In an experiment reported recently (Mosley et al 2008 Phys. Rev. Lett. 100 133601), we demonstrated that, through group velocity matched parametric downconversion, heralded single photons can be generated in pure quantum states without spectral filtering. The technique relies on factorable photon pair production, initially developed theoretically in the strict collinear regime; focusing - required in any experimental implementation - can ruin this factorability. Here, we present the numerical...Expand abstract
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- "GR/S82716/01", "EP/C013840/1"
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- Citation: Mosley, P. J., Lundeen, J. S., Smith, B. J. & Walmsley, I. A. (2008). 'Conditional preparation of single photons using parametric downconversion: a recipe for purity', New Journal of Physics, 10(9), 093011. [Available at http://www.njp.org]. This is an Open Access article published under the terms of the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 licence (http://creativecommons.org/licenses/by-nc-sa/2.5/deed.en_GB). This licence permits third-party users to copy, distribute and display the published version of the article, and create derivative works, subject to appropriate acknowledgement of the original authors, and provided the article is not used for commercial purposes. If you alter, transform, or build upon this work, you may distribute the resulting work only under a licence identical to this one. For any reuse or distribution, you must make clear to others the licence terms of this work.
Conditional preparation of single photons using parametric downconversion: a recipe for purity
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