Ramsey interferometry of non-Hermitian quantum impurities
F. Tonielli, N. Chakraborty, F. Grusdt, J. Marino
Abstract
The authors introduce a Ramsey pulse scheme which allows to probe the Loschmidt echo of non-Hermitian Hamiltonians. They study a model of an impurity atom which is dissipatively coupled to a surrounding Bose gas and identify a many-body quantum Zeno effect in the corresponding non-Hermitian Loschmidt echo.
Topics & Concepts
PhysicsQuantum Zeno effectImpurityQuantum mechanicsQuantumAtom (system on chip)InterferometryPulse (music)Quantum decoherenceQuantum opticsAtom interferometerQuantum electrodynamicsQuantum dotAtomic physicsSpectrum (functional analysis)Quantum dynamicsQuantum sensorQuantum dissipationQuantum systemQuantum Mechanics and Non-Hermitian PhysicsCold Atom Physics and Bose-Einstein CondensatesQuantum many-body systems