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arXiv · 0804.2268

Experimental quantum coding against photon loss error

Chao-Yang Lu·Wei-Bo Gao·Jin Zhang·Xiao-Qi Zhou·Tao Yang·Jian-Wei Pan
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Abstract

A significant obstacle for practical quantum computation is the loss of physical qubits in quantum computers, a decoherence mechanism most notably in optical systems. Here we experimentally demonstrate, both in the quantum circuit model and in the one-way quantum computer model, the smallest non-trivial quantum codes to tackle this problem. In the experiment, we encode single-qubit input states into highly-entangled multiparticle codewords, and we test their ability to protect encoded quantum information from detected one-qubit loss error. Our results prove the in-principle feasibility of overcoming the qubit loss error by quantum codes.

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Chao-Yang Lu, Wei-Bo Gao, Jin Zhang, Xiao-Qi Zhou, Tao Yang, Jian-Wei Pan. 2008-04-14. Experimental quantum coding against photon loss error. https://doi.org/10.1073/pnas.0800740105

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