0304035v1

related topics
{alice, bob, state}
{key, protocol, security}
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{states, state, optimal}
{measurement, state, measurements}
{energy, state, states}
{cos, sin, state}
{observables, space, algebra}
{group, space, representation}
{vol, operators, histories}

Quantum cryptography with continuous alphabet

D. V. Sych, B. A. Grishanin, V. N. Zadkov

abstract: A new quantum cryptography protocol, based on all unselected states of a qubit as a sort of alphabet with continuous set of letters, is proposed. Its effectiveness is calculated and shown to be essentially higher than those of the other known protocols.

oai_identifier:
oai:arXiv.org:quant-ph/0304035
categories:
quant-ph
comments:
14 pages, 3 figures, RevTeX, submitted to J. Optics B: Quantum and Semiclassical Optics (special issue to follow the IQEC-2002)
arxiv_id:
quant-ph/0304035
created:
2003-04-04

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