Coherent information losses between two-qubit pair interacting with an environment
2006 (English)In: Optics Communications, ISSN 0030-4018, E-ISSN 1873-0310, Vol. 257, no 1, 206-215 p.Article in journal (Refereed) Published
We quantify the amount of information exchanged between a system of two qubit pair and the environment. We find that there is a good chance for an Eavesdropper to distill information from the entangled qubits. This chance decreases for less entangled qubits. In particular, we considered two examples: The first is an entangled pure two qubit state and the second an entangled state from two cavities, with a depolarizing channel as an environment. Also the effect of decoherence due to the channel parameter is studied.
Place, publisher, year, edition, pages
2006. Vol. 257, no 1, 206-215 p.
Computer and Information Science
IdentifiersURN: urn:nbn:se:kth:diva-37629DOI: 10.1016/j.optcom.2005.07.025ISI: 000233786700024ScopusID: 2-s2.0-28044447245OAI: oai:DiVA.org:kth-37629DiVA: diva2:434654
QC 201108162011-08-162011-08-152011-08-16Bibliographically approved