Storage and long-distance distribution of telecommunications-band polarization entanglement generated in an optical fiber

Xiaoying Li*, Paul L. Voss, Jun Chen, Jay E. Sharping, Prem Kumar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

We demonstrate storage of polarization-entangled photons for 125 μs, a record storage time to date, in a 25-km-long fiber spool, using a telecommunications-band fiber-based source of entanglement. With this source we also demonstrate distribution of polarization entanglement over 50 km by separating the two photons of an entangled pair and transmitting them individually over separate 25-km fibers. The measured two-photon fringe visibilities were 82% in the storage experiment and 86% in the distribution experiment. Preservation of polarization entanglement over such long-distance transmission demonstrates the viability of all-fiber sources for use in quantum memories and quantum logic gates.

Original languageEnglish (US)
Pages (from-to)1201-1203
Number of pages3
JournalOptics Letters
Volume30
Issue number10
DOIs
StatePublished - May 15 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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