Superconducting Quantum Simulation for Many-Body Physics beyond Equilibrium

TL;DR

This paper reviews recent advances in superconducting quantum simulation, highlighting experimental progress in exploring nonequilibrium phenomena in many-body systems, and discusses future prospects for solving complex open problems.

Contribution

It provides a comprehensive overview of superconducting quantum simulation techniques and recent experimental achievements in nonequilibrium many-body physics.

Findings

Experimental demonstrations of many-body localization

Observation of quantum many-body scars

Realization of discrete time crystals

Abstract

Quantum computing is an exciting field that uses quantum principles, such as quantum superposition and entanglement, to tackle complex computational problems. Superconducting quantum circuits, based on Josephson junctions, is one of the most promising physical realizations to achieve the long-term goal of building fault-tolerant quantum computers. The past decade has witnessed the rapid development of this field, where many intermediate-scale multi-qubit experiments emergedtosimulatenonequilibriumquantummany-bodydynamicsthatarechallenging for classical computers. Here, we review the basic concepts of superconducting quantum simulation and their recent experimental progress in exploring exotic nonequilibrium quantum phenomena emerging in strongly interacting many-body systems, e.g., many-body localization, quantum many body scars, and discrete time crystals. We further discuss the prospects of quantum simulation experiments to truly solve open problems in nonequilibrium many-body systems.