Quantum interference: experiments and applications

J G Rarity, P R Tapster

Research output: Contribution to journalArticle (Academic Journal)


We describe the simplest single-photon encoding schemes and introduce the concept of a quantum optical gate. These gates can be used to build up arbitrary entangled states of many initially separate single photons. Experimental realization of such a gate involves the development of nonlinear phase shift elements sensitive at the single quantum level. We report our experimental efforts using linear optical elements and non-classical sources where we are able to demonstrate interference and entanglement of initally separate single-photon pulses.

Original languageEnglish
Pages (from-to)2267-2277
Number of pages11
JournalProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Issue number1733
Publication statusPublished - 15 Dec 1997

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