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pro vyhledávání: '"Benatti F"'
We consider a specific instance of a superconducting circuit, the so-called charge-qubit, consisting of a capacitor and a Josephson junction. Starting from the microscopic description of the latter in terms of two tunneling BCS models in the strong-c
Externí odkaz:
http://arxiv.org/abs/2304.13351
In phenomenological applications, time evolutions of Bloch-Redfield type are widely adopted for modelling open system dynamics, despite their non-positive preserving character: this physical inconsistency, that in general shows up at small times, is
Externí odkaz:
http://arxiv.org/abs/2206.04508
Autor:
Alipour, S., Benatti, F., Afsary, M., Bakhshinezhad, F., Ramezani, M., Ala-Nissila, T., Rezakhani, A. T.
We extend on ideas from standard thermodynamics to show that temperature can be assigned to a general nonequilibrium quantum system. By choosing a physically motivated complete set of observables and expanding the system state thereupon, one can read
Externí odkaz:
http://arxiv.org/abs/2105.11915
Publikováno v:
Phys. Rep. 878, 1 (2020)
For systems consisting of distinguishable particles, there exists an agreed upon notion of entanglement which is fundamentally based on the possibility of addressing individually each one of the constituent parties. Instead, the indistinguishability
Externí odkaz:
http://arxiv.org/abs/2007.06253
Quantum detailed balance conditions and quantum fluctuation relations are two important concepts in the dynamics of open quantum systems: both concern how such systems behave when they thermalize because of interaction with an environment. We prove t
Externí odkaz:
http://arxiv.org/abs/1810.09174
Publikováno v:
Int. J. Quant. Inf. 15 (2017) 1740014
Quantum-enhanced metrology is boosting interferometer sensitivities to extraordinary levels, up to the point where table-top experiments have been proposed to measure Planck-scale effects predicted by quantum gravity theories. In setups involving mul
Externí odkaz:
http://arxiv.org/abs/1711.02358
Publikováno v:
Eur. Phys. J. C (2017) 77: 651
The semileptonic decay asymmetry $\mathcal{A}_{\Delta m}$ is studied within the open quantum systems approach to the physics of the neutral meson $B^0$-$\overline{B^0}$ system: this extended treatment takes into account possible non-standard, dissipa
Externí odkaz:
http://arxiv.org/abs/1709.07313
Publikováno v:
Open Syst. Inf. Dyn. 24, 1740004 (2017)
We argue that in the case of identical particles the most natural identification of separability, that is of absence of non-classical correlations, is via the factorization of mean values of commuting observables. It thus follows that separability an
Externí odkaz:
http://arxiv.org/abs/1709.05520
Publikováno v:
Sci. Rep. 7, 12447 (2017)
In the weak-coupling limit approach to open quantum systems, the presence of the bath is eliminated and accounted for by a master equation that introduces dissipative contributions to the system reduced dynamics. Within this framework, there are no b
Externí odkaz:
http://arxiv.org/abs/1709.02174
Publikováno v:
J. Phys. A: Math. Theor. 50 (2017) 423001
Recent experimental results point to the existence of coherent quantum phenomena in systems made of a large number of particles, despite the fact that for many-body systems the presence of decoherence is hardly negligible and emerging classicality is
Externí odkaz:
http://arxiv.org/abs/1708.02752