Practical quantum repeaters with parametric down-conversion sources

Hari Krovi, Saikat Guha, Zachary Dutton, Joshua A. Slater, Christoph Simon, Wolfgang Tittel

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


Conventional wisdom suggests that realistic quantum repeaters will require quasi-deterministic sources of entangled photon pairs. In contrast, we here study a quantum repeater architecture that uses simple parametric down-conversion sources, as well as frequency-multiplexed multimode quantum memories and photon-number-resolving detectors. We show that this approach can significantly extend quantum communication distances compared to direct transmission. This shows that important trade-offs are possible between the different components of quantum repeater architectures.

Original languageEnglish (US)
Article number52
JournalApplied Physics B: Lasers and Optics
Issue number3
StatePublished - Mar 1 2016

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)


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