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Superconducting Qubits Photonic Quantum Computing Spin Qubits Silicon Quantum Computing

NbN superconducting nanowire single photon detector with efficiency over 90% at 1550 nm wavelength operational at compact cryocooler temperature

arXiv
Authors: W. J. Zhang, L. X. You, H. Li, J. Huang, C. L. Lv, L. Zhang, X. Y. Liu, J. J. Wu, Z. Wang, X. M. Xie

Year

2016

Paper ID

43837

Status

Preprint

Abstract Read

~2 min

Abstract Words

94

Citations

N/A

Abstract

The fast development of superconducting nanowire single photon detector (SNSPD) in the past decade has enabled many advances in quantum information technology. The best system detection efficiency (SDE) record at 1550 nm wavelength was 93% obtained from SNSPD made of amorphous WSi which usually operated at sub-kelvin temperatures. We first demonstrate SNSPD made of polycrystalline NbN with SDE of 90.2% for 1550 nm wavelength at 2.1K, accessible with a compact cryocooler. The SDE saturated to 92.1% when the temperature was lowered to 1.8K. The results lighten the practical and high performance SNSPD to quantum information and other high-end applications.

Why This Paper Matters

  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
  • It adds a 2016 reference point for readers tracking recent quantum research.
  • The fast development of superconducting nanowire single photon detector (SNSPD) in the past decade has enabled many advances in quantum information technology.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1609.00429 [2] arXiv https://arxiv.org/abs/1609.00429 [3] Publisher https://arxiv.org/abs/1609.00429

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