Entanglement-induced two-photon transparency

H B Fei, B M Jost, S Popescu, B E A Saleh, M C Teich

Research output: Contribution to journalArticle (Academic Journal)peer-review


The rate of absorption of entangled photon pairs is linear in the photon-flux density. We demonstrate that the two-photon absorption cross section :is a nonmonotonic function of the entanglement time; it vanishes for certain energy-level configurations and values of the: entanglement time. This entanglement-induced two-photon transparency arises from the coherent summation of transition-amplitude contributions over the finite entanglement time. As an example, the entangled two-photon cross section for the 1S-2S electronic transition in atomic hydrogen is obtained.

Translated title of the contributionEntanglement induced two-photon transparency
Original languageEnglish
Pages (from-to)1679-1682
Number of pages4
JournalPhysical Review Letters
Issue number9
Publication statusPublished - 3 Mar 1997


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