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dc.contributor.authorHosseini, M.en
dc.contributor.authorRebić, S.en
dc.contributor.authorSparkes, B.en
dc.contributor.authorTwamley, J.en
dc.contributor.authorBuchler, B.en
dc.contributor.authorLam, P.en
dc.identifier.citationLight: Science and Applications, 2012; 1(DECEMBER):e40-1-e40-5en
dc.description.abstractLarge nonlinearity at the single-photon level can pave the way for the implementation of universal quantum gates. However, realizing large and noiseless nonlinearity at such low light levels has been a great challenge for scientists in the past decade. Here, we propose a scheme that enables substantial nonlinear interaction between two light fields that are both stored in an atomic memory. Semiclassical and quantum simulations demonstrate the feasibility of achieving large cross-phase modulation (XPM) down to the single-photon level. The proposed scheme can be used to implement parity gates from which CNOT gates can be constructed. Furthermore, we present a proof of principle experimental demonstration of XPM between two optical pulses: one stored and one freely propagating through the memory medium.en
dc.description.statementofresponsibilityMahdi Hosseini, Stojan Rebic, Ben M Sparkes, Jason Twamley, Ben C Buchler and Ping K Lamen
dc.publisherNature Publishing Groupen
dc.rights© 2012 CIOMP. All rights reserved. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivative Works 3.0 Unported License. To view a copy of this license, visit http://
dc.subjectCNOT gate; cross-phase modulation; electromagnetically induced transparency; parity gate; quantum memoryen
dc.titleMemory-enhanced noiseless cross-phase modulationen
dc.typeJournal articleen
pubs.library.collectionPhysics publicationsen
dc.identifier.orcidSparkes, B. [0000-0002-9370-2006]en
Appears in Collections:Physics publications

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