Sensing of quantum nonlinear noise correlations via thermodynamic variables

• URL: http://arxiv.org/abs/2310.10081v1
• Date: Mon, 16 Oct 2023 05:22:11 GMT
• Title: Sensing of quantum nonlinear noise correlations via thermodynamic variables
• Authors: Nilakantha Meher, Tom\'a\v{s} Opatrn\'y, Gershon Kurizki
• Abstract summary: We put forth the concept of quantum noise sensors based on nonlinear two-mode interferometers coupled to mechanical oscillators. Simple, autonomous machines are capable of a hitherto unexplored quantum thermodynamic functionality.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We put forth the concept of quantum noise sensors based on nonlinear two-mode interferometers coupled to mechanical oscillators. These simple, autonomous machines are capable of a hitherto unexplored quantum thermodynamic functionality: the ability to sense quantum nonlinear correlations of noisy fields via the thermodynamic variable of extractable work. The machines filter thermal noise input and turn it into quantum correlated output. Such nonlinear correlations arise in feasible experimental setups involving Rydberg polaritons coupled via dipole-dipole interactions or cavity modes that exchange quanta via their coupling to multi-level atoms. By monitoring a mechanical oscillator coupled to the interferometer, one can sense the work capacity of one of the interferometer output modes and thereby reveal its quantum nonlinear correlations. The proposed quantum sensing method can provide a much simpler alternative to quantum multiport interferometry supplemented by process tomography.

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