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Professor IGOR LESANOVSKY's Outputs (133)

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.

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.

Non-adiabatic quantum state preparation and quantum state transport in chains of Rydberg atoms (2017)
Journal Article
Ostmann, M., Minář, J., Marcuzzi, M., Levi, E., & Lesanovsky, I. (2017). Non-adiabatic quantum state preparation and quantum state transport in chains of Rydberg atoms. New Journal of Physics, 19(12), https://doi.org/10.1088/1367-2630/aa983e

Motivated by recent progress in the experimental manipulation of cold atoms in optical lattices, we study three different protocols for non-adiabatic quantum state preparation and state transport in chains of Rydberg atoms. The protocols we discuss a... Read More about Non-adiabatic quantum state preparation and quantum state transport in chains of Rydberg atoms.

Fluctuating hydrodynamics, current fluctuations and hyperuniformity in boundary-driven open quantum chains (2017)
Journal Article
Carollo, F., Garrahan, J. P., Lesanovsky, I., & Pérez-Espigares, C. (2017). Fluctuating hydrodynamics, current fluctuations and hyperuniformity in boundary-driven open quantum chains. Physical Review E, 96(5), Article 052118. https://doi.org/10.1103/PhysRevE.96.052118

We consider a class of either fermionic or bosonic non-interacting open quantum chains driven by dissipative interactions at the boundaries and study the interplay of coherent transport and dissipative processes, such as bulk dephasing and diffusion.... Read More about Fluctuating hydrodynamics, current fluctuations and hyperuniformity in boundary-driven open quantum chains.

Metastable decoherence-free subspaces and electromagnetically induced transparency in interacting many-body systems (2017)
Journal Article
Macieszczak, K., Zhou, Y., Hofferberth, S., Garrahan, J. P., Li, W., & Lesanovsky, I. (2017). Metastable decoherence-free subspaces and electromagnetically induced transparency in interacting many-body systems. Physical Review A, 96(4), Article 043860. https://doi.org/10.1103/PhysRevA.96.043860

We investigate the dynamics of a generic interacting many-body system under conditions of electromagnetically induced transparency (EIT). This problem is of current relevance due to its connection to non-linear optical media realized by Rydberg atoms... Read More about Metastable decoherence-free subspaces and electromagnetically induced transparency in interacting many-body systems.

Phase transitions in electron spin resonance under continuous microwave driving (2017)
Journal Article
Karabanov, A., Rose, D. C., Köckenberger, W., Garrahan, J. P., & Lesanovsky, I. (in press). Phase transitions in electron spin resonance under continuous microwave driving. Physical Review Letters, 119, https://doi.org/10.1103/PhysRevLett.119.150402

We study an ensemble of strongly coupled electrons under continuous microwave irradiation interacting with a dissipative environment, a problem of relevance to the creation of highly polarized non-equilibrium states
in nuclear magnetic resonance. We... Read More about Phase transitions in electron spin resonance under continuous microwave driving.

Topological properties of a dense atomic lattice gas (2017)
Journal Article
Bettles, R. J., Minář, J., Adams, C. S., Lesanovsky, I., & Olmos, B. (2017). Topological properties of a dense atomic lattice gas. Physical Review A, 96(4), Article 041603. https://doi.org/10.1103/PhysRevA.96.041603

We investigate the existence of topological phases in a dense two-dimensional atomic lattice gas. The coupling of the atoms to the radiation field gives rise to dissipation and a non-trivial coherent long-range exchange interaction whose form goes be... Read More about Topological properties of a dense atomic lattice gas.

Experimental signatures of an absorbing-state phase transition in an open driven many-body quantum system (2017)
Journal Article
Gutiérrez, R., Simonelli, C., Archimi, M., Castellucci, F., Arimondo, E., Ciampini, D., Marcuzzi, M., Lesanovsky, I., & Morsch, O. (2017). Experimental signatures of an absorbing-state phase transition in an open driven many-body quantum system. Physical Review A, 96(4), Article 041602(R). https://doi.org/10.1103/PhysRevA.96.041602

Understanding and probing phase transitions in non-equilibrium systems is an ongoing challenge in physics. A particular instance are phase transitions that occur between a non-fluctuating absorbing phase, e.g., an extinct population, and one in which... Read More about Experimental signatures of an absorbing-state phase transition in an open driven many-body quantum system.

Epidemic dynamics in open quantum spin systems (2017)
Journal Article
Perez-Espigares, C., Marcuzzi, M., Gutierrez, R., & Lesanovsky, I. (2017). Epidemic dynamics in open quantum spin systems. Physical Review Letters, 119(14), 1-6. https://doi.org/10.1103/PhysRevLett.119.140401

We explore the non-equilibrium evolution and stationary states of an open many-body system which displays epidemic spreading dynamics in a classical and a quantum regime. Our study is motivated by recent experiments conducted in strongly interacting... Read More about Epidemic dynamics in open quantum spin systems.

Effective spin physics in two-dimensional cavity QED arrays (2017)
Journal Article
Minář, J., Söyler, Ş. G., Rotondo, P., & Lesanovsky, I. (2017). Effective spin physics in two-dimensional cavity QED arrays. New Journal of Physics, 19, https://doi.org/10.1088/1367-2630/aa753c

We investigate a strongly correlated system of light and matter in two-dimensional cavity arrays. We formulate a multimode Tavis–Cummings (TC) Hamiltonian for two-level atoms coupled to cavity modes and driven by an external laser field which reduces... Read More about Effective spin physics in two-dimensional cavity QED arrays.

Single strontium Rydberg ion confined in a Paul trap (2017)
Journal Article
Higgins, G., Li, W., Pokorny, F., Zhang, C., Kress, F., Maier, C., Haag, J., Bodart, Q., Lesanovsky, I., & Hennrich, M. (2017). Single strontium Rydberg ion confined in a Paul trap. Physical Review X, 7(2), Article 021038. https://doi.org/10.1103/PhysRevX.7.021038

Trapped Rydberg ions are a promising new system for quantum information processing. They have the potential to join the precise quantum operations of trapped ions and the strong, long-range interactions between Rydberg atoms. Combining the two system... Read More about Single strontium Rydberg ion confined in a Paul trap.

Facilitation dynamics and localization phenomena in Rydberg lattice gases with position disorder (2017)
Journal Article
Marcuzzi, M., Minář, J., Barredo, D., Léséleuc, S. D., Labuhn, H., Lahaye, T., Browaeys, A., Levi, E., & Lesanovsky, I. (2017). Facilitation dynamics and localization phenomena in Rydberg lattice gases with position disorder. Physical Review Letters, 118(6-10), Article 063606. https://doi.org/10.1103/PhysRevLett.118.063606

We explore the dynamics of Rydberg excitations in an optical tweezer array under anti-blockade (or facilitation) conditions. Due to the finite temperature the atomic positions are randomly spread, an effect that leads to quenched correlated disorder... Read More about Facilitation dynamics and localization phenomena in Rydberg lattice gases with position disorder.

Nonequilibrium effective field theory for absorbing state phase transitions in driven open quantum spin systems (2017)
Journal Article
Buchhold, M., Everest, B., Marcuzzi, M., Lesanovsky, I., & Diehl, S. (2017). Nonequilibrium effective field theory for absorbing state phase transitions in driven open quantum spin systems. Physical Review B, 95, https://doi.org/10.1103/PhysRevB.95.014308

Phase transitions to absorbing states are among the simplest examples of critical phenomena out of equilibrium. The characteristic feature of these models is the presence of a fluctuationless configuration which the dynamics cannot leave, which has p... Read More about Nonequilibrium effective field theory for absorbing state phase transitions in driven open quantum spin systems.

Role of interactions in a dissipative many-body localized system (2017)
Journal Article
Everest, B., Lesanovsky, I., Garrahan, J. P., & Levi, E. (2017). Role of interactions in a dissipative many-body localized system. Physical Review B, 95(2), https://doi.org/10.1103/PhysRevB.95.024310

Recent experimental and theoretical efforts have focused on the effect of dissipation on quantum many-body systems in their many-body localized (MBL) phase. While in the presence of dephasing noise such systems reach a unique ergodic state, their dyn... Read More about Role of interactions in a dissipative many-body localized system.