Heralding single photons without spectral factorability

Yu Ping Huang*, Joseph B. Altepeter, Prem Kumar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


Recent efforts to produce single photons via heralding have relied on creating spectrally factorable two-photon states in order to achieve both high purity and high production rate. Through a careful multimode analysis, we find, however, that spectral factorability is not necessary. Utilizing single-mode detection, a similar or better performance can be achieved with nonfactorable states. This conclusion rides on the fact that even when using a broadband filter, a single-mode measurement can still be realized, as long as the coherence time of the triggering photons exceeds the measurement window of the on-off detector.

Original languageEnglish (US)
Article number043826
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number4
StatePublished - Oct 18 2010

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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