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

Autor:	Schlegel, David S., Kehrein, Stefan
Rok vydání:	2023
Předmět:	Quantum Physics
Druh dokumentu:	Working Paper
Popis:	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. Comment: 11 pages, 7 figures, v2
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2312.17672 Zobrazit plný text záznamu View this record from Arxiv