Enhanced Parameter Estimation with Periodically Driven Quantum Probe
Abstract
We propose a quantum metrology protocol for measuring frequencies and weak forces based on a periodic modulating quantum Jahn-Teller system composed of a single spin interacting with two bosonic modes. We show that in the first order of the frequency drive the time-independent effective Hamiltonian describes spin-dependent interaction between the two bosonic modes. In the limit of high-frequency drive and low bosonic frequency the quantum Jahn-Teller system exhibits critical behaviour which can be used for high-precision quantum estimation. A major advantage of our scheme is the robustness of the system against spin decoherence which allows to perform parameter estimations with measurement time not limited by spin dephasing.
Keywords
Cite
@article{arxiv.2106.06302,
title = {Enhanced Parameter Estimation with Periodically Driven Quantum Probe},
author = {Peter A. Ivanov},
journal= {arXiv preprint arXiv:2106.06302},
year = {2021}
}
Comments
8 pages, 4 figures