Creating Bell states and decoherence effects in quantum dots system

Details Creating Bell states and decoherence effects in quantum dots system Creating Bell states and decoherence effects in quantum dots system

2000-11-14

arxiv.org/abs/quant-ph/0011058v2

Phys. Rev. A, 63(2001)062307.

Physics

Quantum Physics

4 pages, 2figures, corrected some typos

Scientific paper

10.1103/PhysRevA.63.062307

We show how to improve the efficiency for preparing Bell states in coupled two quantum dots system. A measurement to the state of driven quantum laser field leads to wave function collapse. This results in highly efficiency preparation of Bell states. The effect of decoherence on the efficiency of generating Bell states is also discussed in this paper. The results show that the decoherence does not affect the relative weight of $|00>$ and $|11>$ in the output state, but the efficiency of finding Bell states.

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