scholarly journals A low-noise single-photon detector for long-distance free-space quantum communication

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Elena Anisimova ◽  
Dmitri Nikulov ◽  
Simeng Simone Hu ◽  
Mark Bourgon ◽  
Sebastian Philipp Neumann ◽  
...  
Keyword(s):  
Free Space ◽  
Quantum Communication ◽  
Detection Efficiency ◽  
Single Photon ◽  
Avalanche Photodiode ◽  
Low Noise ◽  
Photon Detector ◽  
Single Photon Detector ◽  
Long Distance ◽  
Communication Links

AbstractWe build and test a single-photon detector based on a Si avalanche photodiode Excelitas 30902SH thermoelectrically cooled to −100∘C. Our detector has dark count rate below 1 Hz, $500\ \mu\mathrm{m}$ 500 μ m diameter photosensitive area, photon detection efficiency around 50%, afterpulsing less than 0.35%, and timing jitter under 1 ns. These characteristics make it suitable for long-distance free-space quantum communication links, which we briefly discuss. We also report an improved method that we call long-time afterpulsing analysis, used to determine and visualise long trap lifetimes at different temperatures.

scholarly journals Ultra-low noise single-photon detector based on Si avalanche photodiode

2011 ◽  
Vol 82 (9) ◽  
pp. 093110 ◽  
Author(s):  
Yong-Su Kim ◽  
Youn-Chang Jeong ◽  
Sebastien Sauge ◽  
Vadim Makarov ◽  
Yoon-Ho Kim
Keyword(s):  
Single Photon ◽  
Avalanche Photodiode ◽  
Low Noise ◽  
Photon Detector ◽  
Single Photon Detector ◽  
Ultra Low Noise

scholarly journals Automated Characterization of Single-Photon Avalanche Photodiode

2012 ◽  
Vol 12 (5) ◽  
Author(s):  
Aina Mardhiyah M. Ghazali ◽  
Audun Nystad Bugge ◽  
Sebastien Sauge ◽  
Vadim Makarov
Keyword(s):  
Detection Efficiency ◽  
Single Photon ◽  
Photon Counting ◽  
Avalanche Photodiode ◽  
Dark Count ◽  
Photon Detector ◽  
Single Photon Detector ◽  
Photon Detection ◽  
Photon Detection Efficiency

We report an automated characterization of a single-photon detector based on commercial silicon avalanche photodiode (PerkinElmer C30902SH). The photodiode is characterized by I-V curves at different illumination levels (darkness, 10 pW and 10 µW), dark count rate and photon detection efficiency at different bias voltages. The automated characterization routine is implemented in C++ running on a Linux computer. ABSTRAK: Kami melaporkan pencirian pengesan foton tunggal secara automatik berdasarkan kepada diod foto runtuhan silikon (silicon avalanche photodiode) (PerkinElmer C30902SH) komersial. Pencirian  diod foto adalah berdasarkan kepada plot arus-voltan (I-V) pada tahap pencahayaan yang berbeza (kelam - tanpa cahaya, 10pW, dan 10µW), kadar bacaan latar belakang, kecekapan pengesanan foton pada voltan picuan yang berbeza. Pengaturcaraan C++ digunakan di dalam rutin pencirian automatik melalui komputer dengan sistem pengendalian LINUX.KEYWORDS: avalanche photodiode (APD); single photon detector; photon counting; experiment automation

scholarly journals Observing quantum coherence from photons scattered in free-space

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Shihan Sajeed ◽  
Thomas Jennewein
Keyword(s):  
Free Space ◽  
Quantum Coherence ◽  
Quantum Communication ◽  
Single Photon ◽  
Detector Array ◽  
Line Of Sight ◽  
Background Suppression ◽  
Single Photon Detector ◽  
High Background ◽  
Non Line Of Sight

AbstractQuantum 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.

scholarly journals Low-filling-factor superconducting single photon detector with high system detection efficiency

2013 ◽  
Vol 21 (22) ◽  
pp. 27177 ◽  
Author(s):  
Taro Yamashita ◽  
Shigehito Miki ◽  
Hirotaka Terai ◽  
Zhen Wang
Keyword(s):  
Filling Factor ◽  
Detection Efficiency ◽  
Single Photon ◽  
Photon Detector ◽  
Single Photon Detector ◽  
High System

A low-noise time-gated single-photon detector in a HV-CMOS technology for triggered imaging

2013 ◽  
Vol 201 ◽  
pp. 342-351 ◽  
Author(s):  
E. Vilella ◽  
O. Alonso ◽  
A. Montiel ◽  
A. Vilà ◽  
A. Diéguez
Keyword(s):  
Single Photon ◽  
Cmos Technology ◽  
Low Noise ◽  
Photon Detector ◽  
Single Photon Detector
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