Published in

National Academy of Sciences, Proceedings of the National Academy of Sciences, 32(105), p. 11050-11054, 2008

DOI: 10.1073/pnas.0800740105

Links

Tools

Export citation

Search in Google Scholar

Experimental quantum coding against qubit loss error

Journal article published in 2008 by Chao-Yang Lu, Wei-Bo Gao ORCID, Jin Zhang, Xiao-Qi Zhou, Tao Yang, Jian-Wei Pan
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Red circle
Preprint: archiving forbidden
Green circle
Postprint: archiving allowed
Upload
Red circle
Published version: archiving forbidden
Policy details
Data provided by SHERPA/RoMEO

Abstract

The fundamental unit for quantum computing is the qubit, an isolated, controllable two-level system. However, for many proposed quantum computer architectures, especially photonic systems, the qubits can be lost or can leak out of the desired two-level systems, posing a significant obstacle for practical quantum computation. Here, we experimentally demonstrate, both in the quantum circuit model and in the one-way quantum computer model, the smallest nontrivial quantum codes to tackle this problem. In the experiment, we encode single-qubit input states into highly entangled multiparticle code words, and we test their ability to protect encoded quantum information from detected 1-qubit loss error. Our results prove in-principle the feasibility of overcoming the qubit loss error by quantum codes.