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Bandwidth enhancement methods of telecom-region entangled twin photons via quasi-phase-matched spontaneous parametric down-conversion
KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.
KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.
KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.
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2006 (English)In: Journal of nonlinear optical physics and materials, ISSN 0218-8635, Vol. 15, no 4, 513-521 p.Article in journal (Refereed) Published
Abstract [en]

We theoretically present the bandwidth enhancement methods of the telecom-region entangled twin photons generated by quasi-phase-matched (QPM) spontaneous parametric down-conversion (SPDC) in periodically poled lithium niobate (PPLN) crystals. By using type I (e --> e + e) SPDC, the degenerate entangled twin photons will have a broad bandwidth and it can be further enhanced by shortening the crystal length, detuning the pump wavelength or adjusting the working temperature of the PPLN crystal. This principle provides the possibility to introduce wavelength-division-multiplexed technique into quantum information systems.

Place, publisher, year, edition, pages
2006. Vol. 15, no 4, 513-521 p.
Keyword [en]
entangled twin photons, spontaneous parametric down-conversion, quasi-phase matching, bandwidth enhancement
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-37521DOI: 10.1142/S0218863506003499ISI: 000244974100010Scopus ID: 2-s2.0-33846974406OAI: oai:DiVA.org:kth-37521DiVA: diva2:434189
Available from: 2011-08-12 Created: 2011-08-12 Last updated: 2017-12-08Bibliographically approved

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Gao, ShimingChen, DaruQin, ShanGao, Ying
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