Nanotechnology White Papers
Properties of Multi-partite Dark States
Overview 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. Also one can use two orthogonal multi-qudit dark states to construct a decoherence-free qudit.
| Publisher | HP Labs | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | March 2002 | Downloads | 134 |
| Format | White Papers | ||
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