0412083v1

related topics
{information, entropy, channel}
{vol, operators, histories}
{measurement, state, measurements}
{observables, space, algebra}
{state, states, entangled}
{algorithm, log, probability}
{let, theorem, proof}

Entropic uncertainty relations for incomplete sets of mutually unbiased observables

Adam Azarchs

abstract: Entropic uncertainty relations, based on sums of entropies of probability distributions arising from different measurements on a given pure state, can be seen as a generalization of the Heisenberg uncertainty relation that is in many cases a more useful way to quantify incompatibility between observables. Of particular interest are relationships between `mutually unbiased' observables, which are maximally incompatible. Lower bounds on the sum of entropies for sets of two such observables, and for complete sets of observables within a space of given dimension, have been found. This paper explores relations in the intermediate regime of large, but far from complete, sets of unbiased observables.

oai_identifier:
oai:arXiv.org:quant-ph/0412083
categories:
quant-ph
comments:
4 pages, 1 figure
arxiv_id:
quant-ph/0412083
created:
2004-12-10

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