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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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On-chip coherent detection with quantum limited sensitivity.

Vadim Kovalyuk^1,2, Simone Ferrari^2,3, Oliver Kahl^2,3

¹Department of Physics, Moscow State Pedagogical University, Moscow, 119992, Russia.

Scientific Reports

|July 8, 2017

Summary

This summary is machine-generated.

This study introduces waveguide-integrated superconducting single-photon detectors for on-chip coherent detection. The novel nanophotonic device achieves high detection efficiency and exceptional spectral resolution for infrared spectroscopy.

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Area of Science:

Optics and Photonics
Quantum Technologies
Spectroscopy

Background:

Single photon detectors offer high sensitivity but typically lose spectral information post-detection.
Recovering photon frequency is crucial for low signal infrared spectroscopy applications.

Purpose of the Study:

To demonstrate on-chip coherent detection using waveguide-integrated superconducting single-photon detectors.
To achieve simultaneous single-photon counting and high spectral resolution in a single nanophotonic device.

Main Methods:

Utilized highly efficient waveguide-integrated superconducting single-photon detectors.
Implemented heterodyne coherent detection by mixing a local oscillator with the single photon signal field.
Optimized nanowire geometry and detection parameters for quantum-limited sensitivity.

Main Results:

Achieved up to 86% on-chip detection efficiency for single-photon counting.
Demonstrated heterodyne coherent detection with spectral resolution exceeding 10^11.
Observed frequency modulation with femto-Watt range local oscillator power.

Conclusions:

The developed nanophotonic device enables simultaneous single-photon counting and high spectral resolution.
This approach facilitates the realization of matrix-integrated heterodyne nanophotonic devices for C-band applications.
The technology is suitable for both classical and quantum optics requiring precise spectral information at the single-photon level.