Overcoming decoherence in the collapse and revival of spin Schrödinger cats

Details Overcoming decoherence in the collapse and revival of spin Schrödinger cats Overcoming decoherence in the collapse and revival of spin Schrödinger cats

2011-01-07

arxiv.org/abs/1101.1420v2

Phys. Rev. A 85, 022113 (2012)

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevA.85.022113

In addition to being a very interesting quantum phenomenon, Schr\"odinger cat 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 cat-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, which could be of significant utility in quantum metrology and other quantum processing.

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