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Open Quantum Systems Decoherence Superconducting Qubits

Landau-Zener-Stueckelberg physics with a singular continuum of states

arXiv

Authors: D. M. Basko

Year

2016

Paper ID

43763

Status

Preprint

Abstract Read

~2 min

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Abstract

This work addresses the dynamical quantum problem of a driven discrete energy level coupled to a semi-infinite continuum whose density of states has a square-root-type singularity, such as states of a free particle in one dimension or quasiparticle states in a BCS superconductor. The system dynamics is strongly affected by the quantum-mechanical repulsion between the discrete level and the singularity, which gives rise to a bound state, suppresses the decay into the continuum, and can produce Stueckelberg oscillations. This quantum coherence effect may limit the performance of mesoscopic superconducting devices, such as quantum electron turnstile.

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This work addresses the dynamical quantum problem of a driven discrete energy level coupled to a semi-infinite continuum whose density of states has a square-root-type...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1609.01418 [2] arXiv https://arxiv.org/abs/1609.01418 [3] Publisher https://arxiv.org/abs/1609.01418

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