Detecting single infrared photons with 93% system efficiency
Francesco Marsili,Varun B. Verma,Jeffrey A. Stern,Sean D. Harrington,Adriana E. Lita,Thomas Gerrits,Igor Vayshenker,Burm Baek,M. D. Shaw,Richard P. Mirin,Sae Woo Nam +10 more
TLDR
In this article, a fiber-coupled single-photon detection system using amorphous tungsten silicide superconducting nanowire detectors was developed, and the system detection efficiency was higher than 90% in the wavelength range between 1520 nm and 1610 nm.Abstract:
Researchers develop a fiber-coupled single-photon-detection system using amorphous tungsten silicide superconducting nanowire single-photon detectors. The system detection efficiency is higher than 90% in the wavelength range between 1520 nm and 1610 nm. The device dark-count rate, timing jitter and reset time are 1 cps, 150 ps and 40 ns, respectively.read more
Citations
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Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States
Laura Serino,Jano Gil-Lopez,M. Stefszky,Raimund Ricken,Christof Eigner,Benjamin Brecht,Christine Silberhorn +6 more
TL;DR: In this paper , a multi-output quantum pulse gate (mQPG) was proposed for high-dimensional decoding of temporal modes (TMs) of single photons with an average fidelity of 0.96 ± 0.02, characterized via measurement tomography.
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Superconducting nanowire single-photon detector made of ultrathin γ-Nb4N3 film for mid-infrared wavelengths
Yiming Pan,Yiming Pan,Hui Zhou,Hui Zhou,Lu Zhang,Lu Zhang,Hao Li,Hao Li,Yan Tang,Yan Tang,Huiqin Yu,Huiqin Yu,Mengting Si,Mengting Si,Lixing You,Lixing You,Zhen Wang,Zhen Wang +17 more
TL;DR: In this paper, the authors demonstrate the potential of NbN-SNSPDs for use in MIR applications and show that the dependence of the normalized detection efficiency on the bias current indicated a clear trend toward a saturated plateau for wavelengths up to 2145 nm.
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Generation of optical Fock and W states with single-atom-based bright quantum scissors
TL;DR: In this article, the effect of single-photon Raman interaction is exploited to truncate an arbitrary input quantum state to have at least a certain number of photons in order to generate Fock-state optical pulses.
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Coupled Tamm plasmon polaritons induced narrow bandpass filter with ultra-wide stopband
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Performing private database queries in a real-world environment using a quantum protocol
TL;DR: In this paper, a fault-tolerant private query protocol based on 1-out-of-N oblivious transfer is proposed, in which the novel error correction procedure is integral to the security of the protocol.
References
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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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Quantum Communication
Nicolas Gisin,Rob Thew +1 more
TL;DR: The current state of research and future directions in quantum key distribution and quantum networks are reviewed in this paper, with a special emphasis on quantum key distributions and quantum key sharing in quantum networks.
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Invited review article: Single-photon sources and detectors
TL;DR: The current status of single-photon-source and single-Photon-detector technologies operating at wavelengths from the ultraviolet to the infrared are reviewed and applications of these technologies to quantum communication are discussed.