Related papers: Quantum non-demolition measurements of moving target states

Quantum non-demolition measurements of moving target states

URL: http://arxiv.org/abs/2201.03918v2
Date: Tue, 18 Jan 2022 10:57:43 GMT
Title: Quantum non-demolition measurements of moving target states
Authors: A. L. Andersen, K. M{\o}lmer
Abstract summary: We present a protocol for probing the state of a quantum system by its resonant coupling and entanglement with a meter system. We infer the evolution of the entangled systems and, ultimately, the state and dynamics of the system of interest.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: We present a protocol for probing the state of a quantum system by its resonant coupling and entanglement with a meter system. By continuous measurement of a time evolving meter observable, we infer the evolution of the entangled systems and, ultimately, the state and dynamics of the system of interest. The photon number in a cavity field is thus resolved by simulated monitoring of the time dependent excited state population of a resonantly coupled two-level system, and we propose to regard this as an extension of quantum non-demolition measurements with potential applications in quantum metrology and quantum computing.

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