Schrödinger’s Cat and Quantum Decoherence

S. Haroche, M. Brune, J. M. Raimond

Simanshu Kumar, Nandan S Bisht

This study lights on the phenomenon of quantum decoherence when Biphoton and Schrödinger cat states are evolve. The primary focus of the work is to explore and analyze the phenomenon of decoherence by virtue of the insightful representations on the way of deriving the Wigner function for the considered states. A crucial aspect of this work involves shedding light on the behaviour of Biphoton and Schrödinger cat states with the same spatial modes and similar theoretical tomography. By considering the influence of an external environment, we further extend our exploration of decoherence, aiming to understand how environment as a factor, impact the stability and coherence of these quantum states.

Jeffrey Bub

M. J. Everitt, William J. Munro, Timothy P. Spiller

In addition to being a very interesting quantum phenomenon, Schr\"odinger-cat-state swapping has the potential for application in the preparation of quantum states that could be used in metrology and other quantum processing. We study in detail the effects of field decoherence on a Schr\"odinger-cat-state-swapping system comprising a set of identical qubits, or spins, all coupled to a field mode. We demonstrate that increasing the number of spins actually mitigates the effects of field decoherence on the collapse and revival of a spin Schr\"odinger-cat state, which could be of significant utility in quantum metrology and other quantum processing.

Bernulf Kanitscheider

K. Kong Wan, David Menzies