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- W2040764089 abstract "Abstract The exact Wigner function of a parametrically excited quantum oscillator in a phase-sensitive amplifying/attenuating reservoir is found for initial even/odd coherent states. Studying the evolution of negativity of the Wigner function we show the difference between the “initial positivization time” (IPT), which is inversely proportional to the square of the initial size of the superposition, and the “final positivization time” (FPT), which does not depend on this size. Both these times can be made arbitrarily long in maximally squeezed high-temperature reservoirs. Besides, we find the conditions when some (small) squeezing can exist even after the Wigner function becomes totally positive." @default.
- W2040764089 created "2016-06-24" @default.
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- W2040764089 date "2011-10-01" @default.
- W2040764089 modified "2023-09-24" @default.
- W2040764089 title "Classicalization times of parametrically amplified “Schrödinger cat” states coupled to phase-sensitive reservoirs" @default.
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- W2040764089 doi "https://doi.org/10.1016/j.physleta.2011.08.058" @default.
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