Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Alexandre M. Zagoskin"'
Publikováno v:
Frontiers in Physics, Vol 2 (2014)
Recent devices, using hundreds of superconducting quantum bits, claim to perform quantum computing. However, it is not an easy task to determine and quantify the degree of quantum coherence and control used by these devices. Namely, it is a difficult
Externí odkaz:
https://doaj.org/article/c95957b78a464336a2d80d8e15843b69
Autor:
Vladimir V. Makarov, Alexandre M. Zagoskin, W. Li, Alexander E. Hramov, T. M. Fromhold, Alexander G. Balanov, Mark Greenaway, Andrey V. Andreev
Publikováno v:
npj Quantum Information, Vol 7, Iss 1, Pp 1-7 (2021)
Progress in the creation of large scale, artificial quantum coherent structures demands the investigation of their nonequilibrium dynamics when strong interactions, even between remote parts, are non-perturbative. Analysis of multiparticle quantum co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c52eac6672be88896ca20b86f780ad4f
https://doaj.org/article/41a8f0b539c54629beacc4d4055edc7a
https://doaj.org/article/41a8f0b539c54629beacc4d4055edc7a
Autor:
Alexandre M. Zagoskin
Publikováno v:
Reviews in Physics, Vol 3, Iss, Pp 1-14 (2018)
An explosive development of quantum technologies since 1999 allowed the creation of arrays of natural and artificial quantum unit elements (viz. trapped ions and superconducting qubits), which maintain certain degree of quantum coherence and allow a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f91dda912f4d97a603b5d8b88e643edb
https://doi.org/10.1016/j.revip.2017.11.001
https://doi.org/10.1016/j.revip.2017.11.001
Autor:
Artur Sowa, Alexandre M. Zagoskin
The key difficulty in the modelling of large quantum coherent structures lies in keeping track of nonlocal, multipoint quantum correlations between their constituent parts. Here we consider a special case of such a system, a fractal quantum metamater
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7cbf77f5b4dcf2f6ff8a20df97dc3a7
Autor:
Sergey Savel'ev, Alexandre M. Zagoskin
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-6 (2018)
Scientific Reports
Scientific Reports
A popular interpretation of the “collapse” of the wave function is as being the result of a local interaction (“measurement”) of the quantum system with a macroscopic system (“detector”), with the ensuing loss of phase coherence between m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9450450feb0398f911ea6e454df71780
https://doi.org/10.1038/s41598-018-27759-6
https://doi.org/10.1038/s41598-018-27759-6
Quantum systems are prone to decoherence due to both intrinsic interactions as well as random fluctuations from the environment. Using the Pechukas-Yukawa formalism, we investigate the influence of noise on the dynamics of an adiabatically evolving H
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::848337193d38160a5140f9b0f615bb45
http://arxiv.org/abs/1803.05034
http://arxiv.org/abs/1803.05034
Publikováno v:
The European Physical Journal B. 91
Strong interaction of a system of quantum emitters (e.g., two-level atoms) with electromagnetic field induces specific correlations in the system accompanied by a drastic increase of emitted radiation (superradiation or superfluorescence). Despite th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69e653cf5f137547c0f2e9461b07045c
https://doi.org/10.1140/epjb/e2017-80567-7
https://doi.org/10.1140/epjb/e2017-80567-7
Autor:
Zihad Qureshi, Joseph J. Betouras, Peter Mason, Johnny Zhong, Mumnuna A. Qureshi, Alexandre M. Zagoskin
We consider the evolution of a quantum state of a Hamiltonian which is parametrically perturbed via a term proportional to the adiabatic parameter \lambda (t). Starting with the Pechukas-Yukawa mapping of the energy eigenvalues evolution on a general
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d001c6dd27e420594fc182380e201fec
http://arxiv.org/abs/1706.05243
http://arxiv.org/abs/1706.05243
Publikováno v:
Physical Review A. 95
Theoretical description and simulation of large quantum coherent systems out of equilibrium remains a daunting task. Here we are developing a new approach to it based on the Pechukas-Yukawa formalism, which is especially convenient in case of an adia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7cef63a206b5c103fff12568da196da8
https://doi.org/10.1103/physreva.95.032126
https://doi.org/10.1103/physreva.95.032126
Publikováno v:
Physical Review B. 95
We investigate entanglement dynamics and correlations in the quantum Ising model in arbitrary dimensions using a large-coordination-number expansion. We start from the pure paramagnetic regime obtained through zero spin-spin coupling and subsequently
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66cd32e1403af3c24fb6cc4315b40036
https://doi.org/10.1103/physrevb.95.064304
https://doi.org/10.1103/physrevb.95.064304