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Numerical Analysis of Parametric Downconversion

  • Parametric downconversion (PDC) is a popular technique to produce twin beams of photons that are entangled in multiple degrees of freedom. The generated states form the basis for numerous applications that require entanglement. An exact quantification of this resource is therefore essential, for instance for quantum cryptography that relies on a complete knowledge of the correlation contained in the state. While the determination of an entanglement monotone for the PDC process is only possible analytically in special cases, an exact calculation must usually be performed numerically. Recent work by Mikhailova et al. [2] analyses a certain class of PDC states for which the concurrence entanglement measure can be obtained by an analytical approximation. In this contribution, we analyse the validity of the approximation by comparison with exact numerical methods.

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Metadaten
Author:Wolfgang MauererORCiDGND, Christine SilberhornORCiDGND
DOI:https://doi.org/10.1063/1.3131312
Parent Title (English):AIP Conference Proceedings
Publisher:AIP Publishing
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2009
Release Date:2022/05/10
Volume:1110
Issue:1
Article Number:220
Konferenzangabe:Proc. 8th Int. Conf. on Quantum Comm., Meas. and Comp., Calgary, Kanada (2008)
Institutes:Fakultät Informatik und Mathematik
Fakultät Informatik und Mathematik / Labor für Digitalisierung (LFD)
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Digitalisierung
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG