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Iyer PP, Prescott S, Addamane S, Jung H, Renteria E, Henshaw J, Mounce A, Luk TS, Mitrofanov O, Brener I. Control of Quantized Spontaneous Emission from Single GaAs Quantum Dots Embedded in Huygens' Metasurfaces. NANO LETTERS 2024. [PMID: 38620181 DOI: 10.1021/acs.nanolett.3c04846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Advancements in photonic quantum information systems (QIS) have driven the development of high-brightness, on-demand, and indistinguishable semiconductor epitaxial quantum dots (QDs) as single photon sources. Strain-free, monodisperse, and spatially sparse local-droplet-etched (LDE) QDs have recently been demonstrated as a superior alternative to traditional Stranski-Krastanov QDs. However, integration of LDE QDs into nanophotonic architectures with the ability to scale to many interacting QDs is yet to be demonstrated. We present a potential solution by embedding isolated LDE GaAs QDs within an Al0.4Ga0.6As Huygens' metasurface with spectrally overlapping fundamental electric and magnetic dipolar resonances. We demonstrate for the first time a position- and size-independent, 1 order of magnitude increase in the collection efficiency and emission lifetime control for single-photon emission from LDE QDs embedded within the Huygens' metasurfaces. Our results represent a significant step toward leveraging the advantages of LDE QDs within nanophotonic architectures to meet the scalability demands of photonic QIS.
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Affiliation(s)
- Prasad P Iyer
- Center for Integrated Nanotechnologies, Sandia National Lab, Albuquerque, New Mexico 87185, United States
- Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Samuel Prescott
- University College London, Electronic and Electrical Engineering, London WC1E 7JE, U.K
| | - Sadhvikas Addamane
- Center for Integrated Nanotechnologies, Sandia National Lab, Albuquerque, New Mexico 87185, United States
- Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Hyunseung Jung
- Center for Integrated Nanotechnologies, Sandia National Lab, Albuquerque, New Mexico 87185, United States
- Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Emma Renteria
- Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87185, United States
| | - Jacob Henshaw
- Center for Integrated Nanotechnologies, Sandia National Lab, Albuquerque, New Mexico 87185, United States
- Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Andrew Mounce
- Center for Integrated Nanotechnologies, Sandia National Lab, Albuquerque, New Mexico 87185, United States
- Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Ting S Luk
- Center for Integrated Nanotechnologies, Sandia National Lab, Albuquerque, New Mexico 87185, United States
- Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
| | - Oleg Mitrofanov
- University College London, Electronic and Electrical Engineering, London WC1E 7JE, U.K
| | - Igal Brener
- Center for Integrated Nanotechnologies, Sandia National Lab, Albuquerque, New Mexico 87185, United States
- Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
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Grim JQ, Bracker AS, Zalalutdinov M, Carter SG, Kozen AC, Kim M, Kim CS, Mlack JT, Yakes M, Lee B, Gammon D. Scalable in operando strain tuning in nanophotonic waveguides enabling three-quantum-dot superradiance. NATURE MATERIALS 2019; 18:963-969. [PMID: 31285618 DOI: 10.1038/s41563-019-0418-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 05/31/2019] [Indexed: 06/09/2023]
Abstract
The quest for an integrated quantum optics platform has motivated the field of semiconductor quantum dot research for two decades. Demonstrations of quantum light sources, single photon switches, transistors and spin-photon interfaces have become very advanced. Yet the fundamental problem that every quantum dot is different prevents integration and scaling beyond a few quantum dots. Here, we address this challenge by patterning strain via local phase transitions to selectively tune individual quantum dots that are embedded in a photonic architecture. The patterning is implemented with in operando laser crystallization of a thin HfO2 film 'sheath' on the surface of a GaAs waveguide. Using this approach, we tune InAs quantum dot emission energies over the full inhomogeneous distribution with a step size down to the homogeneous linewidth and a spatial resolution better than 1 µm. Using these capabilities, we tune multiple quantum dots into resonance within the same waveguide and demonstrate a quantum interaction via superradiant emission from three quantum dots.
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Affiliation(s)
- Joel Q Grim
- US Naval Research Laboratory, Washington, DC, USA.
| | | | | | | | | | | | - Chul Soo Kim
- US Naval Research Laboratory, Washington, DC, USA
| | | | | | - Bumsu Lee
- US Naval Research Laboratory, Washington, DC, USA
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Sun S, Kim H, Solomon GS, Waks E. A quantum phase switch between a single solid-state spin and a photon. NATURE NANOTECHNOLOGY 2016; 11:539-544. [PMID: 26854569 DOI: 10.1038/nnano.2015.334] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 12/16/2015] [Indexed: 06/05/2023]
Abstract
Interactions between single spins and photons are essential for quantum networks and distributed quantum computation. Achieving spin-photon interactions in a solid-state device could enable compact chip-integrated quantum circuits operating at gigahertz bandwidths. Many theoretical works have suggested using spins embedded in nanophotonic structures to attain this high-speed interface. These proposals implement a quantum switch where the spin flips the state of the photon and a photon flips the spin state. However, such a switch has not yet been realized using a solid-state spin system. Here, we report an experimental realization of a spin-photon quantum switch using a single solid-state spin embedded in a nanophotonic cavity. We show that the spin state strongly modulates the polarization of a reflected photon, and a single reflected photon coherently rotates the spin state. These strong spin-photon interactions open up a promising direction for solid-state implementations of high-speed quantum networks and on-chip quantum information processors using nanophotonic devices.
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Affiliation(s)
- Shuo Sun
- Department of Electrical and Computer Engineering, Institute for Research in Electronics and Applied Physics, Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, USA
| | - Hyochul Kim
- Department of Electrical and Computer Engineering, Institute for Research in Electronics and Applied Physics, Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, USA
| | - Glenn S Solomon
- Joint Quantum Institute, National Institute of Standards and Technology and University of Maryland, Gaithersburg, Maryland 20899, USA
| | - Edo Waks
- Department of Electrical and Computer Engineering, Institute for Research in Electronics and Applied Physics, Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, USA
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Herranz J, Wewior L, Alén B, Fuster D, González L, González Y. Role of re-growth interface preparation process for spectral line-width reduction of single InAs site-controlled quantum dots. NANOTECHNOLOGY 2015; 26:195301. [PMID: 25895541 DOI: 10.1088/0957-4484/26/19/195301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We present growth and optical characterization measurements of single InAs site-controlled quantum dots (SCQDs) grown by molecular beam epitaxy on GaAs (001) patterned substrates by atomic force microscopy oxidation lithography. InAs SCQDs directly grown on the patterned surface were used as a seed layer and strain template for the nucleation of optically active single InAs SCQDs. The preservation of the initial geometry of the engraved pattern motifs after the re-growth interface preparation process, the lack of buffer layer growth prior to InAs seed layer deposition and the development of suitable growth conditions provide us an improvement of the SCQDs' active layer optical properties while retaining a high ratio of single occupation (89%). In this work a fivefold reduction of the average optical line-width from 870 μeV to 156 μeV for InAs SCQDs located 15 nm from the re-growth interface is obtained by increasing the temperature of the initial thermal treatment step of the re-growth interface from 490 °C to 530 °C.
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Affiliation(s)
- Jesús Herranz
- IMM-Instituto de Microelectrónica de Madrid (CNM-CSIC), Isaac Newton 8, PTM, E-28760 Tres Cantos, Madrid, Spain
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Makhonin MN, Dixon JE, Coles RJ, Royall B, Luxmoore IJ, Clarke E, Hugues M, Skolnick MS, Fox AM. Waveguide coupled resonance fluorescence from on-chip quantum emitter. NANO LETTERS 2014; 14:6997-7002. [PMID: 25381734 DOI: 10.1021/nl5032937] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Resonantly driven quantum emitters offer a very promising route to obtain highly coherent sources of single photons required for applications in quantum information processing (QIP). Realizing this for on-chip scalable devices would be important for scientific advances and practical applications in the field of integrated quantum optics. Here we report on-chip quantum dot (QD) resonance fluorescence (RF) efficiently coupled into a single-mode waveguide, a key component of a photonic integrated circuit, with a negligible resonant laser background and show that the QD coherence is enhanced by more than a factor of 4 compared to off-resonant excitation. Single-photon behavior is confirmed under resonant excitation, and fast fluctuating charge dynamics are revealed in autocorrelation g((2)) measurements. The potential for triggered operation is verified in pulsed RF. These results pave the way to a novel class of integrated quantum-optical devices for on-chip quantum information processing with embedded resonantly driven quantum emitters.
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Affiliation(s)
- Maxim N Makhonin
- Department of Physics and Astronomy and ‡EPSRC National Centre for III-V Technologies, University of Sheffield , Sheffield S3 7RH, United Kingdom
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Magri R, Placidi E, Arciprete F, Patella F. Selective growth of InAs quantum dots on GaAs driven by as kinetics. CRYSTAL RESEARCH AND TECHNOLOGY 2014. [DOI: 10.1002/crat.201300426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- R. Magri
- Dipartimento FIM; Università di Modena e Reggio Emilia and Centro S3 CNR - Istituto di Nanoscienze; Modena Italy
| | - E. Placidi
- Dipartimento di Fisica; Università di Roma “Tor Vergata”; Roma Italy
- CNR - Istituto di Struttura della Materia; Roma Italy
| | - F. Arciprete
- Dipartimento di Fisica; Università di Roma “Tor Vergata”; Roma Italy
| | - F. Patella
- Dipartimento di Fisica; Università di Roma “Tor Vergata”; Roma Italy
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Fölsch S, Martínez-Blanco J, Yang J, Kanisawa K, Erwin SC. Quantum dots with single-atom precision. NATURE NANOTECHNOLOGY 2014; 9:505-508. [PMID: 24974937 DOI: 10.1038/nnano.2014.129] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 05/27/2014] [Indexed: 06/03/2023]
Abstract
Quantum dots are often called artificial atoms because, like real atoms, they confine electrons to quantized states with discrete energies. However, although real atoms are identical, most quantum dots comprise hundreds or thousands of atoms, with inevitable variations in size and shape and, consequently, unavoidable variability in their wavefunctions and energies. Electrostatic gates can be used to mitigate these variations by adjusting the electron energy levels, but the more ambitious goal of creating quantum dots with intrinsically digital fidelity by eliminating statistical variations in their size, shape and arrangement remains elusive. We used a scanning tunnelling microscope to create quantum dots with identical, deterministic sizes. By using the lattice of a reconstructed semiconductor surface to fix the position of each atom, we controlled the shape and location of the dots with effectively zero error. This allowed us to construct quantum dot molecules whose coupling has no intrinsic variation but could nonetheless be tuned with arbitrary precision over a wide range. Digital fidelity opens the door to quantum dot architectures free of intrinsic broadening-an important goal for technologies from nanophotonics to quantum information processing as well as for fundamental studies of confined electrons.
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Affiliation(s)
- Stefan Fölsch
- Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany
| | - Jesús Martínez-Blanco
- Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany
| | - Jianshu Yang
- Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5-7, 10117 Berlin, Germany
| | - Kiyoshi Kanisawa
- NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa, 243-0198, Japan
| | - Steven C Erwin
- Center for Computational Materials Science, Naval Research Laboratory, Washington, DC 20375, USA
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