Entangled light enhances force sensing

Article Optics

Entanglement-enhanced optomechanical sensing

Yi Xia et al.

Summary: Joint force measurements with entangled optical probes on multiple optomechanical sensors can improve the bandwidth in the thermal-noise-dominant regime or the sensitivity in the shot-noise-dominant regime. The overall performance of entangled probes is quantified with a 25% increase compared to classical probes. This entanglement-enhanced optomechanical sensing has potential applications in inertial navigation, acoustic imaging, and searches for new physics.

NATURE PHOTONICS (2023)

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Article Optics

Distributed quantum phase estimation with entangled photons

Li-Zheng Liu et al.

Summary: This research demonstrates the use of discrete variables in distributed quantum phase estimation, achieving improved phase measurement accuracy through parallel mode entanglement and multiple passes of a phase shifter.

NATURE PHOTONICS (2021)

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Article Multidisciplinary Sciences

A quantum enhanced search for dark matter axions

K. M. Backes et al.

Summary: The study uses vacuum squeezing technology to overcome the quantum noise limit and did not find evidence of dark matter axions within a specific mass range, demonstrating the potential of noise reduction techniques in fundamental physics searches.

NATURE (2021)

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Article Physics, Multidisciplinary