Quantum spectroscopy of semiconductors with Schr"odinger's cat states

M. Kira, S. W. Koch, Ryan P. Smith +2 more

R. D. Wilson, M. J. Everitt, William J. Munro +1 more

We study the effects of continuous measurement of the field mode during the collapse and revival of spin Schr¨odinger cat states in the Tavis-Cummings model of N qubits (two-level quantum systems) coupled to a field mode. We show that a compromise between relatively weak and relatively strong continuous measurement will not completely destroy the collapse and revival dynamics while still providing enough signal-to-noise resolution to identify the signatures of the process in the measurement record. This type of measurement would in principle allow the verification of the occurrence of the collapse and revival of a spin Schr¨odinger cat state.

M. Kira, Georgios Roumpos, Steven T. Cundiff

Florentin Smarandacheand, Vic Christianto

This article discusses Neutrosophic Logic interpretation of the Schrodinger’s cat paradox. We argue that this paradox involves some degree of indeterminacy (unknown) which Neutrosophic Logic could take into consideration, whereas other methods including Fuzzy Logic could not. For a balanced discussion, other interpretations have also been discussed. 1 Schr¨ odinger equation As already known, Schr¨ odinger equation is the most used equation to describe non-relativistic quantum systems. Its relativistic version was developed by Klein-Gordon and Dirac, but Schr¨

Adam Miranowicz, J. Bajer, Mohamed Ridza Wahiddin +1 more

The Wehrl information entropy and its phase density, the so-called Wehrl phase distribution, are applied to describe Schr\\"odinger cat and cat-like (kitten) states. The advantages of the Wehrl phase distribution over the Wehrl entropy in a description of the superposition principle are presented. The entropic measures are compared with a conventional phase distribution from the Husimi Q-function. Compact-form formulae for the entropic measures are found for superpositions of well-separated states. Examples of Schr\\"odinger cats (including even, odd and Yurke-Stoler coherent states), as well as the cat-like states generated in Kerr medium are analyzed in detail. It is shown that, in contrast to the Wehrl entropy, the Wehrl phase distribution properly distinguishes between different superpositions of unequally-weighted states in respect to their number and phase-space configuration.

M. Kira, S. W. Koch