2015
DOI: 10.1103/physrevb.91.104522
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Strong effects of weak ac driving in short superconducting junctions

Abstract: We study a short multichannel superconducting junction subject to dc and ac phase biases. The ac modulation changes the occupation of the Andreev bound states formed at the constriction by transitions between bound states and the continuum. In a short junction, the nonequilibrium Andreev bound-state population may relax through processes that conserve parity of the occupation number on the same bound state and processes that do not conserve it. We argue that the parity-conserving processes occur on a much fast… Show more

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Cited by 4 publications
(2 citation statements)
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“…A resistance R accounts for a finite damping on this resonator. ABS [77][78][79][80][81] and a short topological junction 82 .…”
Section: Introductionmentioning
confidence: 99%
“…A resistance R accounts for a finite damping on this resonator. ABS [77][78][79][80][81] and a short topological junction 82 .…”
Section: Introductionmentioning
confidence: 99%
“…We show that for the dynamical parity selection to occur, weak links of intermediate length (harboring at least two ABSs) are needed. While the case of short weak links (with a single ABS) is well understood [34][35][36][37][38], our theory describes the parity dynamics in superconducting weak links of arbitrary length. Focusing on the simplest nontrivial case with two ABSs, we arrive at an intuitive physical picture which identifies wide parameter regimes suitable for dynamical parity selection and thus for coherent qubit manipulation.…”
Section: Introductionmentioning
confidence: 99%