Quantum non-equilibrium dynamics of Rydberg gases in the presence of dephasing noise of different strengths
arXiv:1602.01314 · doi:10.1088/0953-4075/49/18/184003
Abstract
In the presence of strong dephasing noise the dynamics of Rydberg gases becomes effectively classical, due to the rapid decay of quantum superpositions between atomic levels. Recently a great deal of attention has been devoted to the stochastic dynamics that emerges in that limit, revealing several interesting features, including kinetically-constrained glassy behaviour, self-similarity and aggregation effects. However, the non-equilibrium physics of these systems, in particular in the regime where coherent and dissipative processes contribute on equal footing, is yet far from being understood. To explore this we study the dynamics of a small one-dimensional Rydberg lattice gas subject to dephasing noise by numerically integrating the quantum Master equation. We interpolate between the coherent and the strongly dephased regime by defining a generalised concept of a blockade length. We find indications that the main features observed in the strongly dissipative limit persist when the dissipation is not strong enough to annihilate quantum coherences at the dynamically relevant time scales. These features include the existence of a time-dependent Rydberg blockade radius, and a growth of the density of excitations which is compatible with the power-law behaviour expected in the classical limit.
15 pages, 6 figures
References in corpus (21)
- Many-Body Physics with Ultracold Gases
- Quantum States and Phases in Driven Open Quantum Systems with Cold Atoms
- Realizing quantum Ising models in tunable two-dimensional arrays of single Rydberg atoms
- Observation of mesoscopic crystalline structures in a two-dimensional Rydberg gas
- Dynamical crystallization in a low-dimensional Rydberg gas
- Quantum critical behavior in strongly interacting Rydberg gases
- Non-equilibrium dynamics of bosonic atoms in optical lattices: Decoherence of many-body states due to spontaneous emission
- Universal non-equilibrium properties of dissipative Rydberg gases
- Nonequilibrium many-body steady states via Keldysh formalism
- Strongly correlated growth of Rydberg aggregates in a vapor cell
- Two-Stage Melting in Systems of Strongly Interacting Rydberg Atoms
- Steady-state crystallization of Rydberg excitations in an optically driven lattice gas
- Absorbing state phase transition with competing quantum and classical fluctuations
- Experimental observation of controllable kinetic constraints in a cold atomic gas
- Driven-dissipative dynamics of a strongly interacting Rydberg gas
- Stimulated adiabatic passage in a dissipative Rydberg superatom
- Thermalization in a coherently driven ensemble of two-level systems
- From classical to quantum non-equilibrium dynamics of Rydberg excitations in optical lattices
- Self-similar non-equilibrium dynamics of a many-body system with power-law interactions
- Crystalline structures and frustration in a two-component Rydberg gas
- Atomic loss and gain as a resource for non-equilibrium phase transitions in optical lattices
Cited by in corpus (6)
- Long-range interacting quantum systems
- Enhanced metrology at the critical point of a many-body Rydberg atomic system
- Classical Stochastic Discrete Time Crystals
- Ergodicity breaking from Rydberg clusters in a driven-dissipative many-body system
- Non-equilibrium fluctuations and metastability arising from non-additive interactions in dissipative multi-component Rydberg gases
- Revealing emergent many-body phenomena by analyzing large-scale space-time records of monitored quantum systems