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Bonsma-Fisher KAG, Bustard PJ, Parry C, Wright TA, England DG, Sussman BJ, Mosley PJ. Ultratunable Quantum Frequency Conversion in Photonic Crystal Fiber. PHYSICAL REVIEW LETTERS 2022; 129:203603. [PMID: 36462023 DOI: 10.1103/physrevlett.129.203603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 10/21/2022] [Indexed: 06/17/2023]
Abstract
Quantum frequency conversion of single photons between wavelength bands is a key enabler to realizing widespread quantum networks. We demonstrate the quantum frequency conversion of a heralded 1551 nm photon to any wavelength within an ultrabroad (1226-1408 nm) range in a group-velocity-symmetric photonic crystal fiber, covering over 150 independent frequency bins. The target wavelength is controlled by tuning only a single pump laser wavelength. We find internal, and total, conversion efficiencies of 12(1)% and 1.4(2)%, respectively. For the case of converting 1551 to 1300 nm we measure a heralded g^{(2)}(0)=0.25(6) for converted light from an input with g^{(2)}(0)=0.034(8). We expect that this photonic crystal fiber can be used for myriad quantum networking tasks.
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Affiliation(s)
- K A G Bonsma-Fisher
- National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada
| | - P J Bustard
- National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada
| | - C Parry
- Centre for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
| | - T A Wright
- Centre for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
| | - D G England
- National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada
| | - B J Sussman
- National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada
- Department of Physics, University of Ottawa, Advanced Research Complex, 25 Templeton Street, Ottawa, Ontario K1N 6N5, Canada
| | - P J Mosley
- Centre for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
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Kupchak C, Erskine J, England D, Sussman B. Terahertz-bandwidth switching of heralded single photons. OPTICS LETTERS 2019; 44:1427-1430. [PMID: 30874666 DOI: 10.1364/ol.44.001427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 02/10/2019] [Indexed: 06/09/2023]
Abstract
Optically induced ultrafast switching of single photons is demonstrated by rotating the photon polarization via the Kerr effect in a commercially available single-mode fiber. A switching efficiency of 97% is achieved with a ∼1.7 ps switching time and signal-to-noise ratio of ∼800. Preservation of the single-photon properties is confirmed by measuring no significant increase in the second-order autocorrelation function g(2)(0). These values are attained with only nanojoule-level pump energies that are produced by a laser oscillator with 80 MHz repetition rate. The results highlight a simple device capable of both high-bandwidth operations and preservation of single-photon properties for applications in photonic quantum processing and ultrafast time-gating or switching.
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Wright LJ, Karpiński M, Söller C, Smith BJ. Spectral Shearing of Quantum Light Pulses by Electro-Optic Phase Modulation. PHYSICAL REVIEW LETTERS 2017; 118:023601. [PMID: 28128614 DOI: 10.1103/physrevlett.118.023601] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Indexed: 06/06/2023]
Abstract
Frequency conversion of nonclassical light enables robust encoding of quantum information based upon spectral multiplexing that is particularly well-suited to integrated-optics platforms. Here we present an intrinsically deterministic linear-optics approach to spectral shearing of quantum light pulses and show it preserves the wave-packet coherence and quantum nature of light. The technique is based upon an electro-optic Doppler shift to implement frequency shear of heralded single-photon wave packets by ±200 GHz, which can be scaled to an arbitrary shift. These results demonstrate a reconfigurable method to controlling the spectral-temporal mode structure of quantum light that could achieve unitary operation.
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Affiliation(s)
- Laura J Wright
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Michał Karpiński
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
- Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warszawa, Poland
| | - Christoph Söller
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Brian J Smith
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
- Department of Physics and Oregon Center for Optical, Molecular, and Quantum Science, University of Oregon, Eugene, Oregon 97403, USA
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Tiranov A, Strassmann PC, Lavoie J, Brunner N, Huber M, Verma VB, Nam SW, Mirin RP, Lita AE, Marsili F, Afzelius M, Bussières F, Gisin N. Temporal Multimode Storage of Entangled Photon Pairs. PHYSICAL REVIEW LETTERS 2016; 117:240506. [PMID: 28009181 DOI: 10.1103/physrevlett.117.240506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Indexed: 06/06/2023]
Abstract
Multiplexed quantum memories capable of storing and processing entangled photons are essential for the development of quantum networks. In this context, we demonstrate and certify the simultaneous storage and retrieval of two entangled photons inside a solid-state quantum memory and measure a temporal multimode capacity of ten modes. This is achieved by producing two polarization-entangled pairs from parametric down-conversion and mapping one photon of each pair onto a rare-earth-ion-doped (REID) crystal using the atomic frequency comb (AFC) protocol. We develop a concept of indirect entanglement witnesses, which can be used as Schmidt number witnesses, and we use it to experimentally certify the presence of more than one entangled pair retrieved from the quantum memory. Our work puts forward REID-AFC as a platform compatible with temporal multiplexing of several entangled photon pairs along with a new entanglement certification method, useful for the characterization of multiplexed quantum memories.
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Affiliation(s)
- Alexey Tiranov
- Groupe de Physique Appliquée, Université de Genève, CH-1211 Genève, Switzerland
| | - Peter C Strassmann
- Groupe de Physique Appliquée, Université de Genève, CH-1211 Genève, Switzerland
| | - Jonathan Lavoie
- Groupe de Physique Appliquée, Université de Genève, CH-1211 Genève, Switzerland
| | - Nicolas Brunner
- Département Physique Théorique, Université de Genève, CH-1211 Genève, Switzerland
| | - Marcus Huber
- Groupe de Physique Appliquée, Université de Genève, CH-1211 Genève, Switzerland
- Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Vienna, Austria
| | - Varun B Verma
- National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA
| | - Sae Woo Nam
- National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA
| | - Richard P Mirin
- National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA
| | - Adriana E Lita
- National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA
| | - Francesco Marsili
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, California 91109, USA
| | - Mikael Afzelius
- Groupe de Physique Appliquée, Université de Genève, CH-1211 Genève, Switzerland
| | - Félix Bussières
- Groupe de Physique Appliquée, Université de Genève, CH-1211 Genève, Switzerland
| | - Nicolas Gisin
- Groupe de Physique Appliquée, Université de Genève, CH-1211 Genève, Switzerland
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Fisher KAG, England DG, MacLean JPW, Bustard PJ, Resch KJ, Sussman BJ. Frequency and bandwidth conversion of single photons in a room-temperature diamond quantum memory. Nat Commun 2016; 7:11200. [PMID: 27045988 PMCID: PMC4822040 DOI: 10.1038/ncomms11200] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 03/02/2016] [Indexed: 11/09/2022] Open
Abstract
The spectral manipulation of photons is essential for linking components in a quantum network. Large frequency shifts are needed for conversion between optical and telecommunication frequencies, while smaller shifts are useful for frequency-multiplexing quantum systems, in the same way that wavelength division multiplexing is used in classical communications. Here we demonstrate frequency and bandwidth conversion of single photons in a room-temperature diamond quantum memory. Heralded 723.5 nm photons, with 4.1 nm bandwidth, are stored as optical phonons in the diamond via a Raman transition. Upon retrieval from the diamond memory, the spectral shape of the photons is determined by a tunable read pulse through the reverse Raman transition. We report central frequency tunability over 4.2 times the input bandwidth, and bandwidth modulation between 0.5 and 1.9 times the input bandwidth. Our results demonstrate the potential for diamond, and Raman memories in general, as an integrated platform for photon storage and spectral conversion.
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Affiliation(s)
- Kent A G Fisher
- Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1
| | - Duncan G England
- National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario, Canada K1A 0R6
| | - Jean-Philippe W MacLean
- Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1
| | - Philip J Bustard
- National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario, Canada K1A 0R6
| | - Kevin J Resch
- Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1
| | - Benjamin J Sussman
- National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario, Canada K1A 0R6.,Department of Physics, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario, Canada K1N 6N5
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Lukens JM, Odele OD, Leaird DE, Weiner AM. Electro-optic modulation for high-speed characterization of entangled photon pairs. OPTICS LETTERS 2015; 40:5331-5334. [PMID: 26565867 DOI: 10.1364/ol.40.005331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We demonstrate a new biphoton manipulation and characterization technique based on electro-optic intensity modulation and time shifting. By applying fast modulation signals with a sharply peaked cross-correlation to each photon from an entangled pair, it is possible to measure temporal correlations with significantly higher precision than that attainable using standard single-photon detection. Low-duty-cycle pulses and maximal-length sequences are considered as modulation functions, reducing the time spread in our correlation measurement by a factor of five compared to our detector jitter. With state-of-the-art electro-optic components, we expect the potential to surpass the speed of any single-photon detectors currently available.
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