Experimental ancilla-assisted qubit transmission against correlated noise using quantum parity checking

T. Yamamoto, R. Nagase, J. Shimamura, Ş K. Özdemir, M. Koashi, N. Imoto

Research output: Contribution to journalArticlepeer-review

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Abstract

We report the experimental demonstration of a transmission scheme which has the ability to transmit any state of a photonic qubit over unstabilized optical fibres, regardless of whether the qubit is known, unknown, or entangled to other systems. A high fidelity to the noiseless quantum channel was achieved by adding an ancilla photon after the signal photon within the correlation time of the fibre noise and by performing a measurement which computes the parity. Simplicity, the maintenance-free nature and robustness against path-length mismatches among the nodes make our scheme suitable for multi-user quantum communication networks.

Original languageEnglish (US)
Article number191
JournalNew Journal of Physics
Volume9
DOIs
StatePublished - Jun 29 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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