Properties of multi-partite dark states

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dc.creatorKok, Pieter
dc.creatorNemoto, Kae
dc.creatorMunro, William J.
dc.date2002-01-29
dc.date.accessioned2026-07-07T06:03:36Z
dc.date.available2026-07-07T06:03:36Z
dc.descriptionWe investigate and define dark and semi-dark states for multiple qudit systems. For two-level systems, semi-dark and dark states are equivalent. We show that the semi-dark states are equivalent to the singlet states of the rotation group. They exist for many multiple qudit systems, whereas dark states are quite rare. We then show that when a dark state is collapsed onto another dark state of fewer parties, the resulting state is again dark. Furthermore, one can use two orthogonal multi-qudit dark states to construct a decoherence-free qudit.
dc.description5 pages, Revtex4
dc.identifierhttps://arxiv.org/abs/quant-ph/0201138
dc.identifierhttp://arxiv.org/abs/quant-ph/0201138
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/90004
dc.subjectQuantum Physics
dc.titleProperties of multi-partite dark states
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