All Outputs (14)

Non-equilibrium absorbing state phase transitions in discrete-time quantum cellular automaton dynamics on spin lattices (2018)
Journal Article
Lesanovsky, I., Macieszczak, K., & Garrahan, J. P. (2018). Non-equilibrium absorbing state phase transitions in discrete-time quantum cellular automaton dynamics on spin lattices. Quantum Science and Technology, 4(2), https://doi.org/10.1088/2058-9565/aaf831

We introduce a discrete-time quantum dynamics on a two-dimensional lattice that describes the evolution of a $1+1$-dimensional spin system. The underlying quantum map is constructed such that the reduced state at each time step is separable. We show... Read More about Non-equilibrium absorbing state phase transitions in discrete-time quantum cellular automaton dynamics on spin lattices.

Singularities in large deviations of work in quantum quenches (2018)
Journal Article
Rotondo, P., Minář, J., Garrahan, J. P., Lesanovsky, I., & Marcuzzi, M. (2018). Singularities in large deviations of work in quantum quenches. Physical Review B, 98(18), Article 184303. https://doi.org/10.1103/physrevb.98.184303

We investigate large deviations of the work performed in a quantum quench across two different phases separated by a quantum critical point, using as an example the Dicke model quenched from its superradiant to its normal phase. We extract the distri... Read More about Singularities in large deviations of work in quantum quenches.

Current fluctuations in boundary-driven quantum spin chains (2018)
Journal Article
Carollo, F., Garrahan, J. P., & Lesanovsky, I. (2018). Current fluctuations in boundary-driven quantum spin chains. Physical Review B, 98(9), 1-9. https://doi.org/10.1103/physrevb.98.094301

Boundary-driven quantum spin chains are paradigmatic nonequilibrium systems featuring the presence of particle currents. In general, it may not be possible to distinguish an incoherent type of particle transport from a truly quantum coherent one thro... Read More about Current fluctuations in boundary-driven quantum spin chains.

A terahertz-driven non-equilibrium phase transition in a room temperature atomic vapour (2018)
Journal Article
Wade, C., Marcuzzi, M., Levi, E., Kondo, J., Lesanovsky, I., Adams, C., & Weatherill, K. (2018). A terahertz-driven non-equilibrium phase transition in a room temperature atomic vapour. Nature Communications, 9, 1-7. https://doi.org/10.1038/s41467-018-05597-4

There are few demonstrated examples of phase transitions that may be driven directly by terahertz frequency electric fields, and those that are known require field strengths exceeding 1 MV cm−1. Here we report a non-equilibrium phase transition drive... Read More about A terahertz-driven non-equilibrium phase transition in a room temperature atomic vapour.

Glassy dynamics due to a trajectory phase transition in dissipative Rydberg gases (2018)
Journal Article
Pérez-Espigares, C., Lesanovsky, I., Garrahan, J. P., & Gutiérrez, R. (2018). Glassy dynamics due to a trajectory phase transition in dissipative Rydberg gases. Physical Review A, 98(2), https://doi.org/10.1103/physreva.98.021804

The physics of highly excited Rydberg atoms is governed by blockade or exclusion interactions that hinder the excitation of atoms in the proximity of a previously excited one. This leads to cooperative effects and a relaxation dynamics displaying spa... Read More about Glassy dynamics due to a trajectory phase transition in dissipative Rydberg gases.

Spectral properties of simple classical and quantum reset processes (2018)
Journal Article
Rose, D. C., Touchette, H., Lesanovsky, I., & Garrahan, J. P. (2018). Spectral properties of simple classical and quantum reset processes. Physical Review E, 98(2), Article 022129. https://doi.org/10.1103/physreve.98.022129

Substrate-induced shifts and screening in the fluorescence spectra of supramolecular adsorbed organic monolayers (2018)
Journal Article
Kerfoot, J., Korolkov, V. V., Nizovtsev, A. S., Jones, R., Taniguchi, T., Watanabe, K., Lesanovsky, I., Olmos, B., Besley, N. A., Besley, E., & Beton, P. H. (2018). Substrate-induced shifts and screening in the fluorescence spectra of supramolecular adsorbed organic monolayers. Journal of Chemical Physics, 149(5), Article 054701. https://doi.org/10.1063/1.5041418

We have investigated the influence of the substrate on the fluorescence of adsorbed organic molecules. Monolayer films of perylene-3,4,9,10-tetracarboxylic-3,4,9,10-diimide (PTCDI), a supramolecular network formed from PTCDI and melamine, and perylen... Read More about Substrate-induced shifts and screening in the fluorescence spectra of supramolecular adsorbed organic monolayers.

Making rare events typical in Markovian open quantum systems (2018)
Journal Article
Carollo, F., Garrahan, J. P., Lesanovsky, I., & Pérez-Espigares, C. (2018). Making rare events typical in Markovian open quantum systems. Physical Review A, 98(1), Article 010103. https://doi.org/10.1103/physreva.98.010103

Large dynamical fluctuations—atypical realizations of the dynamics sustained over long periods of time—can play a fundamental role in determining the properties of collective behavior of both classical and quantum nonequilibrium systems. Rare dynamic... Read More about Making rare events typical in Markovian open quantum systems.

Dissipative many-body physics of cold Rydberg atoms (2018)
Journal Article
Morsch, O., & Lesanovsky, I. (2018). Dissipative many-body physics of cold Rydberg atoms. Rivista del Nuovo Cimento, 41(7), 383-414. https://doi.org/10.1393/ncr/i2018-10149-7

In the last twenty years, Rydberg atoms have become a versatile and much studied system for implementing quantum many-body systems in the framework of quantum computation and quantum simulation. However, even in the absence of coherent evolution Ryd... Read More about Dissipative many-body physics of cold Rydberg atoms.

Modified dipole-dipole interaction and dissipation in an atomic ensemble near surfaces (2018)
Journal Article
Jones, R., Needham, J. A., Lesanovsky, I., Intravaia, F., & Olmos, B. (2018). Modified dipole-dipole interaction and dissipation in an atomic ensemble near surfaces. Physical Review A, 97(5), Article 053841. https://doi.org/10.1103/PhysRevA.97.053841

We study how the radiative properties of a dense ensemble of atoms can be modified when they are placed near or between metallic or dielectric surfaces. If the average separation between the atoms is comparable or smaller than the wavelength of the s... Read More about Modified dipole-dipole interaction and dissipation in an atomic ensemble near surfaces.

Many-body kinetics of dynamic nuclear polarization by the cross effect (2018)
Journal Article
Karabanov, A., Wiśniewski, D., Raimondi, F., Lesanovsky, I., & Köckenberger, W. (in press). Many-body kinetics of dynamic nuclear polarization by the cross effect. Physical Review A, 97(3), https://doi.org/10.1103/PhysRevA.97.031404

Dynamic nuclear polarization (DNP) is an out-of-equilibrium method for generating nonthermal spin polarization which provides large signal enhancements in modern diagnostic methods based on nuclear magnetic resonance. A particular instance is cross-e... Read More about Many-body kinetics of dynamic nuclear polarization by the cross effect.

Open quantum generalisation of Hopfield neural networks (2018)
Journal Article
Rotondo, P., Marcuzzi, M., Garrahan, J. P., Lesanovsky, I., & Müller, M. (2018). Open quantum generalisation of Hopfield neural networks. Journal of Physics A: Mathematical and Theoretical, 51(11), Article 115301. https://doi.org/10.1088/1751-8121/aaabcb

We propose a new framework to understand how quantum effects may impact on the dynamics of neural networks. We implement the dynamics of neural networks in terms of Markovian open quantum systems, which allows us to treat thermal and quantum coherent... Read More about Open quantum generalisation of Hopfield neural networks.

Devil's staircases without particle-hole symmetry (2018)
Journal Article
Lan, Z., Lesanovsky, I., & Li, W. (2018). Devil's staircases without particle-hole symmetry. Physical Review B, 97, https://doi.org/10.1103/PhysRevB.97.075117

We present and analyze spin models with long-range interactions whose ground state features a so-called devil’s staircase and where plateaus of the staircase are accessed by varying two-body interactions. This is in contrast to the canonical devil’s... Read More about Devil's staircases without particle-hole symmetry.

Quench dynamics of a dissipative Rydberg gas in the classical and quantum regimes (2018)
Journal Article
Gribben, D., Lesanovsky, I., & Gutierrez, R. (in press). Quench dynamics of a dissipative Rydberg gas in the classical and quantum regimes. Physical Review A, 97(1), https://doi.org/10.1103/PhysRevA.97.011603

Understanding the non-equilibrium behavior of quantum systems is a major goal of contemporary physics. Much research is currently focused on the dynamics of many-body systems in lowdimensional lattices following a quench, i.e., a sudden change of par... Read More about Quench dynamics of a dissipative Rydberg gas in the classical and quantum regimes.