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Trapped Ion Quantum Computing Superconducting Qubits

A superconducting qubit with Purcell protection and tunable coupling

arXiv
Authors: J. M. Gambetta, A. A. Houck, Alexandre Blais

Year

2010

Paper ID

11158

Status

Preprint

Abstract Read

~2 min

Abstract Words

93

Citations

N/A

Abstract

We present a superconducting qubit for the circuit quantum electrodynamics architecture that has a tunable coupling strength g. We show that this coupling strength can be tuned from zero to values that are comparable with other superconducting qubits. At g = 0 the qubit is in a decoherence free subspace with respect to spontaneous emission induced by the Purcell effect. Furthermore we show that in the decoherence free subspace the state of the qubit can still be measured by either a dispersive shift on the resonance frequency of the resonator or by a cycling-type measurement.

Why This Paper Matters

  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
  • It adds a 2010 reference point for readers tracking recent quantum research.
  • We present a superconducting qubit for the circuit quantum electrodynamics architecture that has a tunable coupling strength g.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1009.4470 [2] arXiv https://arxiv.org/abs/1009.4470 [3] Publisher https://arxiv.org/abs/1009.4470

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