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2015 ; 5
(ä): 18036
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Coherent controlization using superconducting qubits
#MMPMID26667893
Friis N
; Melnikov AA
; Kirchmair G
; Briegel HJ
Sci Rep
2015[Dec]; 5
(ä): 18036
PMID26667893
show ga
Coherent controlization, i.e., coherent conditioning of arbitrary single- or
multi-qubit operations on the state of one or more control qubits, is an
important ingredient for the flexible implementation of many algorithms in
quantum computation. This is of particular significance when certain subroutines
are changing over time or when they are frequently modified, such as in
decision-making algorithms for learning agents. We propose a scheme to realize
coherent controlization for any number of superconducting qubits coupled to a
microwave resonator. For two and three qubits, we present an explicit
construction that is of high relevance for quantum learning agents. We
demonstrate the feasibility of our proposal, taking into account loss, dephasing,
and the cavity self-Kerr effect.