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Frequency multiplexing for quasi-deterministic heralded single-photon sources

Author
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Abstract
Parametric single-photon sources are well suited for large-scale quantum networks due to their potential for photonic integration. Active multiplexing of photons can overcome the intrinsically probabilistic nature of these sources, resulting in near-deterministic operation. However, previous implementations using spatial and temporal multiplexing scale unfavorably due to rapidly increasing switching losses. Here, we break this limitation via frequency multiplexing in which switching losses remain fixed irrespective of the number of multiplexed modes. We use low-noise optical frequency conversion for efficient frequency switching and demonstrate multiplexing of three modes. We achieve a generation rate of 4.6 x 10(4) photons per second with an ultra-low g((2))(0) = 0.07 indicating high single-photon purity. Our scalable, all-fiber multiplexing system has a total loss of just 1.3 dB, such that the 4.8 dB multiplexing enhancement markedly overcomes switching loss. Our approach offers a promising path to creating a deterministic photon source on an integrated chip-based platform.
Keywords
ENTANGLED PHOTONS, QUANTUM STATES, SOLID-STATE, CONVERSION, EFFICIENT, GENERATION, PAIRS, CHIP

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Chicago
Joshi, Chaitali, Alessandro Farsi, Stéphane Clemmen, Sven Ramelow, and Alexander L. Gaeta. 2018. “Frequency Multiplexing for Quasi-deterministic Heralded Single-photon Sources.” Nature Communications 9.
APA
Joshi, C., Farsi, A., Clemmen, S., Ramelow, S., & Gaeta, A. L. (2018). Frequency multiplexing for quasi-deterministic heralded single-photon sources. NATURE COMMUNICATIONS, 9.
Vancouver
1.
Joshi C, Farsi A, Clemmen S, Ramelow S, Gaeta AL. Frequency multiplexing for quasi-deterministic heralded single-photon sources. NATURE COMMUNICATIONS. 2018;9.
MLA
Joshi, Chaitali et al. “Frequency Multiplexing for Quasi-deterministic Heralded Single-photon Sources.” NATURE COMMUNICATIONS 9 (2018): n. pag. Print.
@article{8606830,
  abstract     = {Parametric single-photon sources are well suited for large-scale quantum networks due to their potential for photonic integration. Active multiplexing of photons can overcome the intrinsically probabilistic nature of these sources, resulting in near-deterministic operation. However, previous implementations using spatial and temporal multiplexing scale unfavorably due to rapidly increasing switching losses. Here, we break this limitation via frequency multiplexing in which switching losses remain fixed irrespective of the number of multiplexed modes. We use low-noise optical frequency conversion for efficient frequency switching and demonstrate multiplexing of three modes. We achieve a generation rate of 4.6 x 10(4) photons per second with an ultra-low g((2))(0) = 0.07 indicating high single-photon purity. Our scalable, all-fiber multiplexing system has a total loss of just 1.3 dB, such that the 4.8 dB multiplexing enhancement markedly overcomes switching loss. Our approach offers a promising path to creating a deterministic photon source on an integrated chip-based platform.},
  articleno    = {847},
  author       = {Joshi, Chaitali and Farsi, Alessandro and Clemmen, St{\'e}phane and Ramelow, Sven and Gaeta, Alexander L.},
  issn         = {2041-1723},
  journal      = {NATURE COMMUNICATIONS},
  language     = {eng},
  pages        = {8},
  title        = {Frequency multiplexing for quasi-deterministic heralded single-photon sources},
  url          = {http://dx.doi.org/10.1038/s41467-018-03254-4},
  volume       = {9},
  year         = {2018},
}

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