Insights into driven-dissipative quantum systems using hidden time-reversal symmetries
Aashish Clerk (The University of Chicago)
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).