Proceedings Article10.1109/URSIGASS.2014.6929468
High performance superconductor single photon detector with enhanced system efficiency at infrared wavelength
Labao Zhang,Tao Jia,Min Gu,Lin Kang,Guanghao Zhu,Jian Chen,Peiheng Wu +6 more
- 20 Oct 2014
- pp 1-4
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TL;DR: In this paper, a superconductor single photon detector (SSPD) with high system efficiency and low dark count rate at infrared wavelengths is presented, achieving a system efficiency of 60% at 1550 nm with a light count rate of 100 cps.
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Abstract: Single photon detection technology is a frontier in the field of photon detection. As a newly developed technique, superconductor single photon detector (SSPD) has many attractive advantages such as wide response bandwidth, low noise, and fast speed. In this paper, we experimentally demonstrate a high performance SSPD with large system efficiency and low dark count rate at infrared wavelengths. The devices structure, fabrication process and system performance are presented in details. For our SSPD, we achieve a system efficiency of 60% at 1550 nm with a dark count rate of 100 cps. The time jitter and the maximum repetition rate are also measured to be 46 ps and 50 MHz respectively.
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Citations
Improved photon counting efficiency calibration using superconducting single photon detectors
Haiyong Gan,Nan Xu,Jianwei Li,Ruoduan Sun,Feng Guojin,Yanfei Wang,Chong Ma,Lin Yandong,Labao Zhang,Lin Kang,Jian Chen,Peiheng Wu +11 more
- 15 Oct 2015
TL;DR: In this article, a superconducting nanowire single photon detector with advantages such as high photon counting speed (<20 MHz), low dark count rate (<50 counts per second), and wideband responsivity (UV to near infrared) is used as the trigger detector, enabling correlated photons calibration capabilities into shortwave visible range.
4
A practical method for determining the dead time in a single-photon avalanche diode with a weak laser beam
Mahdi Rahmanpour,Alireza Erfanian,Ahmad Afifi,Mahdi Khaje,Mohammadhossein Fahimifar +4 more
- 23 Oct 2023
TL;DR: A practical method for determining dead time in a single-photon avalanche diode with a weak laser beam determines the dead time of a single photon detector using a weak laser beam and an FPGA chip.
3
Reduction of afterpulse and dark count effects on SPAD detectors using processing methods
Alireza Erfanian,Ahmad Afifi,Mahdi Rahmanpour,Mohammadhossein Fahimifar,Mahdi Khaje +4 more
TL;DR: Noise reduction method for SPAD detectors based on pulse timing and detection algorithm. This method effectively removes noise pulses while preserving photon pulses.
2
Implementable methods for characterizing single photon avalanche diode parameters
Mahdi Rahmanpour,Alireza Erfanian,Ahmad Afifi,Mahdi Khaje,Mohammadhossein Fahimifar +4 more
1
A new quantum key distribution protocol to reduce afterpulse and dark counts effects
Mahdi Rahmanpour,Alireza Erfanian,Ahmad Afifi,Mahdi Khaje,Mohammad Hossein Fahimifar +4 more
TL;DR: A new quantum key distribution protocol to reduce afterpulse and dark counts effects in QKD avalanche detectors.
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TL;DR: In this article, a supercurrent-assisted hotspot-formation mechanism for ultrafast detection and counting of visible and infrared photons is presented, where a photon-induced hotspot leads to a temporary formation of a resistive barrier across the superconducting sensor strip and results in an easily measurable voltage pulse.
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Nanowire single-photon detector with an integrated optical cavity and anti-reflection coating
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TL;DR: Superconducting single-photon detectors are fabricated and tested and demonstrated detection efficiencies of 57% at 1550-nm wavelength and 67% at 1064 nm, creating an integrated nanoelectrophotonic device with enhanced performance relative to the original device.
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Efficient quantum computing using coherent photon conversion
Nathan K. Langford,Sven Ramelow,Sven Ramelow,Robert Prevedel,Robert Prevedel,William J. Munro,William J. Munro,Gerard J. Milburn,Gerard J. Milburn,Anton Zeilinger,Anton Zeilinger +10 more
TL;DR: In this article, a deterministic process called coherent photon conversion (CPC) was proposed to generate and process complex, multiquanta states for photonic quantum information applications, which is not restricted to optical systems, and could also function in optomechanical, electromechanical and superconducting systems that exhibit even stronger intrinsic nonlinearities.
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Efficient quantum computing using coherent photon conversion
Nathan K. Langford,Sven Ramelow,Robert Prevedel,William J. Munro,Gerard J. Milburn,Anton Zeilinger +5 more
TL;DR: A deterministic process—coherent photon conversion (CPC)— is introduced that provides a new way to generate and process complex, multiquanta states for photonic quantum information applications and is not restricted to optical systems but could also be implemented in optomechanical, electromechanical and superconducting systems with extremely strong intrinsic nonlinearities.
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Detection of infrared photons with a superconductor
TL;DR: A superconductor single photon detector based on NbN nanowire was fabricated using electron beam lithography (EBL) and reactive ion etching (RIE) for infrared photon detection.
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