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Trapped Ion Quantum Computing Superconducting Qubits

Stroboscopic qubit measurement with squeezed illumination

arXiv
Authors: Andrew Eddins, Sydney Schreppler, David M. Toyli, Leigh S. Martin, Shay Hacohen-Gourgy, Luke C. G. Govia, Hugo Ribeiro, Aashish A. Clerk, Irfan Siddiqi

Year

2017

Paper ID

44179

Status

Preprint

Abstract Read

~2 min

Abstract Words

80

Citations

N/A

Abstract

Microwave squeezing represents the ultimate sensitivity frontier for superconducting qubit measurement. However, observation of enhancement has remained elusive, in part because integration with conventional dispersive readout pollutes the signal channel with antisqueezed vacuum. Here we induce a stroboscopic light-matter coupling with superior squeezing compatibility, and observe an increase in the room-temperature signal-to-noise ratio of 24%. Squeezing the orthogonal phase controls measurement backaction, slowing dephasing by a factor of 1.8. This protocol enables the practical use of microwave squeezing for qubit state measurement.

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.
  • Microwave squeezing represents the ultimate sensitivity frontier for superconducting qubit measurement.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1708.01674 [2] arXiv https://arxiv.org/abs/1708.01674 [3] Publisher https://arxiv.org/abs/1708.01674

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