Tomographic quantum cryptography

Yeong Cherng Liang; Dagomir Kaszlikowski; Berthold Georg Englert; Leong Chuan Kwek; C. H. Oh

doi:10.1103/PhysRevA.68.022324

Tomographic quantum cryptography

Yeong Cherng Liang, Dagomir Kaszlikowski, Berthold Georg Englert, Leong Chuan Kwek, C. H. Oh

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We present a protocol for quantum cryptography in which the data obtained for mismatched bases are used in full for the purpose of quantum state tomography. Eavesdropping on the quantum channel is seriously impeded by requiring that the outcome of the tomography is consistent with unbiased noise in the channel. We study the incoherent eavesdropping attacks that are still permissible and establish under which conditions a secure cryptographic key can be generated. The whole analysis is carried out for channels that transmit quantum systems of any finite dimension.

Original language	English
Pages (from-to)	9
Number of pages	1
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	68
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevA.68.022324
Publication status	Published - 2003

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

Access to Document

10.1103/PhysRevA.68.022324

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