---
res:
  bibo_abstract:
  - <jats:p>Superconducting nanowire single-photon detectors (SNSPDs) have been widely
    used to study the discrete nature of quantum states of light in the form of photon-counting
    experiments. We show that SNSPDs can also be used to study continuous variables
    of optical quantum states by performing homodyne detection at a bandwidth of 400 kHz.
    By measuring the interference of a continuous-wave field of a local oscillator
    with the field of the vacuum state using two SNSPDs, we show that the variance
    of the difference in count rates is linearly proportional to the photon flux of
    the local oscillator over almost five orders of magnitude. The resulting shot-noise
    clearance of (46.0 ± 1.1) dB is the highest reported clearance for a balanced
    optical homodyne detector, demonstrating their potential for measuring highly
    squeezed states in the continuous-wave regime. In addition, we measured a CMRR = 22.4
    dB. From the joint click counting statistics, we also measure the phase-dependent
    quadrature of a weak coherent state to demonstrate our device’s functionality
    as a homodyne detector.</jats:p>@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Maximilian
      foaf_name: Protte, Maximilian
      foaf_surname: Protte
      foaf_workInfoHomepage: http://www.librecat.org/personId=46170
  - foaf_Person:
      foaf_givenName: Timon
      foaf_name: Schapeler, Timon
      foaf_surname: Schapeler
      foaf_workInfoHomepage: http://www.librecat.org/personId=55629
    orcid: 0000-0001-7652-1716
  - foaf_Person:
      foaf_givenName: Jan
      foaf_name: Sperling, Jan
      foaf_surname: Sperling
      foaf_workInfoHomepage: http://www.librecat.org/personId=75127
    orcid: 0000-0002-5844-3205
  - foaf_Person:
      foaf_givenName: Tim
      foaf_name: Bartley, Tim
      foaf_surname: Bartley
      foaf_workInfoHomepage: http://www.librecat.org/personId=49683
  bibo_doi: 10.1364/opticaq.502201
  bibo_issue: '1'
  bibo_volume: 2
  dct_date: 2024^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/2837-6714
  dct_language: eng
  dct_publisher: Optica Publishing Group@
  dct_title: Low-noise balanced homodyne detection with superconducting nanowire single-photon
    detectors@
...