Artificial quantum thermal bath: Engineering temperature for a many-body quantum system

Abstract

Temperature determines the relative probability of observing a physical system in an energy state when that system is energetically in equilibrium with its environment. In this paper, we present a theory for engineering the temperature of a quantum system different from its ambient temperature. We define criteria for an engineered quantum bath that, when coupled to a quantum system with Hamiltonian $H$, drives the system to the equilibrium state $\frac{e^{-H/T}}{\mathrm{Tr}({\mathrm{e}}^{-H/T})}$ with a tunable parameter $T$. This is basically an analog counterpart of the digital quantum metropolis algorithm. For a system of superconducting qubits, we propose a circuit-QED approximate realization of such an engineered thermal bath consisting of driven lossy resonators. Our proposal opens the path to simulate thermodynamical properties of many-body quantum systems of size not accessible to classical simulations. Also we discuss how an artificial thermal bath can serve as a temperature knob for a hybrid quantum-thermal annealer.

10 pages, 3 figures, extended published version

References in corpus (12)

• Sideband Cooling Micromechanical Motion to the Quantum Ground State
• Computational complexity and fundamental limitations to fermionic quantum Monte Carlo simulations
• Beyond Strong Coupling in a Massively Multimode Cavity
• Bulk and surface loss in superconducting transmon qubits
• Cooling and Autonomous Feedback in a Bose-Hubbard chain with Attractive Interactions
• Storage and on-demand release of microwaves using superconducting resonators with tunable coupling
• Ultra-Broadband Microwave Frequency-Comb Generation in Superconducting Resonators
• Perturbation Bounds for Quantum Markov Processes and their Fixed Points
• Universal two-qubit interactions, measurement and cooling for quantum simulation and computing
• Open system quantum annealing in mean field models with exponential degeneracy
• Retrieving the ground state of spin glasses using thermal noise: Performance of quantum annealing at finite temperatures
• Quantum Heat Baths satisfying the eigenstate thermalization hypothesis

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