Year: 2011
Type: article
Abstract: 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 ${(N+1)}^{2m}$ 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.
Source: Physical Review A
Authors: Liang Jiang, Adilet Imambekov
Institutions: California Institute of Technology, Rice University
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1989689485