A practical compact source of heralded single photons for a simple detection LIDAR

Mrozowski, Mateusz P. and Jeffers, John and Pritchard, Jonathan D. (2021) A practical compact source of heralded single photons for a simple detection LIDAR. Proceedings of SPIE, 11835. 1183508. ISSN 0277-786X (https://doi.org/10.1117/12.2597218)

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Abstract

Optical quantum technologies such as quantum sensing, quantum cryptography and quantum computation all utilize properties of non-classical light, such as precise photon-number and entangled photon-pair states, to surpass technologies based on the classical light. A common route for obtaining heralded single photons is spontaneous four-wave mixing in optical fibers, allowing for a well-defined spatial mode, for high efficiency integration into optical fiber networks. These fibers are typically pumped using large, commercial, pulsed lasers requiring high-power (~10 W) pump lasers and are limited to ~MHz repetition rate. Here we propose a cost- efficient, compact and mobile alternative. Photon pairs at 660 nm and 960 nm will be created using four-wave mixing in commercial birefringent optical fiber, pumped using transform limited picosecond pulses with GHz repetition rates derived from a 785 nm CW laser diode using cavity-enhanced optical frequency comb generation. The pulses are predicted to have average power of 275 mW, a peak power of >40 W, and predicted photon yield of >2000 pairs detected per second. This design will be later utilized to implement a quantum illumination scheme based on a coincidence count between idler and signal photons -- instead of joint measurement between signal and idler. This will allow for quantum advantage over classic LIDAR without the requirement for maintaining an interferometric stability in free space.

  • Item type:Article
    ID code:77488
    Dates:
    Date
    Event
    1 August 2021
    Published
    7 July 2021
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:19 Aug 2021 12:58
    Last modified:11 Apr 2024 02:16
    URI:https://strathprints.strath.ac.uk/id/eprint/77488
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