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Adelswärd, A.; Wallentowitz, S.; Vogel, W.
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A master equation describing the evolution of the rotational state of a diatomic homonuclear molecule interacting with an offresonant laser field is obtained. Besides the coherent driving of twophoton induced rotational Raman transitions with an appropriately chosen laser pulse, also the effects due to spontaneous processes are taken into account. The latter are spontaneous rotational Raman transitions that lead to a decoherence in the molecular rotational quantum state.
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Brandt, Howard E.
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In honor of the centennial of Eugene Wigner’s birth, a possible interpretation is given of the density matrix appearing in his classic paper, “Remarks on the MindBody Question”.
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Scala, M.; Militello, B.; Messina, A.
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New physical effects in the dynamics of an ion confined in an anisotropic twodimensional Paul trap are reported. The link between the occurrence of such manifestations and the accumulation of geometric phase stemming from the intrinsic or controlled lack of symmetry in the trap is brought to light. The possibility of observing in laboratory these anisotropybased phenomena is briefly discussed.
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Man’ko, Margarita A.; Nicola, Sergio; Fedele, Renato; Man’ko, Vladimir I.
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The description of photon quantum states by means of probabilitydistribution functions (tomograms) of three different kinds (optical, symplectic and Fresnel ones) is presented. Mutual relations between the optical, symplectic and Fresnel tomograms are established. Evolution equation for states of BoseEinstein condensate (GrossPitaevskii nonlinear equation) is given in the tomographicprobability representation. Entropy of solitons related to the Shannon entropy of the tomographicprobability representation is considered.
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Kurucz, Z.; Adam, P.; Janszky, J.
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Exact deterministic remote state preparation schemes that involve projective measurements on Alice’s side are not able to prepare arbitrary states but a restricted ensemble of states only. Instead of restoring the output state, Bob can transform his future measuring devices, and he can get the same probability amplitudes as with the original state. We show that such a simulation of measurement statistics is not possible for arbitrary states.
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Gawlik, W.; Łobodziński, B.; Adam, P.; Karpati, A.; Janszky, J.
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It is shown that stochastic perturbation can create phase correlation in a coherently driven twolevel system. This correlation results in a noiseinduced interference in the twolevel system. One possible manifestation of the described interference is a narrow structure in resonance fluorescence spectra. Theoretical interpretation is well confirmed by preliminary experimental results.
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