Faithful qubit distribution assisted by one additional qubit against collective noise

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

Research output: Contribution to journalArticle

74 Citations (Scopus)

Abstract

We propose a distribution scheme of polarization states of a single photon over a collective-noise channel. By adding one extra photon with a fixed polarization, we can protect the state against collective noise via a parity-check measurement and postselection. While the scheme succeeds only probabilistically, it is simpler and more flexible than the schemes utilizing decoherence-free subspace. An application to the Bennett-Brassard 1984 protocol through a collective-noise channel, which is robust to the Trojan horse attack, is also given.

Original languageEnglish (US)
Article number040503
JournalPhysical Review Letters
Volume95
Issue number4
DOIs
StatePublished - Jul 22 2005

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channel noise
photons
polarization
attack
parity

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Yamamoto, T. ; Shimamura, J. ; Özdemir, Ş K. ; Koashi, M. ; Imoto, N. / Faithful qubit distribution assisted by one additional qubit against collective noise. In: Physical Review Letters. 2005 ; Vol. 95, No. 4.
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Faithful qubit distribution assisted by one additional qubit against collective noise. / Yamamoto, T.; Shimamura, J.; Özdemir, Ş K.; Koashi, M.; Imoto, N.

In: Physical Review Letters, Vol. 95, No. 4, 040503, 22.07.2005.

Research output: Contribution to journalArticle

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