Zobrazeno 1 - 10
of 296
pro vyhledávání: '"Alicki R"'
Autor:
Gelbwaser-Klimovsky, D., Szczygielski, K., Vogl, U., Saß, A., Alicki, R., Kurizki, G., Weitz, M.
Publikováno v:
Phys. Rev. A 91, 023431 (2015)
We explore, theoretically and experimentally, a method for cooling a broadband heat reservoir, via its laser-assisted collisions with two-level atoms followed by their fluorescence. This method is shown to be advantageous compared to existing laser-c
Externí odkaz:
http://arxiv.org/abs/1502.08019
Akademický článek
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Work extraction from a heat engine in a cycle by a quantum mechanical device (quantum "piston") is analyzed. The standard definition of work fails in the quantum domain. The correct extractable work and its efficiency bound are shown to crucially dep
Externí odkaz:
http://arxiv.org/abs/1302.3468
Publikováno v:
Phys. Rev. E 87, 012120 (2013)
The recently developed technique combining the weak coupling limit with the Floquet formalism is applied to a model of two-level atom driven by a strong laser field and weakly coupled to heat baths. Firstly, the case of a single electromagnetic bath
Externí odkaz:
http://arxiv.org/abs/1211.5665
Autor:
Alicki, R., Miklaszewski, W.
There exists a large number of experimental and theoretical results supporting the picture of macroscopic qubits implemented by nanoscopic Josephson junctions of three different types -- charge qubit, flux qubit and phase qubit. The standard unified
Externí odkaz:
http://arxiv.org/abs/1012.0140
We propose a new formalism of quantum subsystems which allows to unify the existing and new methods of reduced description of quantum systems. The main mathematical ingredients are completely positive maps and correlation functions. In this formalism
Externí odkaz:
http://arxiv.org/abs/0902.3340
Publikováno v:
Open Syst. Inf. Dyn. 17 (2010) 1
We analyse stability of the four-dimensional Kitaev model - a candidate for scalable quantum memory - in finite temperature within the weak coupling Markovian limit. It is shown that, below a critical temperature, certain topological qubit observable
Externí odkaz:
http://arxiv.org/abs/0811.0033
Publikováno v:
J. Phys. A: Math. Theor. 42 (2009) 065303
The thermalization process of the 2D Kitaev model is studied within the Markovian weak coupling approximation. It is shown that its largest relaxation time is bounded from above by a constant independent of the system size and proportional to $\exp(2
Externí odkaz:
http://arxiv.org/abs/0810.4584
Publikováno v:
J. Phys. A: Math. Theor. 40 (2007) 6451-6467.
We compute rigorously the ground and equilibrium states for Kitaev's model in 2D, both the finite and infinite version, using an analogy with the 1D Ising ferromagnet. Next, we investigate the structure of the reduced dynamics in the presence of ther
Externí odkaz:
http://arxiv.org/abs/quant-ph/0702102
Publikováno v:
Phys. Rev. A 73, 052311 (2006)
We critically examine the internal consistency of a set of minimal assumptions entering the theory of fault-tolerant quantum error correction for Markovian noise. These assumptions are: fast gates, a constant supply of fresh and cold ancillas, and a
Externí odkaz:
http://arxiv.org/abs/quant-ph/0506201