Quantum non-demolition measurements of moving target states
Quantum Physics
2022-10-05 v2
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.
Keywords
Cite
@article{arxiv.2201.03918,
title = {Quantum non-demolition measurements of moving target states},
author = {A. L. Andersen and K. Mølmer},
journal= {arXiv preprint arXiv:2201.03918},
year = {2022}
}
Comments
6 pages, 5 figures