Variational Quantum Simulations of Finite-Temperature Dynamical Properties via Thermofield Dynamics

Understand

The recent advancement of quantum computer hardware offers the potential to simulate quantum many-body systems beyond the capability of its classical counterparts.

• However, most current works focus on simulating the ground-state properties or pure-state quantum dynamics of quantum systems.
• Finite-temperature physics are much less explored, and existing literature mainly consider equilibrium properties.
• Here we present a variational quantum simulation protocol based on the thermofield dynamics formalism to simulate the dynamical and non-equilibrium finite-temperature properties of quantum systems with near-term quantum computers.