Overcoming decoherence in the collapse and revival of spin Schrödinger-cat states

TY - JOUR

T1 - Overcoming decoherence in the collapse and revival of spin Schrödinger-cat states

AU - Everitt, M. J.

AU - Munro, W. J.

AU - Spiller, T. P.

PY - 2012/2/8

Y1 - 2012/2/8

N2 - In addition to being a very interesting quantum phenomenon, Schrödinger-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 Schrödinger-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 Schrödinger-cat state, which could be of significant utility in quantum metrology and other quantum processing.

AB - In addition to being a very interesting quantum phenomenon, Schrödinger-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 Schrödinger-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 Schrödinger-cat state, which could be of significant utility in quantum metrology and other quantum processing.

UR - http://www.scopus.com/inward/record.url?scp=84856865357&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.85.022113

DO - 10.1103/PhysRevA.85.022113

M3 - Article

AN - SCOPUS:84856865357

SN - 1050-2947

VL - 85

JO - Physical Review A

JF - Physical Review A

IS - 2

M1 - 022113

ER -