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Open Quantum Systems Decoherence

Measurement-induced Clock in a Lattice Ring of Non-interacting Electrons

arXiv
Authors: David S. Schlegel, Stefan Kehrein

Year

2023

Paper ID

52956

Status

Preprint

Abstract Read

~2 min

Abstract Words

84

Citations

N/A

Abstract

We examine the emergence of periodicity in a non-interacting steady-state quantum system without external drive inspired by quantum time crystals' spontaneous time-translation symmetry breaking. Specifically, we consider a lattice ring of non-interacting electrons undergoing weak local position measurements. Our analysis uncovers time-periodic structures in steady-state two-time correlation functions, with periodicity linked to the system's group velocity. This study demonstrates a measurement-induced clock mechanism, highlighting periodic behaviors in two-time correlators of a non-equilibrium steady state, contributing to understanding time-periodic phenomena in minimally interactive quantum systems.

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  • We examine the emergence of periodicity in a non-interacting steady-state quantum system without external drive inspired by quantum time crystals' spontaneous time-translation...

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