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9 papers · 2 filters
Photon recoil momentum in a Bose-Einstein condensate of a dilute gas
Yu. A. Avetisyan, V. A. Malyshev, E. D. Trifonov
We develop a "minimal" microscopic model to describe a two-pulse-Ramsay-interferometer-based scheme of measurement of the photon recoil momentum in a Bose-Einstein condensate of a…
Quantum transport in degenerate systems
S. V. Kozyrev
Transport in nonequilibrium degenerate quantum systems is investigated. Transfer rate depends on parameters of the system. In this paper we investigate dependence of the flow (tran…
On tomographic representation on the plane of the space of Schwartz operators and its dual
G. G. Amosov
It is shown that the set of optical quantum tomograms can be provided with the topology of Frechet space. In such a case the conjugate space will consist of symbols of quantum obse…
Divisibility of quantum dynamical maps and collision models
S. N. Filippov, J. Piilo, S. Maniscalco +1
Divisibility of dynamical maps is visualized by trajectories in the parameter space and analyzed within the framework of collision models. We introduce ultimate completely positive…
Ultimate entanglement robustness of two-qubit states against general local noises
Sergey N. Filippov, Vladimir V. Frizen, Daria V. Kolobova
We study the problem of optimal preparation of a bipartite entangled state, which remains entangled the longest time under action of local qubit noises. We show that for unital noi…
Paradox of Photons Disconnected Trajectories Being Located by Means of "Weak Measurements" in the Nested Mach-Zehnder Interferometer
Gennady N. Nikolaev
Recently, a scheme based on the method of weak measurements to register the trajectories of photons passing through a nested Mach-Zehnder interferometer was proposed [L. Vaidman, P…