English

Enhanced Parameter Estimation with Periodically Driven Quantum Probe

Quantum Physics 2021-11-03 v1

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

R2 v1 2026-06-24T03:05:45.637Z