Open quantum systems in thermal non-ergodic environments
arXiv:1910.10496 · doi:10.1103/PhysRevA.103.032204
Abstract
The dynamics of an open system crucially depends on the correlation function of its environment, . We show that for thermal non-Harmonic environments may not decay to zero but to an offset, . The presence of such offset is determined by the environment eigenstate structure, and whether it fulfills or not the eigenstate thermalization hypothesis. Moreover, we show that a could render the weak coupling approximation inaccurate and prevent the open system to thermalize. Finally, for a realistic environment of dye molecules, we show the emergence of the offset by using matrix product states (MPS), and discuss its link to a 1/f noise spectrum that, in contrast to previous models, extends to zero frequencies. Thus, our results may be relevant in describing dissipation in quantum technological devices like superconducting qubits, which are known to be affected by such noise.
arXiv comment4 pages, 1 figure, plus suplementary material
References in corpus (29)
- The density-matrix renormalization group in the age of matrix product states
- Thermalization and its mechanism for generic isolated quantum systems
- From Quantum Chaos and Eigenstate Thermalization to Statistical Mechanics and Thermodynamics
- Relaxation in a Completely Integrable Many-Body Quantum System: An Ab Initio Study of the Dynamics of the Highly Excited States of Lattice Hard-Core Bosons
- Measure for the Degree of Non-Markovian Behavior of Quantum Processes in Open Systems
- Non-Markovian dynamics in open quantum systems
- Quantum Non-Markovianity: Characterization, Quantification and Detection
- Fluctuation-Dissipation: Response Theory in Statistical Physics
- 1/f noise: implications for solid-state quantum information
- The approach to thermal equilibrium in quantized chaotic systems
- Localization from Hilbert space shattering: from theory to physical realizations
- Local constraints can globally shatter Hilbert space: a new route to quantum information protection
- Ergodicity-breaking arising from Hilbert space fragmentation in dipole-conserving Hamiltonians
- Canonical form of master equations and characterization of non-Markovianity
- Concepts of quantum non-Markovianity: a hierarchy
- Qubit noise spectroscopy for non-Gaussian dephasing environments
- Exact states and spectra of vibrationally dressed polaritons
- Dynamical suppression of 1/f noise processes in qubit systems
- Non-Gaussian noise spectroscopy with a superconducting qubit sensor
- Thermalization and breakdown of thermalization in photon condensates
- Temperature square dependence of the low frequency 1/f charge noise in the Josephson junction qubits
- Time evolution of correlation functions in quantum many-body systems
- Is charge noise in single electron transistors and charge qubits caused by metallic grains?
- Quantum decoherence reduction by increasing the thermal bath temperature
- On the Assumption of Initial Factorization in the Master Equation for Weakly Coupled Systems I: General Framework
- Stochastic resonance phenomena in spin chains
- Hidden antiunitary symmetry behind "accidental" degeneracy and its protection of degeneracy
- Effect of bath temperature on the quantum decoherence
- Dephasing dynamics of an impurity coupled to an anharmonic environment