Demonstration of Quantum Error Correction using Linear Optics

Abstract

We describe a laboratory demonstration of a quantum error correction procedure that can correct intrinsic measurement errors in linear-optics quantum gates. The procedure involves a two-qubit encoding and fast feed-forward-controlled single-qubit operations. In our demonstration the qubits were represented by the polarization states of two single-photons from a parametric down-conversion source, and the real-time feed-forward control was implemented using an electro-optic device triggered by the output of single-photon detectors.

5 pages, 3 figures; v2 has updated references

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• Experimental Quantum Error-Free Transmission
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• Optimal Control of Finite Dimensional Quantum Systems