Entanglement Trapping in Structured Environments

Details Entanglement Trapping in Structured Environments Entanglement Trapping in Structured Environments

2008-05-20

arxiv.org/abs/0805.3056v1

Physical Review A (Rapid Communication) 78, 060302(R) (2008)

Physics

Quantum Physics

4 pages, 3 figures, submitted to Phys. Rev. Lett. on Friday 16 May 2008

Scientific paper

10.1103/PhysRevA.78.060302

The entanglement dynamics of two independent qubits each embedded in a structured environment under conditions of inhibition of spontaneous emission is analyzed, showing entanglement trapping. We demonstrate that entanglement trapping can be used efficiently to prevent entanglement sudden death. For the case of realistic photonic band-gap materials, we show that high values of entanglement trapping can be achieved. This result is of both fundamental and applicative interest since it provides a physical situation where the entanglement can be preserved and manipulated, e.g. by Stark-shifting the qubit transition frequency outside and inside the gap.

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