dorsal/arxiv
View SchemaProperties of multi-partite dark states
| Authors | Pieter Kok, Kae Nemoto, William J. Munro |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0201138 |
| URL | https://arxiv.org/abs/quant-ph/0201138 |
Abstract
We 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.
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"abstract": "We investigate and define dark and semi-dark states for multiple qudit\nsystems. For two-level systems, semi-dark and dark states are equivalent. We\nshow that the semi-dark states are equivalent to the singlet states of the\nrotation group. They exist for many multiple qudit systems, whereas dark states\nare quite rare. We then show that when a dark state is collapsed onto another\ndark state of fewer parties, the resulting state is again dark. Furthermore,\none can use two orthogonal multi-qudit dark states to construct a\ndecoherence-free qudit.",
"arxiv_id": "quant-ph/0201138",
"authors": [
"Pieter Kok",
"Kae Nemoto",
"William J. Munro"
],
"categories": [
"quant-ph"
],
"title": "Properties of multi-partite dark states",
"url": "https://arxiv.org/abs/quant-ph/0201138"
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