Improved transfer of quantum information using a local memory

Details Improved transfer of quantum information using a local memory Improved transfer of quantum information using a local memory

2005-08-02

arxiv.org/abs/quant-ph/0508022v2

Phys. Rev. Lett. 96, 030501 (2006)

Physics

Quantum Physics

4 pages, 1 figure; added references to homogenization and asymptotic completeness

Scientific paper

10.1103/PhysRevLett.96.030501

We demonstrate that the quantum communication between two parties can be significantly improved if the receiver is allowed to store the received signals in a quantum memory before decoding them. In the limit of an infinite memory, the transfer is perfect. We prove that this scheme allows the transfer of arbitrary multipartite states along Heisenberg chains of spin-1/2 particles with random coupling strengths.

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