Controllable coherent population transfers in superconducting qubits for quantum computing

L. F. Wei, J. R. Johansson, L. X. Cen, Sahel Ashhab, Franco Nori

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

We propose an approach to coherently transfer populations between selected quantum states in one- and two-qubit systems by using controllable Stark-chirped rapid adiabatic passages. These evolution-time insensitive transfers, assisted by easily implementable single-qubit phase-shift operations, could serve as elementary logic gates for quantum computing. Specifically, this proposal could be conveniently demonstrated with existing Josephson phase qubits. Our proposal can find an immediate application in the readout of these qubits. Indeed, the broken parity symmetries of the bound states in these artificial atoms provide an efficient approach to design the required adiabatic pulses.

Original languageEnglish
Article number113601
JournalPhysical Review Letters
Volume100
Issue number11
DOIs
Publication statusPublished - 18 Mar 2008
Externally publishedYes

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quantum computation
Parity
proposals
Population
logic
readout
parity
phase shift
symmetry
pulses
atoms

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Controllable coherent population transfers in superconducting qubits for quantum computing. / Wei, L. F.; Johansson, J. R.; Cen, L. X.; Ashhab, Sahel; Nori, Franco.

In: Physical Review Letters, Vol. 100, No. 11, 113601, 18.03.2008.

Research output: Contribution to journalArticle

Wei, L. F. ; Johansson, J. R. ; Cen, L. X. ; Ashhab, Sahel ; Nori, Franco. / Controllable coherent population transfers in superconducting qubits for quantum computing. In: Physical Review Letters. 2008 ; Vol. 100, No. 11.
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