Sensitivity enhancement in superconducting-qubit magnetometry via two-level systems

Author(s): Azat Gubaydullin, Vladimir Slepnev, Valerii Vinokur, and Florian NeukartWe study quantum magnetometry based on phase-estimation algorithms in a sensor formed by a superconducting qubit coupled to a two-level system (TLS). Using Ramsey interferometry with single-shot binary readout, we con…

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