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Trapped Ion Quantum Computing Superconducting Qubits

Realization of a Λ system with metastable states of a capacitively-shunted fluxonium

arXiv
Authors: Nathan Earnest, Srivatsan Chakram, Yao Lu, Nicholas Irons, Ravi K. Naik, Nelson Leung, Leo Ocola, David A. Czaplewski, Brian Baker, Jay Lawrence, Jens Koch, David I. Schuster

Year

2017

Paper ID

44845

Status

Preprint

Abstract Read

~2 min

Abstract Words

84

Citations

N/A

Abstract

We realize a Λ system in a superconducting circuit, with metastable states exhibiting lifetimes up to 8\,ms. We exponentially suppress the tunneling matrix elements involved in spontaneous energy relaxation by creating a "heavy" fluxonium, realized by adding a capacitive shunt to the original circuit design. The device allows for both cavity-assisted and direct fluorescent readout, as well as state preparation schemes akin to optical pumping. Since direct transitions between the metastable states are strongly suppressed, we utilize Raman transitions for coherent manipulation of the states.

Why This Paper Matters

  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
  • It adds a 2017 reference point for readers tracking recent quantum research.
  • We realize a Λ system in a superconducting circuit, with metastable states exhibiting lifetimes up to 8,ms.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1707.00656 [2] arXiv https://arxiv.org/abs/1707.00656 [3] Publisher https://arxiv.org/abs/1707.00656

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