Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/15014
Title: Tomographic quantum cryptography with bell diagonal states
Authors: LIM JENN YANG
Keywords: quantum cryptography, tomographic, bell diagonal states, semiconductor single photon source, advantage distillation, coherent attack
Issue Date: 10-Oct-2005
Source: LIM JENN YANG (2005-10-10). Tomographic quantum cryptography with bell diagonal states. ScholarBank@NUS Repository.
Abstract: In the first part of the thesis, a generalized version of the Tomographic Quantum Key Distribution protocol in which the two users Alice and Bob share a Bell diagonal mixed state of two qubits will be presented and its security analyzed. In particular, it will be shown that if an eavesdropper performs a coherent measurement on a number of ancilla states simultaneously, classical methods of secure key distillation are less effective than quantum distillation protocols. Furthermore, certain classes of Bell diagonal states that are resistant to eavesdropping attacks will be identified.In the second part of this thesis, the security of the tomographic protocol using a source which produces entangled photons via an experimental scheme proposed in Phys. Rev. Lett. 92, 37903 (2004) will be analyzed. The range of experimental parameters for which the protocol is secure will be determined.
URI: http://scholarbank.nus.edu.sg/handle/10635/15014
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
thesis.pdf708.89 kBAdobe PDF

OPEN

NoneView/Download

Page view(s)

231
checked on Dec 11, 2017

Download(s)

126
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.