0406027v1

related topics
{trap, ion, state}
{measurement, state, measurements}
{spin, pulse, spins}
{level, atom, field}
{light, field, probe}
{time, wave, function}
{photon, photons, single}
{particle, mechanics, theory}

A relaxationless demonstration of the Quantum Zeno Paradox on an individual atom

Chr. Balzer, Th. Hannemann, D. Rei\ss, Chr. Wunderlich, W. Neuhauser, P. E. Toschek

abstract: The driven evolution of the spin of an individual atomic ion on the ground-state hyperfine resonance is impeded by the observation of the ion in one of the pertaining eigenstates. Detection of resonantly scattered light identifies the ion in its upper ``bright'' state. The lower ``dark'' ion state is free of relaxation and correlated with the detector by a null signal. Null events represent the straightforward demonstration of the quantum Zeno paradox. Also, high probability of survival was demonstrated when the ion, driven by a fractionated $\pi $ pulse, was probed {\em and monitored} during the intermissions of the drive, such that the ion's evolution is completely documented.

oai_identifier:
oai:arXiv.org:quant-ph/0406027
categories:
quant-ph
comments:
7 pages
doi:
10.1016/S0030-4018(02)01859-X
arxiv_id:
quant-ph/0406027
journal_ref:
Optics Communications Vol. 211, 235-241 (2002)
created:
2004-06-04

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