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Trapped Ion Quantum Computing Superconducting Qubits

Reducing g(2)(0) of a parametric down-conversion source via photon-number resolution with superconducting nanowire detectors

arXiv
Authors: S. Sempere-Llagostera, G. S. Thekkadath, R. B. Patel, W. S. Kolthammer, I. A. Walmsley

Year

2021

Paper ID

41141

Status

Preprint

Abstract Read

~2 min

Abstract Words

93

Citations

N/A

Abstract

Multiphoton contributions pose a significant challenge for the realisation of heralded single-photon sources (HSPS) based on nonlinear processes. In this work, we improve the quality of single photons generated in this way by harnessing the photon-number resolving (PNR) capabilities of commercial superconducting nanowire single-photon detectors (SNSPDs). We report a 13 pm 0.4 \% reduction in the intensity correlation function g(2)(0) even with a collection efficiency in the photon source of only 29.6\%. Our work demonstrates the first application of the PNR capabilities of SNSPDs and shows improvement in the quality of an HSPS with widely available technology.

Why This Paper Matters

  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
  • It adds a 2021 reference point for readers tracking recent quantum research.
  • Multiphoton contributions pose a significant challenge for the realisation of heralded single-photon sources (HSPS) based on nonlinear processes.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2111.15308 [2] arXiv https://arxiv.org/abs/2111.15308 [3] Publisher https://arxiv.org/abs/2111.15308

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