Quick Navigation

Overview Topics Abstract Importance Paper Tools References Reactions Discussion Publication Related

Topics

Quantum Cryptography Security Superconducting Qubits

Quantum key distribution over a 72 dB channel loss using ultralow dark count superconducting single-photon detectors

arXiv
Authors: Hiroyuki Shibata, Toshimori Honjo, Kaoru Shimizu

Year

2014

Paper ID

48254

Status

Preprint

Abstract Read

~2 min

Abstract Words

97

Citations

N/A

Abstract

We report the first Quantum key distribution (QKD) experiment over a 72 dB channel loss using superconducting nanowire single-photon detectors (SSPD, SNSPD) with the dark count rate (DCR) of 0.01 cps. The DCR of the SSPD, which is dominated by the blackbody radiation at room temperature, is blocked by introducing cold optical bandpass filter. We employ the differential phase shift QKD (DPS-QKD) scheme with a 1 GHz system clock rate. The quantum bit error rate (QBER) below 3 % is achieved when the length of the dispersion shifted fiber (DSF) is 336 km (72 dB loss), which is low enough to generate secure keys.

Why This Paper Matters

  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
  • It adds a 2014 reference point for readers tracking recent quantum research.
  • We report the first Quantum key distribution (QKD) experiment over a 72 dB channel loss using superconducting nanowire single-photon detectors (SSPD, SNSPD) with the dark count...

Paper Tools

Become a member to use research tools

Sign in to open papers, visit source links, share, cite, compare, copy DOI links, request category corrections, and build your reading list.

Become a member Sign in
Show Paper arXiv Publisher Share Cite This Paper Copy URL Compare Copy DOI Add to Reading List Category Correction Request

References & Citation Signals

[1] DOI https://doi.org/arXiv:1408.0562 [2] arXiv https://arxiv.org/abs/1408.0562 [3] Publisher https://arxiv.org/abs/1408.0562

Local Citation Graph (Related-Paper Links)

Current Paper #48254 #69031 Amplitude-dependent quantum hyd... #69022 Contacting Josephson Junctions ... #69011 Improved Cryogenic Photodiode O... #68999 Suppression of Quasiparticle Po...

External citation index: OpenAlex citation signal

Community Reactions

Quick sentiment from readers on this paper.

Score: 0
Likes: 0 Dislikes: 0

Sign in to react to this paper.

Discussion & Reviews (Moderated)

Average Rating: 0.0 / 5 (0 ratings)

No written reviews yet.