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Trapped Ion Quantum Computing

Entanglement distillation by dissipation and continuous quantum repeaters

arXiv

Authors: Karl Gerd H. Vollbrecht, Christine A. Muschik, J. Ignacio Cirac

Year

2010

Paper ID

10365

Status

Preprint

Abstract Read

~2 min

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Abstract

Even though entanglement is very vulnerable to interactions with the environment, it can be created by purely dissipative processes. Yet, the attainable degree of entanglement is profoundly limited in the presence of noise sources. We show that distillation can also be realized dissipatively, such that a highly entanglement steady state is obtained. The schemes put forward here display counterintuitive phenomena, such as improved performance if noise is added to the system. We also show how dissipative distillation can be employed in a continuous quantum repeater architecture, in which the resources scale polynomially with the distance.

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Even though entanglement is very vulnerable to interactions with the environment, it can be created by purely dissipative processes.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1011.4115 [2] arXiv https://arxiv.org/abs/1011.4115 [3] Publisher https://arxiv.org/abs/1011.4115

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