Zobrazeno 1 - 10
of 460
pro vyhledávání: '"Rezakhani, A. T."'
We pose and address the radical question that whether quantum mechanics, known for its firm internal structure and enormous empirical success, carries in itself the genome of larger quantum theories which have higher internal intricacies and phenomen
Externí odkaz:
http://arxiv.org/abs/2308.02630
Publikováno v:
Phys. Rev. A 105, 022204 (2022)
We study the role of correlation in mechanisms of energy exchange between an interacting bipartite quantum system and its environment by decomposing the energy of the system to local and correlation-related contributions. When the system Hamiltonian
Externí odkaz:
http://arxiv.org/abs/2111.00296
Autor:
Qaleh, Z. Nafari, Rezakhani, A. T.
Publikováno v:
Phys. Rev. A 105, 012208 (2022)
We provide a comprehensive study of the energy transfer phenomenon -- populating a given energy level -- in 3- and 4-level quantum systems coupled to two thermal baths. In particular, we examine the effects of an external periodic driving and the coh
Externí odkaz:
http://arxiv.org/abs/2105.14358
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. Rev. Research 6, 013243(2024)
Understanding system-bath correlations in open quantum systems is essential for various quantum information and technology applications. Derivations of most master equations (MEs) for the dynamics of open systems require approximations that mask depe
Externí odkaz:
http://arxiv.org/abs/2104.04248
Autor:
Khanahmadi, M., Rezakhani, A. T.
For heat engines working between two heat baths, functionality is often conditioned on a set of fixed constraints such as given internal structure of the engine and given temperatures for the baths. It is, however, important to devise heat engines wh
Externí odkaz:
http://arxiv.org/abs/2104.00115
Autor:
Rezvani, V., Rezakhani, A. T.
Publikováno v:
Phys. Rev. A 104, 012215 (2021)
Manipulation of a quantum system requires the knowledge of how it evolves. To impose that the dynamics of a system becomes a particular target operation (for any preparation of the system), it may be more useful to have an equation of motion for the
Externí odkaz:
http://arxiv.org/abs/1912.12066
Publikováno v:
Phys. Rev. A 105, L040201 (2022)
Given the evolution of an arbitrary open quantum system, we formulate a general and unambiguous method to separate the internal energy change of the system into an entropy-related contribution and a part causing no entropy change, identified as heat
Externí odkaz:
http://arxiv.org/abs/1912.01939
Publikováno v:
Phys. Rev. A 101, 042311 (2020)
Correlations disguised in various forms underlie a host of important phenomena in classical and quantum systems, such as information and energy exchanges. The quantum mutual information and the norm of the correlation matrix are both considered as pr
Externí odkaz:
http://arxiv.org/abs/1909.06661
Publikováno v:
Phys. Rev. A 101, 013403 (2020)
We provide a physically motivated definition for the binding energy (or bond-dissociation) of a bipartite quantum system. We consider coherently applying an external field to cancel out the interaction between the subsystems, to break their bond and
Externí odkaz:
http://arxiv.org/abs/1907.09364