All Outputs (16)

Many-Body Radiative Decay in Strongly Interacting Rydberg Ensembles (2022)
Journal Article
Nill, C., Brandner, K., Olmos, B., Carollo, F., & Lesanovsky, I. (2022). Many-Body Radiative Decay in Strongly Interacting Rydberg Ensembles. Physical Review Letters, 129(24), https://doi.org/10.1103/physrevlett.129.243202

When atoms are excited to high-lying Rydberg states they interact strongly with dipolar forces. The resulting state-dependent level shifts allow to study many-body systems displaying intriguing nonequilibrium phenomena, such as constrained spin syste... Read More about Many-Body Radiative Decay in Strongly Interacting Rydberg Ensembles.

Emergent quantum correlations and collective behavior in noninteracting quantum systems subject to stochastic resetting (2022)
Journal Article
Magoni, M., Carollo, F., Perfetto, G., & Lesanovsky, I. (2022). Emergent quantum correlations and collective behavior in noninteracting quantum systems subject to stochastic resetting. Physical Review A, 106(5), Article 052210. https://doi.org/10.1103/physreva.106.052210

We investigate the dynamics of a noninteracting spin system, undergoing coherent Rabi oscillations, in the presence of stochastic resetting. We show that resetting generally induces long-range quantum and classical correlations both in the emergent d... Read More about Emergent quantum correlations and collective behavior in noninteracting quantum systems subject to stochastic resetting.

Thermodynamics of quantum-jump trajectories of open quantum systems subject to stochastic resetting (2022)
Journal Article
Perfetto, G., Carollo, F., & Lesanovsky, I. (2022). Thermodynamics of quantum-jump trajectories of open quantum systems subject to stochastic resetting. SciPost Physics, 13(4), Article 079. https://doi.org/10.21468/SciPostPhys.13.4.079

We consider Markovian open quantum systems subject to stochastic resetting, which means that the dissipative time evolution is reset at randomly distributed times to the initial state. We show that the ensuing dynamics is non-Markovian and has the fo... Read More about Thermodynamics of quantum-jump trajectories of open quantum systems subject to stochastic resetting.

Anderson and many-body localization in the presence of spatially correlated classical noise (2022)
Journal Article
Marcantoni, S., Carollo, F., Gambetta, F. M., Lesanovsky, I., Schneider, U., & Garrahan, J. P. (2022). Anderson and many-body localization in the presence of spatially correlated classical noise. Physical Review B, 106(13), Article 134211. https://doi.org/10.1103/physrevb.106.134211

We study the effect of spatially correlated classical noise on both Anderson and many-body localization of a disordered fermionic chain. By analyzing the evolution of the particle density imbalance following a quench from an initial charge density wa... Read More about Anderson and many-body localization in the presence of spatially correlated classical noise.

Metastable discrete time-crystal resonances in a dissipative central spin system (2022)
Journal Article
Cabot, A., Carollo, F., & Lesanovsky, I. (2022). Metastable discrete time-crystal resonances in a dissipative central spin system. Physical Review B, 106(13), Article 134311. https://doi.org/10.1103/physrevb.106.134311

We consider the nonequilibrium behavior of a central spin system where the central spin is periodically reset to its ground state. The quantum-mechanical evolution under this effectively dissipative dynamics is described by a discrete-time quantum ma... Read More about Metastable discrete time-crystal resonances in a dissipative central spin system.

Asynchronism and nonequilibrium phase transitions in (1+1) -dimensional quantum cellular automata (2022)
Journal Article
Gillman, E., Carollo, F., & Lesanovsky, I. (2022). Asynchronism and nonequilibrium phase transitions in (1+1) -dimensional quantum cellular automata. Physical Review E, 106(3), Article L032103. https://doi.org/10.1103/PhysRevE.106.L032103

Probabilistic cellular automata provide a simple framework for exploring classical nonequilibrium processes. Recently, quantum cellular automata have been proposed that rely on the propagation of a one-dimensional quantum state along a fictitious dis... Read More about Asynchronism and nonequilibrium phase transitions in (1+1) -dimensional quantum cellular automata.

Signatures of a quantum stabilized fluctuating phase and critical dynamics in a kinetically constrained open many-body system with two absorbing states (2022)
Journal Article
Carollo, F., Gnann, M., Perfetto, G., & Lesanovsky, I. (2022). Signatures of a quantum stabilized fluctuating phase and critical dynamics in a kinetically constrained open many-body system with two absorbing states. Physical Review B, 106(9), Article 094315. https://doi.org/10.1103/PhysRevB.106.094315

We introduce and investigate an open many-body quantum system in which kinetically constrained coherent and dissipative processes compete. The form of the incoherent dissipative dynamics is inspired by that of epidemic spreading or cellular-automaton... Read More about Signatures of a quantum stabilized fluctuating phase and critical dynamics in a kinetically constrained open many-body system with two absorbing states.

Inferring Markovian quantum master equations of few-body observables in interacting spin chains (2022)
Journal Article
Carnazza, F., Carollo, F., Zietlow, D., Andergassen, S., Martius, G., & Lesanovsky, I. (2022). Inferring Markovian quantum master equations of few-body observables in interacting spin chains. New Journal of Physics, 24(7), Article 073033. https://doi.org/10.1088/1367-2630/ac7df6

Full information about a many-body quantum system is usually out-of-reach due to the exponential growth - with the size of the system - of the number of parameters needed to encode its state. Nonetheless, in order to understand the complex phenomenol... Read More about Inferring Markovian quantum master equations of few-body observables in interacting spin chains.

Accelerating the approach of dissipative quantum spin systems towards stationarity through global spin rotations (2022)
Journal Article
Kochsiek, S., Carollo, F., & Lesanovsky, I. (2022). Accelerating the approach of dissipative quantum spin systems towards stationarity through global spin rotations. Physical Review A, 106(1), Article 012207. https://doi.org/10.1103/PhysRevA.106.012207

We consider open quantum systems whose dynamics is governed by a time-independent Markovian Lindblad master equation. Such systems approach their stationary state on a timescale that is determined by the spectral gap of the generator of the master eq... Read More about Accelerating the approach of dissipative quantum spin systems towards stationarity through global spin rotations.

Quantum fluctuations and correlations in open quantum Dicke models (2022)
Journal Article
Boneberg, M., Lesanovsky, I., & Carollo, F. (2022). Quantum fluctuations and correlations in open quantum Dicke models. Physical Review A, 106(1), Article 012212. https://doi.org/10.1103/PhysRevA.106.012212

In the vicinity of ground-state phase transitions quantum correlations can display nonanalytic behavior and critical scaling. This signature of emergent collective effects has been widely investigated within a broad range of equilibrium settings. How... Read More about Quantum fluctuations and correlations in open quantum Dicke models.

Phonon dressing of a facilitated one-dimensional Rydberg lattice gas (2022)
Journal Article
Magoni, M., Mazza, P., & Lesanovsky, I. (2022). Phonon dressing of a facilitated one-dimensional Rydberg lattice gas. SciPost Physics Core, 5(3), Article 041. https://doi.org/10.21468/SciPostPhysCore.5.3.041

We study the dynamics of a one-dimensional Rydberg lattice gas under facilitation (antiblockade) conditions which implements a so-called kinetically constrained spin system. Here an atom can only be excited to a Rydberg state when one of its neighbor... Read More about Phonon dressing of a facilitated one-dimensional Rydberg lattice gas.

Fast spin squeezing by distance-selective long-range interactions with Rydberg molecule dressing (2022)
Journal Article
Wu, H., Lin, X. Y., Ding, Z. X., Zheng, S. B., Lesanovsky, I., & Li, W. (2022). Fast spin squeezing by distance-selective long-range interactions with Rydberg molecule dressing. Science China Physics, Mechanics and Astronomy, 65(8), Article 280311. https://doi.org/10.1007/s11433-022-1910-0

We propose a Rydberg molecule dressing scheme to create strong and long-ranged interactions at selective distances. This is achieved through laser coupling ground-state atoms off-resonantly to an attractive molecular curve of two interacting Rydberg... Read More about Fast spin squeezing by distance-selective long-range interactions with Rydberg molecule dressing.

Hierarchical classical metastability in an open quantum East model (2022)
Journal Article
Rose, D. C., MacIeszczak, K., Lesanovsky, I., & Garrahan, J. P. (2022). Hierarchical classical metastability in an open quantum East model. Physical Review E, 105(4), Article 044121. https://doi.org/10.1103/PhysRevE.105.044121

We study in detail an open quantum generalization of a classical kinetically constrained model - the East model - known to exhibit slow glassy dynamics stemming from a complex hierarchy of metastable states with distinct lifetimes. Using the recently... Read More about Hierarchical classical metastability in an open quantum East model.

Exact solution of a boundary time-crystal phase transition: Time-translation symmetry breaking and non-Markovian dynamics of correlations (2022)
Journal Article
Carollo, F., & Lesanovsky, I. (2022). Exact solution of a boundary time-crystal phase transition: Time-translation symmetry breaking and non-Markovian dynamics of correlations. Physical Review A, 105(4), Article L040202. https://doi.org/10.1103/PhysRevA.105.L040202

The breaking of the continuous time-translation symmetry manifests, in Markovian open quantum systems, through the emergence of nonstationary dynamical phases. Systems that display nonequilibrium transitions into these phases are referred to as time... Read More about Exact solution of a boundary time-crystal phase transition: Time-translation symmetry breaking and non-Markovian dynamics of correlations.

Phase diagram of quantum generalized Potts-Hopfield neural networks (2022)
Journal Article
Fiorelli, E., Lesanovsky, I., & Müller, M. (2022). Phase diagram of quantum generalized Potts-Hopfield neural networks. New Journal of Physics, 24(3), Article 033012. https://doi.org/10.1088/1367-2630/ac5490

We introduce and analyze an open quantum generalization of the q-state Potts-Hopfield neural network (NN), which is an associative memory model based on multi-level classical spins. The dynamics of this many-body system is formulated in terms of a Ma... Read More about Phase diagram of quantum generalized Potts-Hopfield neural networks.

Nonequilibrium Dark Space Phase Transition (2022)
Journal Article
Carollo, F., & Lesanovsky, I. (2022). Nonequilibrium Dark Space Phase Transition. Physical Review Letters, 128(4), Article 040603. https://doi.org/10.1103/PhysRevLett.128.040603

We introduce the concept of dark space phase transition, which may occur in open many-body quantum systems where irreversible decay, interactions, and quantum interference compete. Our study is based on a quantum many-body model that is inspired by c... Read More about Nonequilibrium Dark Space Phase Transition.