Wei-Bo Gao et al 2008 New J. Phys. 10 055003 doi:10.1088/1367-2630/10/5/055003
A proof-of-principle experiment of eliminating photon-loss errors in cluster states
Focus on Measurement-Based Quantum Information ProcessingWei-Bo Gao1, Xiao-Qi Zhou1, Jin Zhang1, Tao Yang1 and Jian-Wei Pan1,2,3
Show affiliationsPart of Focus on Measurement-Based Quantum Information Processing
Quantum computation can be efficiently achieved by adopting the cluster-state model in principle, that is, first preparing multi-qubit cluster states and then performing single-qubit measurements. One problem encountered in this model is that qubits are easily lost, leaving the remaining qubits in a mixed state. Here, we experimentally demonstrate a simple way to eliminate such errors in one-dimensional cluster states using the polarizing beam splitter (PBS) gate, and we also perform the indirect-Z measurement to overcome qubit loss. The methods of quantum state tomography and entanglement witness are exploited to verify the performance of the schemes, and the experimental results indicate good agreement with the theoretical predictions.
- PACS
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03.67.Lx Quantum computation architectures and implementations
- Subjects
- Dates
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Issue 5 (May 2008)
Received 9 May 2007
Published 20 May 2008
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A proof-of-principle experiment of eliminating photon-loss errors in cluster states
Wei-Bo Gao et al 2008 New J. Phys. 10 055003
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