Quantum metrology with Bloch Oscillations in Floquet phase space

TL;DR

This paper explores how Floquet phase space oscillations, similar to Bloch oscillations in spatial potentials, can be used for high-precision force detection, expanding quantum metrology capabilities.

Contribution

It introduces the concept of using Floquet phase space oscillations as a new platform for quantum metrology, offering greater flexibility than traditional spatial Bloch oscillations.

Findings

Floquet phase space oscillations can be exploited for force sensing.

They offer enhanced flexibility over traditional Bloch oscillations.

Applications include tachometers and magnetometers.

Abstract

Quantum particles performing Bloch oscillations in a spatially periodic potential can be used as a very accurate detector of constant forces. We find that the similar oscillations that can appear in the Floquet phase space of a quantum particle subjected a periodic temporal driving, even in the absence of periodic lattice potential, can likewise be exploited as detectors. Compared with their spatial Bloch analog, however, the Floquet-Bloch oscillations provide significant added flexibility and open the way to a broad range of precision metrology applications. We illustrate this property on the examples of a tachometer and a magnetometer.