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New pub­lic­a­tion from Max­imili­an Protte und Ti­mon Schapel­er

08.01.2024

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Have you ever thought of using superconducting single-photon detectors for homodyne detection? In our newest publication we show how we used superconducting nanowire single-photon detectors (SNSPDs) to study the continuous variables of optical quantum states using homodyne detection. From the joint click statistics of two SNSPDs we measured the phase-dependent quadrature of a weak coherent state, which was interfered with a continuous wave local oscillator in our setup. Due to the unmatched signal-to-noise ratio of SNSPDs, we additionally report the highest shot-noise clearance for a balanced optical homodyne detector.

The paper is available at:

https://doi.org/10.1364/OPTICAQ.502201

 

 

Phase-dependent nonlinear quadrature operator for the vacuum state and a weak coherent state [https://doi.org/10.1364/OPTICAQ.502201].
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Dr. Maximilian Protte

Mesoscopic Quantum Optics

Integrated weak-field homodyne detection with superconducting single-photon detectors

Write email +49 5251 60-7124
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Timon Schapeler

Mesoscopic Quantum Optics

Quantum detector tomography of single-photon detectors

Write email +49 5251 60-7120
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Mesoscopic Quantum Optics

Warburger Str. 100
33098 Paderborn
Germany

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