Please use this identifier to cite or link to this item:
http://hdl.handle.net/2440/105584
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Type: | Journal article |
Title: | Memory-enhanced noiseless cross-phase modulation |
Author: | Hosseini, M. Rebić, S. Sparkes, B. Twamley, J. Buchler, B. Lam, P. |
Citation: | Light: Science and Applications, 2012; 1(DECEMBER):e40-1-e40-5 |
Publisher: | Nature Publishing Group |
Issue Date: | 2012 |
ISSN: | 2047-7538 2047-7538 |
Statement of Responsibility: | Mahdi Hosseini, Stojan Rebic, Ben M Sparkes, Jason Twamley, Ben C Buchler and Ping K Lam |
Abstract: | Large 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. |
Keywords: | CNOT gate; cross-phase modulation; electromagnetically induced transparency; parity gate; quantum memory |
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:// creativecommons.org/licenses/by-nc-nd/3.0 |
RMID: | 0030068490 |
DOI: | 10.1038/lsa.2012.40 |
Grant ID: | http://purl.org/au-research/grants/arc/CE1101027 http://purl.org/au-research/grants/arc/CE1101013 |
Appears in Collections: | Physics publications |
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hdl_105584.pdf | Published version | 1 MB | Adobe PDF | View/Open |
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