Resonant cancellation of off-resonant effects in a multilevel qubit

Details Resonant cancellation of off-resonant effects in a multilevel qubit Resonant cancellation of off-resonant effects in a multilevel qubit

2000-03-09

arxiv.org/abs/quant-ph/0003034v2

Physics

Quantum Physics

4 pages, Revtex, submitted for publication

Scientific paper

10.1103/PhysRevA.62.050301

Off-resonant effects are a significant source of error in quantum computation. This paper presents a group theoretic proof that off-resonant transitions to the higher levels of a multilevel qubit can be completely prevented in principle. This result can be generalized to prevent unwanted transitions due to qubit-qubit interactions. A simple scheme exploiting dynamic pulse control techniques is presented that can cancel transitions to higher states to arbitrary accuracy.

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