Realization of logically labeled effective pure states for bulk quantum computation

Details Realization of logically labeled effective pure states for bulk quantum computation Realization of logically labeled effective pure states for bulk quantum computation

1999-05-12

arxiv.org/abs/quant-ph/9905041v2

Phys.Rev.Lett.83:3085,1999

Physics

Quantum Physics

PRL 83, 3085 (1999). Small changes made to improve readability and remove ambiguities

Scientific paper

10.1103/PhysRevLett.83.3085

We report the first use of "logical labeling" to perform a quantum computation with a room-temperature bulk system. This method entails the selection of a subsystem which behaves as if it were at zero temperature - except for a decrease in signal strength - conditioned upon the state of the remaining system. No averaging over differently prepared molecules is required. In order to test this concept, we execute a quantum search algorithm in a subspace of two nuclear spins, labeled by a third spin, using solution nuclear magnetic resonance (NMR), and employing a novel choice of reference frame to uncouple nuclei.

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