Universal dynamical decoupling of multiqubit states from environment
Journal Article
·
· Physical Review. A
- Institute for Quantum Information, California Institute of Technology, Pasadena, California 91125 (United States)
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005,USA (United States)
We study the dynamical decoupling of multiqubit states from environment. For a system of m qubits, the nested Uhrig dynamical decoupling (NUDD) sequence can efficiently suppress generic decoherence induced by the system-environment interaction to order N using (N+1){sup 2m} pulses. We prove that the NUDD sequence is universal, i.e., it can restore the coherence of an m-qubit quantum system independent of the details of the system-environment interaction. We also construct a general mapping between dynamical decoupling problems and discrete quantum walks in certain functional spaces.
- OSTI ID:
- 22095514
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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