Algorithmic Cooling of a Quantum Simulator

TL;DR

This paper introduces a novel method for preparing ground states in quantum simulators through simulated dissipation, offering an alternative to adiabatic techniques and enhancing the efficiency of quantum system initialization.

Contribution

It proposes a new cooling approach for quantum simulators using simulated dissipation, expanding the toolkit for ground state preparation beyond adiabatic methods.

Findings

Demonstrates feasibility of cooling via simulated dissipation

Provides a framework analogous to quantum annealing

Potentially improves ground state preparation efficiency

Abstract

Controlled quantum mechanical devices provide a means of simulating more complex quantum systems exponentially faster than classical computers. Such "quantum simulators" rely heavily upon being able to prepare the ground state of Hamiltonians, whose properties can be used to calculate correlation functions or even the solution to certain classical computations. While adiabatic preparation remains the primary means of producing such ground states, here we provide a different avenue of preparation: cooling to the ground state via simulated dissipation. This is in direct analogy to contemporary efforts to realize generalized forms of simulated annealing in quantum systems.