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082 | _ | _ | |a 530 |
100 | 1 | _ | |a Viola, Giovanni |0 P:(DE-HGF)0 |b 0 |
245 | _ | _ | |a Collective modes in the fluxonium qubit |
260 | _ | _ | |a College Park, Md. |c 2015 |b APS |
336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1450787944_21626 |2 PUB:(DE-HGF) |
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520 | _ | _ | |a Superconducting qubit designs vary in complexity from single- and few-junction systems, such as the transmon and flux qubits, to the many-junction fluxonium. Here, we consider the question of whether the many degrees of freedom in the fluxonium circuit can limit the qubit coherence time. Such a limitation is in principle possible, due to the interactions between the low-energy, highly anharmonic qubit mode and the higher-energy, weakly anharmonic collective modes. We show that so long as the coupling of the collective modes with the external electromagnetic environment is sufficiently weaker than the qubit-environment coupling, the qubit dephasing induced by the collective modes does not significantly contribute to decoherence. Therefore, the increased complexity of the fluxonium qubit does not constitute by itself a major obstacle for its use in quantum computation architectures. |
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542 | _ | _ | |i 2015-12-21 |2 Crossref |u http://link.aps.org/licenses/aps-default-license |
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700 | 1 | _ | |a Catelani, Gianluigi |0 P:(DE-Juel1)151130 |b 1 |e Corresponding author |u fzj |
773 | 1 | 8 | |a 10.1103/physrevb.92.224511 |b American Physical Society (APS) |d 2015-12-21 |n 22 |p 224511 |3 journal-article |2 Crossref |t Physical Review B |v 92 |y 2015 |x 1098-0121 |
773 | _ | _ | |a 10.1103/PhysRevB.92.224511 |g Vol. 92, no. 22, p. 224511 |0 PERI:(DE-600)2844160-6 |n 22 |p 224511 |t Physical review / B |v 92 |y 2015 |x 1098-0121 |
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