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Abstract |
Many-body quantum systems subject to both driving and dissipation are ubiquitous in physics, and often possess complex
steady states that do not have a simple thermal-equilibrium form. I’ll discuss how a subtle kind of quantum detailed
balance (what we call “hidden time-reversal symmetry”) can yield exact insights into a range of different driven-dissipative
quantum systems, including many-body systems relevant to a variety of experimental platforms. These solutions directly
enable understanding of a variety of interesting phenomena, ranging from the practical (e.g. new methods for stabilizing
remote many-qubit entanglement for modular quantum computing), to the more fundamental (e.g. exact descriptions of
unusual driven-dissipative phase transitions). I’ll discuss how the method applies to a range of different physical systems,
including a driven Bose-Hubbard model, a driven transverse field Ising model (relevant to recent cold atom experiments on
superradiant phase transitions), and a coherently-driven interacting XXZ spin chain (something well suited to experiments
using superconducting qubits).
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