when applied to inequivalent emitters. Here we report the demonstration of the simultaneous triggering of >10 quantum dots using adiabatic rapid passage. We show that high-fidelity quantum state inversion is possible in a system of quantum dots with a 15 meV range of optical transition energies using a single broadband, chirped laser pulse, laying the foundation for high-bandwidth, multiplexed quantum networks.
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Affiliation(s)
- Ajan Ramachandran
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Grant R Wilbur
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Reuble Mathew
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Allister Mason
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Sabine O'Neal
- The College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816-2700, USA
- IMEC, Kissimmee, FL, 34744, USA
| | - Dennis G Deppe
- The College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816-2700, USA
- SdPhotonics, Richardson, TX, 75081, USA
| | - Kimberley C Hall
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, B3H 4R2, Canada.
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2
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Gross F, Mancini A, Breton B, Kobayashi H, Pereira PHS, Le Gouill C, Bouvier M, Schann S, Leroy X, Sabbagh L. EGFR signaling and pharmacology in oncology revealed with innovative BRET-based biosensors. Commun Biol 2024; 7:250. [PMID: 38429428 PMCID: PMC10907714 DOI: 10.1038/s42003-024-05965-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 02/23/2024] [Indexed: 03/03/2024] Open
Abstract
Mutations of receptor tyrosine kinases (RTKs) are associated with the development of many cancers by modifying receptor signaling and contributing to drug resistance in clinical settings. We present enhanced bystander bioluminescence resonance energy transfer-based biosensors providing new insights into RTK biology and pharmacology critical for the development of more effective RTK-targeting drugs. Distinct SH2-specific effector biosensors allow for real-time and spatiotemporal monitoring of signal transduction pathways engaged upon RTK activation. Using EGFR as a model, we demonstrate the capacity of these biosensors to differentiate unique signaling signatures, with EGF and Epiregulin ligands displaying differences in efficacy, potency, and responses within different cellular compartments. We further demonstrate that EGFR single point mutations found in Glioblastoma or non-small cell lung cancer, impact the constitutive activity of EGFR and response to tyrosine kinase inhibitor. The BRET-based biosensors are compatible with microscopy, and more importantly characterize the next generation of therapeutics directed against RTKs.
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Affiliation(s)
- Florence Gross
- Domain Therapeutics North America Inc., 7171 Frederick-Banting, Saint-Laurent, Quebec, H4S 1Z9, Canada
| | - Arturo Mancini
- Domain Therapeutics North America Inc., 7171 Frederick-Banting, Saint-Laurent, Quebec, H4S 1Z9, Canada
| | - Billy Breton
- Institute for Research in Immunology and Cancer, and Department of Biochemistry and Molecular Medicine, University of Montreal, 2950 Chemin de Polytechnique, Montreal, Quebec, H3T 1J4, Canada
| | - Hiroyuki Kobayashi
- Institute for Research in Immunology and Cancer, and Department of Biochemistry and Molecular Medicine, University of Montreal, 2950 Chemin de Polytechnique, Montreal, Quebec, H3T 1J4, Canada
| | - Pedro Henrique Scarpelli Pereira
- Institute for Research in Immunology and Cancer, and Department of Biochemistry and Molecular Medicine, University of Montreal, 2950 Chemin de Polytechnique, Montreal, Quebec, H3T 1J4, Canada
| | - Christian Le Gouill
- Institute for Research in Immunology and Cancer, and Department of Biochemistry and Molecular Medicine, University of Montreal, 2950 Chemin de Polytechnique, Montreal, Quebec, H3T 1J4, Canada
| | - Michel Bouvier
- Institute for Research in Immunology and Cancer, and Department of Biochemistry and Molecular Medicine, University of Montreal, 2950 Chemin de Polytechnique, Montreal, Quebec, H3T 1J4, Canada
| | - Stephan Schann
- Domain Therapeutics SA, 220 Boulevard Gonthier D'Andernach, 67400, Strasbourg-Illkirch, France
| | - Xavier Leroy
- Domain Therapeutics SA, 220 Boulevard Gonthier D'Andernach, 67400, Strasbourg-Illkirch, France
| | - Laurent Sabbagh
- Domain Therapeutics North America Inc., 7171 Frederick-Banting, Saint-Laurent, Quebec, H4S 1Z9, Canada.
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3
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Kim KS, Couillard M, Tang Z, Shin H, Poitras D, Cheng C, Naboka O, Ruth D, Plunkett M, Chen L, Gaburici L, Lacelle T, Nganbe M, Zou Y. Continuous synthesis of high-entropy alloy nanoparticles by in-flight alloying of elemental metals. Nat Commun 2024; 15:1450. [PMID: 38365786 PMCID: PMC10873330 DOI: 10.1038/s41467-024-45731-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 02/01/2024] [Indexed: 02/18/2024] Open
Abstract
High-entropy alloy (HEA) nanoparticles (NPs) exhibit unusual combinations of functional properties. However, their scalable synthesis remains a significant challenge requiring extreme fabrication conditions. Metal salts are often employed as precursors because of their low decomposition temperatures, yet contain potential impurities. Here, we propose an ultrafast (< 100 ms), one-step method that enables the continuous synthesis of HEA NPs directly from elemental metal powders via in-flight alloying. A high-temperature plasma jet ( > 5000 K) is employed for rapid heating/cooling (103 - 105 K s-1), and demonstrates the synthesis of CrFeCoNiMo HEA NPs ( ~ 50 nm) at a high rate approaching 35 g h-1 with a conversion efficiency of 42%. Our thermofluid simulation reveals that the properties of HEA NPs can be tailored by the plasma gas which affects the thermal history of NPs. The HEA NPs demonstrate an excellent light absorption of > 96% over a wide spectrum, representing great potential for photothermal conversion of solar energy at large scales. Our work shows that the thermal plasma process developed could provide a promising route towards industrial scale production of HEA NPs.
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Affiliation(s)
- Keun Su Kim
- Security and Disruptive Technologies Research Centre, National Research Council Canada, Ottawa, ON, K1A 0R6, Canada.
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON, M5S 3G8, Canada.
- Department of Mechanical Engineering, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
| | - Martin Couillard
- Energy, Mining and Environment Research Centre, National Research Council Canada, Ottawa, ON, K1A 0R6, Canada
| | - Ziqi Tang
- Department of Mechanical Engineering, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
| | - Homin Shin
- Security and Disruptive Technologies Research Centre, National Research Council Canada, Ottawa, ON, K1A 0R6, Canada
| | - Daniel Poitras
- Advanced Electronics and Photonics Research Centre, National Research Council Canada, Ottawa, ON, K1A 0R6, Canada
| | - Changjun Cheng
- Department of Materials Science and Engineering, University of Toronto, Toronto, ON, M5S 3G8, Canada
| | - Olga Naboka
- Construction Research Centre, National Research Council Canada, Ottawa, ON, K1A 0R6, Canada
| | - Dean Ruth
- Security and Disruptive Technologies Research Centre, National Research Council Canada, Ottawa, ON, K1A 0R6, Canada
| | - Mark Plunkett
- Security and Disruptive Technologies Research Centre, National Research Council Canada, Ottawa, ON, K1A 0R6, Canada
| | - Lixin Chen
- Department of Materials Science and Engineering, University of Toronto, Toronto, ON, M5S 3G8, Canada
| | - Liliana Gaburici
- Security and Disruptive Technologies Research Centre, National Research Council Canada, Ottawa, ON, K1A 0R6, Canada
| | - Thomas Lacelle
- Security and Disruptive Technologies Research Centre, National Research Council Canada, Ottawa, ON, K1A 0R6, Canada
| | - Michel Nganbe
- Department of Mechanical Engineering, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
| | - Yu Zou
- Department of Materials Science and Engineering, University of Toronto, Toronto, ON, M5S 3G8, Canada
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4
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Jiménez-Galán Á, Bossaer C, Ernotte G, Parks AM, Silva REF, Villeneuve DM, Staudte A, Brabec T, Luican-Mayer A, Vampa G. Orbital perspective on high-harmonic generation from solids. Nat Commun 2023; 14:8421. [PMID: 38110439 PMCID: PMC10728088 DOI: 10.1038/s41467-023-44041-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 11/28/2023] [Indexed: 12/20/2023] Open
Abstract
High-harmonic generation in solids allows probing and controlling electron dynamics in crystals on few femtosecond timescales, paving the way to lightwave electronics. In the spatial domain, recent advances in the real-space interpretation of high-harmonic emission in solids allows imaging the field-free, static, potential of the valence electrons with picometer resolution. The combination of such extreme spatial and temporal resolutions to measure and control strong-field dynamics in solids at the atomic scale is poised to unlock a new frontier of lightwave electronics. Here, we report a strong intensity-dependent anisotropy in the high-harmonic generation from ReS2 that we attribute to angle-dependent interference of currents from the different atoms in the unit cell. Furthermore, we demonstrate how the laser parameters control the relative contribution of these atoms to the high-harmonic emission. Our findings provide an unprecedented atomic perspective on strong-field dynamics in crystals, revealing key factors to consider in the route towards developing efficient harmonic emitters.
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Affiliation(s)
- Álvaro Jiménez-Galán
- Joint Attosecond Science Laboratory, National Research Council of Canada and University of Ottawa, Ottawa, ON, K1A 0R6, Canada
- Max-Born-Institute, Max-Born Strasse 2A, D-12489, Berlin, Germany
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain
| | - Chandler Bossaer
- Joint Attosecond Science Laboratory, National Research Council of Canada and University of Ottawa, Ottawa, ON, K1A 0R6, Canada
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
| | - Guilmot Ernotte
- Joint Attosecond Science Laboratory, National Research Council of Canada and University of Ottawa, Ottawa, ON, K1A 0R6, Canada
| | - Andrew M Parks
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
| | - Rui E F Silva
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain
| | - David M Villeneuve
- Joint Attosecond Science Laboratory, National Research Council of Canada and University of Ottawa, Ottawa, ON, K1A 0R6, Canada
| | - André Staudte
- Joint Attosecond Science Laboratory, National Research Council of Canada and University of Ottawa, Ottawa, ON, K1A 0R6, Canada
| | - Thomas Brabec
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
| | - Adina Luican-Mayer
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
| | - Giulio Vampa
- Joint Attosecond Science Laboratory, National Research Council of Canada and University of Ottawa, Ottawa, ON, K1A 0R6, Canada.
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5
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Du C, Mills JP, Yohannes AG, Wei W, Wang L, Lu S, Lian JX, Wang M, Guo T, Wang X, Zhou H, Sun CJ, Wen JZ, Kendall B, Couillard M, Guo H, Tan Z, Siahrostami S, Wu YA. Cascade electrocatalysis via AgCu single-atom alloy and Ag nanoparticles in CO 2 electroreduction toward multicarbon products. Nat Commun 2023; 14:6142. [PMID: 37798263 PMCID: PMC10556094 DOI: 10.1038/s41467-023-41871-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 09/18/2023] [Indexed: 10/07/2023] Open
Abstract
Electrocatalytic CO2 reduction into value-added multicarbon products offers a means to close the anthropogenic carbon cycle using renewable electricity. However, the unsatisfactory catalytic selectivity for multicarbon products severely hinders the practical application of this technology. In this paper, we report a cascade AgCu single-atom and nanoparticle electrocatalyst, in which Ag nanoparticles produce CO and AgCu single-atom alloys promote C-C coupling kinetics. As a result, a Faradaic efficiency (FE) of 94 ± 4% toward multicarbon products is achieved with the as-prepared AgCu single-atom and nanoparticle catalyst under ~720 mA cm-2 working current density at -0.65 V in a flow cell with alkaline electrolyte. Density functional theory calculations further demonstrate that the high multicarbon product selectivity results from cooperation between AgCu single-atom alloys and Ag nanoparticles, wherein the Ag single-atom doping of Cu nanoparticles increases the adsorption energy of *CO on Cu sites due to the asymmetric bonding of the Cu atom to the adjacent Ag atom with a compressive strain.
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Affiliation(s)
- Cheng Du
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Joel P Mills
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Asfaw G Yohannes
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
| | - Wei Wei
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Lei Wang
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Siyan Lu
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Jian-Xiang Lian
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
| | - Maoyu Wang
- X-Ray Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Tao Guo
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Xiyang Wang
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Hua Zhou
- X-Ray Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Cheng-Jun Sun
- X-Ray Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - John Z Wen
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Brian Kendall
- Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Martin Couillard
- Energy, Mining and Environment Research Center, National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, K1A 0R6, Canada
| | - Hongsheng Guo
- Energy, Mining and Environment Research Center, National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, K1A 0R6, Canada
| | - ZhongChao Tan
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
| | - Samira Siahrostami
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada.
| | - Yimin A Wu
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
- Interdisciplinary Center on Climate Change, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
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6
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Orth A, Webber D, Zhang Y, Sampson KL, de Haan HW, Lacelle T, Lam R, Solis D, Dayanandan S, Waddell T, Lewis T, Taylor HK, Boisvert J, Paquet C. Deconvolution volumetric additive manufacturing. Nat Commun 2023; 14:4412. [PMID: 37479831 PMCID: PMC10362001 DOI: 10.1038/s41467-023-39886-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 06/30/2023] [Indexed: 07/23/2023] Open
Abstract
Volumetric additive manufacturing techniques are a promising pathway to ultra-rapid light-based 3D fabrication. Their widespread adoption, however, demands significant improvement in print fidelity. Currently, volumetric additive manufacturing prints suffer from systematic undercuring of fine features, making it impossible to print objects containing a wide range of feature sizes, precluding effective adoption in many applications. Here, we uncover the reason for this limitation: light dose spread in the resin due to chemical diffusion and optical blurring, which becomes significant for features ⪅0.5 mm. We develop a model that quantitatively predicts the variation of print time with feature size and demonstrate a deconvolution method to correct for this error. This enables prints previously beyond the capabilities of volumetric additive manufacturing, such as a complex gyroid structure with variable thickness and a fine-toothed gear. These results position volumetric additive manufacturing as a mature 3D printing method, all but eliminating the gap to industry-standard print fidelity.
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Affiliation(s)
- Antony Orth
- National Research Council of Canada, Ottawa, ON, Canada.
| | - Daniel Webber
- National Research Council of Canada, Ottawa, ON, Canada.
| | - Yujie Zhang
- National Research Council of Canada, Ottawa, ON, Canada
| | | | | | | | - Rene Lam
- National Research Council of Canada, Ottawa, ON, Canada
| | - Daphene Solis
- National Research Council of Canada, Ottawa, ON, Canada
| | | | | | - Tasha Lewis
- University of California Berkeley, Berkeley, CA, USA
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7
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Couture N, Cui W, Lippl M, Ostic R, Fandio DJJ, Yalavarthi EK, Vishnuradhan A, Gamouras A, Joly NY, Ménard JM. Single-pulse terahertz spectroscopy monitoring sub-millisecond time dynamics at a rate of 50 kHz. Nat Commun 2023; 14:2595. [PMID: 37147407 PMCID: PMC10163249 DOI: 10.1038/s41467-023-38354-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 04/25/2023] [Indexed: 05/07/2023] Open
Abstract
Slow motion movies allow us to see intricate details of the mechanical dynamics of complex phenomena. If the images in each frame are replaced by terahertz (THz) waves, such movies can monitor low-energy resonances and reveal fast structural or chemical transitions. Here, we combine THz spectroscopy as a non-invasive optical probe with a real-time monitoring technique to demonstrate the ability to resolve non-reproducible phenomena at 50k frames per second, extracting each of the generated THz waveforms every 20 μs. The concept, based on a photonic time-stretch technique to achieve unprecedented data acquisition speeds, is demonstrated by monitoring sub-millisecond dynamics of hot carriers injected in silicon by successive resonant pulses as a saturation density is established. Our experimental configuration will play a crucial role in revealing fast irreversible physical and chemical processes at THz frequencies with microsecond resolution to enable new applications in fundamental research as well as in industry.
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Affiliation(s)
- Nicolas Couture
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
- Max Planck Centre for Extreme and Quantum Photonics, Ottawa, ON, K1N 6N5, Canada.
| | - Wei Cui
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
- Max Planck Centre for Extreme and Quantum Photonics, Ottawa, ON, K1N 6N5, Canada
| | - Markus Lippl
- Max Planck Institute for the Science of Light, 91058, Erlangen, Germany
- Department of Physics, University of Erlangen-Nürnberg, 91058, Erlangen, Germany
| | - Rachel Ostic
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
- Max Planck Centre for Extreme and Quantum Photonics, Ottawa, ON, K1N 6N5, Canada
| | - Défi Junior Jubgang Fandio
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
- Max Planck Centre for Extreme and Quantum Photonics, Ottawa, ON, K1N 6N5, Canada
| | - Eeswar Kumar Yalavarthi
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
- Max Planck Centre for Extreme and Quantum Photonics, Ottawa, ON, K1N 6N5, Canada
| | - Aswin Vishnuradhan
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
- Max Planck Centre for Extreme and Quantum Photonics, Ottawa, ON, K1N 6N5, Canada
| | - Angela Gamouras
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada
- National Research Council Canada, Ottawa, ON, K1A 0R6, Canada
| | - Nicolas Y Joly
- Max Planck Institute for the Science of Light, 91058, Erlangen, Germany
- Department of Physics, University of Erlangen-Nürnberg, 91058, Erlangen, Germany
- Interdisciplinary Center for Nanostructured Films, 91058, Erlangen, Germany
| | - Jean-Michel Ménard
- Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
- Max Planck Centre for Extreme and Quantum Photonics, Ottawa, ON, K1N 6N5, Canada.
- National Research Council Canada, Ottawa, ON, K1A 0R6, Canada.
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8
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Quiza L, Tremblay J, Pagé AP, Greer CW, Pozniak CJ, Li R, Haug B, Hemmingsen SM, St-Arnaud M, Yergeau E. The effect of wheat genotype on the microbiome is more evident in roots and varies through time. ISME Commun 2023; 3:32. [PMID: 37076737 PMCID: PMC10115884 DOI: 10.1038/s43705-023-00238-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 03/27/2023] [Accepted: 04/04/2023] [Indexed: 04/21/2023]
Abstract
Crop breeding has traditionally ignored the plant-associated microbial communities. Considering the interactions between plant genotype and associated microbiota is of value since different genotypes of the same crop often harbor distinct microbial communities which can influence the plant phenotype. However, recent studies have reported contrasting results, which led us to hypothesize that the effect of genotype is constrained by growth stages, sampling year and plant compartment. To test this hypothesis, we sampled bulk soil, rhizosphere soil and roots of 10 field-grown wheat genotypes, twice per year, for 4 years. DNA was extracted and regions of the bacterial 16 S rRNA and CPN60 genes and the fungal ITS region were amplified and sequenced. The effect of genotype was highly contingent on the time of sampling and on the plant compartment sampled. Only for a few sampling dates, were the microbial communities significantly different across genotypes. The effect of genotype was most often significant for root microbial communities. The three marker genes used provided a highly coherent picture of the effect of genotype. Taken together, our results confirm that microbial communities in the plant environment strongly vary across compartments, growth stages, and years, and that this can mask the effect of genotype.
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Affiliation(s)
- Liliana Quiza
- Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique, Laval, QC, Canada
| | - Julien Tremblay
- Energy, Mining, and Environment Research Centre, National Research Council Canada, Montréal, QC, Canada
| | - Antoine P Pagé
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, Saskatoon, SK, Canada
| | - Charles W Greer
- Energy, Mining, and Environment Research Centre, National Research Council Canada, Montréal, QC, Canada
| | | | - Rong Li
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, Saskatoon, SK, Canada
| | - Brenda Haug
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, Saskatoon, SK, Canada
| | - Sean M Hemmingsen
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, Saskatoon, SK, Canada
| | - Marc St-Arnaud
- Institut de recherche en biologie végétale, Université de Montréal and Jardin botanique de Montréal, 4101 rue Sherbrooke E., Montréal, QC, Canada
| | - Etienne Yergeau
- Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique, Laval, QC, Canada.
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9
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Liu DY, Phillips L, Wilson DM, Fulton KM, Twine SM, Wong A, Linington RG. Collateral sensitivity profiling in drug-resistant Escherichia coli identifies natural products suppressing cephalosporin resistance. Nat Commun 2023; 14:1976. [PMID: 37031190 PMCID: PMC10082850 DOI: 10.1038/s41467-023-37624-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/22/2023] [Indexed: 04/10/2023] Open
Abstract
The rapid emergence of antimicrobial resistance presents serious health challenges to the management of infectious diseases, a problem that is further exacerbated by slowing rates of antimicrobial drug discovery in recent years. The phenomenon of collateral sensitivity (CS), whereby resistance to one drug is accompanied by increased sensitivity to another, provides new opportunities to address both these challenges. Here, we present a high-throughput screening platform termed Collateral Sensitivity Profiling (CSP) to map the difference in bioactivity of large chemical libraries across 29 drug-resistant strains of E. coli. CSP screening of 80 commercial antimicrobials demonstrated multiple CS interactions. Further screening of a 6195-member natural product library revealed extensive CS relationships in nature. In particular, we report the isolation of known and new analogues of borrelidin A with potent CS activities against cephalosporin-resistant strains. Co-dosing ceftazidime with borrelidin A slows broader cephalosporin resistance with no recognizable resistance to borrelidin A itself.
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Affiliation(s)
- Dennis Y Liu
- Department of Chemistry, Simon Fraser University, 8888 University Dr., V5A 1S6, Burnaby, BC, Canada
| | - Laura Phillips
- Department of Biology, Carleton University, 1125 Colonel By Dr., K1S 5B6, Ottawa, ON, Canada
| | - Darryl M Wilson
- Department of Chemistry, Simon Fraser University, 8888 University Dr., V5A 1S6, Burnaby, BC, Canada
| | - Kelly M Fulton
- Human Health Therapeutics Research Center, National Research Council Canada, 100 Sussex Dr., K1N 5A2, Ottawa, ON, Canada
| | - Susan M Twine
- Department of Biology, Carleton University, 1125 Colonel By Dr., K1S 5B6, Ottawa, ON, Canada
- Human Health Therapeutics Research Center, National Research Council Canada, 100 Sussex Dr., K1N 5A2, Ottawa, ON, Canada
| | - Alex Wong
- Department of Biology, Carleton University, 1125 Colonel By Dr., K1S 5B6, Ottawa, ON, Canada
- Institute for Advancing Health Through Agriculture, Texas A&M AgriLife, 1500 Research Parkway, 77845, College Station, TX, USA
| | - Roger G Linington
- Department of Chemistry, Simon Fraser University, 8888 University Dr., V5A 1S6, Burnaby, BC, Canada.
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10
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Sajeed S, Jennewein T. Observing quantum coherence from photons scattered in free-space. Light Sci Appl 2021; 10:121. [PMID: 34099624 PMCID: PMC8184973 DOI: 10.1038/s41377-021-00565-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/18/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
Quantum channels in free-space, an essential prerequisite for fundamental tests of quantum mechanics and quantum technologies in open space, have so far been based on direct line-of-sight because the predominant approaches for photon-encoding, including polarization and spatial modes, are not compatible with randomly scattered photons. Here we demonstrate a novel approach to transfer and recover quantum coherence from scattered, non-line-of-sight photons analyzed in a multimode and imaging interferometer for time-bins, combined with photon detection based on a 8 × 8 single-photon-detector-array. The observed time-bin visibility for scattered photons remained at a high 95% over a wide scattering angle range of -450 to +450, while the individual pixels in the detector array resolve or track an image in its field of view of ca. 0.5°. Using our method, we demonstrate the viability of two novel applications. Firstly, using scattered photons as an indirect channel for quantum communication thereby enabling non-line-of-sight quantum communication with background suppression, and secondly, using the combined arrival time and quantum coherence to enhance the contrast of low-light imaging and laser ranging under high background light. We believe our method will instigate new lines for research and development on applying photon coherence from scattered signals to quantum sensing, imaging, and communication in free-space environments.
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Affiliation(s)
- Shihan Sajeed
- Institute for Quantum Computing, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
- Department of Physics and Astronomy, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
| | - Thomas Jennewein
- Institute for Quantum Computing, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
- Department of Physics and Astronomy, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
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11
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Lake DP, Mitchell M, Sanders BC, Barclay PE. Two-colour interferometry and switching through optomechanical dark mode excitation. Nat Commun 2020; 11:2208. [PMID: 32371992 PMCID: PMC7200651 DOI: 10.1038/s41467-020-15625-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/12/2020] [Indexed: 11/09/2022] Open
Abstract
Efficient switching and routing of photons of different wavelengths is a requirement for realizing a quantum internet. Multimode optomechanical systems can solve this technological challenge and enable studies of fundamental science involving widely separated wavelengths that are inaccessible to single-mode optomechanical systems. To this end, we demonstrate interference between two optomechanically induced transparency processes in a diamond on-chip cavity. This system allows us to directly observe the dynamics of an optomechanical dark mode that interferes photons at different wavelengths via their mutual coupling to a common mechanical resonance. This dark mode does not transfer energy to the dissipative mechanical reservoir and is predicted to enable quantum information processing applications that are insensitive to mechanical decoherence. Control of the dark mode is also utilized to demonstrate all-optical, two-colour switching and interference with light separated by over 5 THz in frequency.
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Affiliation(s)
- David P Lake
- Department of Physics and Astronomy and Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Matthew Mitchell
- Department of Physics and Astronomy and Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Barry C Sanders
- Department of Physics and Astronomy and Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Paul E Barclay
- Department of Physics and Astronomy and Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada.
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