Many-body synchronization of interacting qubits by engineered ac-driving

TL;DR

This paper introduces a method to control many-body localization and ergodicity in interacting qubits using engineered ac-driving, enabling dynamic switching without detailed disorder knowledge.

Contribution

The study presents a novel technique employing phase-altered $\pi$-pulses to suppress MBL and induce ergodic behavior in many-body qubit systems.

Findings

Loschmidt echo shows transition from power-law to rapid decay

Technique effectively suppresses disorder without microscopic details

Enables dynamic control of many-body phases

Abstract

In this work we introduce the many-body synchronization of an interacting qubit ensemble which allows one to switch dynamically from many-body-localized (MBL) to an ergodic state. We show that applying of $\pi$-pulses with altering phases, one can effectively suppress the MBL phase and, hence, eliminate qubits disorder. The findings are based on the analysis of the Loschmidt echo dynamics which shows a transition from a power-law decay to more rapid one indicating the dynamical MBL-to-ergodic transition. The technique does not require to know the microscopic details of the disorder.