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Updated: Jun 15, 2025

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Quantum Enhanced Balanced Heterodyne Readout for Differential Interferometry

Daniel W Gould1, Vaishali B Adya2, Sheon S Y Chua1

  • 1OzGrav, Centre for Gravitational Astrophysics, Research School of Physics and Research School of Astronomy and Astrophysics, <a href="https://ror.org/019wvm592">Australian National University</a>, Australian Capital Territory, Australia.

Physical Review Letters
|August 23, 2024
PubMed
Summary

Quantum-enhanced heterodyne readout circumvents the 3 dB signal-to-noise penalty. Using entangled squeezed states improves readout sensitivity for high-precision quantum measurements and communication.

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