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Discrete time crystals in the absence of manifest symmetries or disorder in open quantum systems

Autor: Gambetta, F. M., Carollo, F., Marcuzzi, M., Garrahan, J. P., Lesanovsky, I.

Publikováno v: Phys. Rev. Lett. 122, 015701 (2019)

We establish a link between metastability and a discrete time-crystalline phase in a periodically driven open quantum system. The mechanism we highlight requires neither the system to display any microscopic symmetry nor the presence of disorder, but

Externí odkaz: http://arxiv.org/abs/1807.10161

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Singularities in large deviations of work in quantum quenches

Autor: Rotondo, P., Minar, J., Garrahan, J. P., Lesanovsky, I., Marcuzzi, M.

Publikováno v: Phys. Rev. B 98, 184303 (2018)

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

Externí odkaz: http://arxiv.org/abs/1802.09293

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Open quantum generalisation of Hopfield neural networks

Autor: Rotondo, P., Marcuzzi, M., Garrahan, J. P., Lesanovsky, I., Muller, M.

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

Externí odkaz: http://arxiv.org/abs/1701.01727

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Prethermalization from a low-density Holstein-Primakoff expansion

Autor: Marcuzzi, M., Marino, J., Gambassi, A., Silva, A.

Publikováno v: Phys. Rev. B 94, 214304 (2016)

We consider the non-equilibrium dynamics arising after a quench of the transverse magnetic field of a quantum Ising chain, together with the sudden switch-on of a long-range interaction term. The dynamics after the quantum quench is mapped onto a ful

Externí odkaz: http://arxiv.org/abs/1609.06361

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Emergent kinetic constraints in open quantum systems

Autor: Everest, B., Marcuzzi, M., Garrahan, J. P., Lesanovsky, I.

Publikováno v: Phys. Rev. E 94, 052108 (2016)

Kinetically constrained spin systems play an important role in understanding key properties of the dynamics of slowly relaxing materials, such as glasses. So far kinetic constraints have been introduced in idealised models aiming to capture specific

Externí odkaz: http://arxiv.org/abs/1602.05839

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Absorbing state phase transition with competing quantum and classical fluctuations

Autor: Marcuzzi, M., Buchhold, M., Diehl, S., Lesanovsky, I.

Publikováno v: Phys. Rev. Lett. 116, 245701 (2016)

Stochastic processes with absorbing states feature remarkable examples of non-equilibrium universal phenomena. While a broad understanding has been progressively established in the classical regime, relatively little is known about the behavior of th

Externí odkaz: http://arxiv.org/abs/1601.07305

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Effective dynamics of strongly dissipative Rydberg gases

Autor: Marcuzzi, M, Schick, J, Olmos, B, Lesanovsky, I

Publikováno v: J. Phys. A: Math. Theor. 47, 482001 (2014)

We investigate the evolution of interacting Rydberg gases in the limit of strong noise and dissipation. Starting from a description in terms of a Markovian quantum master equation we derive effective equations of motion that govern the dynamics on a

Externí odkaz: http://arxiv.org/abs/1409.8170

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Universal non-equilibrium properties of dissipative Rydberg gases

Autor: Marcuzzi, M., Levi, E., Diehl, S., Garrahan, J. P., Lesanovsky, I.

Publikováno v: Phys. Rev. Lett. 113, 210401 (2014)

We investigate the out-of-equilibrium behavior of a dissipative gas of Rydberg atoms that features a dynamical transition between two stationary states characterized by different excitation densities. We determine the structure and properties of the

Externí odkaz: http://arxiv.org/abs/1406.1015

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A terahertz-driven non-equilibrium phase transition in a room temperature atomic vapour

Autor: Wade, C. G., Marcuzzi, M., Levi, E., Kondo, J. M., Lesanovsky, I., Adams, C. S., Weatherill, K. J.

Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Nature communications, 2018, Vol.9, pp.3567 [Peer Reviewed Journal]
Nature Communications

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 dri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::3bbd3b972c2f042099e79025c85bbbfa
http://link.springer.com/article/10.1038/s41467-018-05597-4

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