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Cross-talk compensation in quantum processing devices

  • US 10,452,991 B1
  • Filed: 08/24/2018
  • Issued: 10/22/2019
  • Est. Priority Date: 08/24/2018
  • Status: Active Grant
First Claim
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1. A method of operating a quantum processing device comprising at least two quantum circuits coupled to a tunable coupler,wherein the quantum circuits are subject to cross-talk, the method comprising:

  • applying a primary signal to the quantum circuits so as to drive one or more energy transitions between states spanned by the quantum circuits; and

    applying a compensation signal to the tunable coupler, the compensation signal designed so as to shift at least one state spanned by the quantum circuits, in energy, to compensate for cross-talk between the quantum circuits, andwherein the cross-talk between the quantum circuits gives rise to hybridized states of the quantum circuits and the compensation signal is designed such that one of the hybridized states has an energy equal to an energy that one of the bare superposition state spanned by the quantum circuits would have in absence of cross-talk between the quantum circuits.

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