Decoherence and entanglement degradation of a qubit-qutrit system in non-inertial frames

Details Decoherence and entanglement degradation of a qubit-qutrit system in non-inertial frames Decoherence and entanglement degradation of a qubit-qutrit system in non-inertial frames

2011-01-20

arxiv.org/abs/1101.3986v1

Quant. Inf. Process. 11, 443 (2012)

Physics

Quantum Physics

16 pages, 5 .eps figures, 1 table; Quantum Information Processing, published online, 5 July, 2011

Scientific paper

10.1007/s11128-011-0257-7

We study the effect of decoherence on a qubit-qutrit system under the influence of global, local and multilocal decoherence in non-inertial frames. We show that the entanglement sudden death can be avoided in non-inertial frames in the presence of amplitude damping, depolarizing and phase damping channels. However, degradation of entanglement is seen due to Unruh effect. It is shown that for lower level of decoherence, the depolarizing channel degrades the entanglement more heavily as compared to the amplitude damping and phase damping channels. However, for higher values of decoherence parameters, amplitude damping channel heavily degrades the entanglement of the hybrid system. Further more, no ESD is seen for any value of Rob's acceleration.

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