DPG Phi
Verhandlungen
Verhandlungen
DPG

Hannover 2010 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

Q: Fachverband Quantenoptik und Photonik

Q 25: Quantum Information: Quantum Communication I

Q 25.3: Talk

Wednesday, March 10, 2010, 11:00–11:15, E 214

Entanglement properties of optical coherent states under amplitude damping — •Ricardo Wickert1,2, Nadja Kolb Bernardes1,2, and Peter van Loock1,21Optical Quantum Information Theory Group, Max Planck Institute for the Science of Light — 2Institute of Theoretical Physics I, Universität Erlangen-Nürnberg

Quantum Error Correction (QEC) codes aim to protect the information in fragile quantum states by encoding them into a larger Hilbert space; Entanglement Purification (EP) protocols aim to distill higher entanglement from a number of identically prepared copies of lower entanglement. It is known that QEC codes can be recast as EP schemes and vice-versa [1]. Through concurrence, we characterize the distillation capabilities of a known error correcting code for the amplitude damping channel [2]. An upper bound is established considering the non-orthogonality of the coherent-state basis [3].

[1] C. Bennett et al., Phys. Rev. A 54, 3824 (1996)

[2] S. Glancy et al., Phys. Rev. A 70, 22317 (2004)

[3] R. Wickert at al., in preparation (2009)

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2010 > Hannover