Quantum coherence control of solid-state charge qubit by means of a suboptimal feedback algorithm
- 2 June 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 73 (23), 233302
- https://doi.org/10.1103/physrevb.73.233302
Abstract
The quantum coherence control of a solid-state charge qubit is studied by using a suboptimal continuous feedback algorithm within the Bayesian feedback scheme. For the coherent Rabi oscillation, the present algorithm suggests a simple bang-bang control protocol, in which the control parameter is modulated between two values. For the coherence protection of the idle state, the present approach is applicable to arbitrary states, including those lying on the equator of the Bloch sphere which are out of control in the previous Markovian feedback scheme.Keywords
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