# Kinetics of non-equilibrium quasiparticle tunneling in superconducting charge qubits

Source: [Kinetics of non-equilibrium quasiparticle tunneling in superconducting charge qubits](<https://www.sota2.com/research/paper/68fa283b2c2a3760193c7554>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-28T13:52:51.461Z

Authors: M. D. Shaw, R. Lutchyn, P. Delsing, P. M. Echternach

Published: 2008-03-23T21:37:28.000Z

## Abstract

We directly observe low-temperature non-equilibrium quasiparticle tunneling in a pair of charge qubits based on the single Cooper-pair box. We measure even- and odd-state dwell time distributions as a function of temperature, and interpret these results using a kinetic theory. While the even-state lifetime is exponentially distributed, the odd-state distribution is more heavily weighted to short times, implying that odd-to-even tunnel events are not described by a homogenous Poisson process. The mean odd-state dwell time increases sharply at low temperature, which is consistent with quasiparticles tunneling out of the island before reaching thermal equilibrium.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/0803.3102>)

[PDF](<https://arxiv.org/pdf/0803.3102.pdf>)