Acoustic spectral hole-burning in a two-level system ensemble

Abstract

Microscopic two-level system (TLS) defects at dielectric surfaces and interfaces are among the dominant sources of loss in superconducting quantum circuits, and their properties have been extensively probed using superconducting resonators and qubits. We report on spectroscopy of TLSs coupling to the strain field in a surface acoustic wave (SAW) resonator. The narrow free spectral range of the resonator allows for two-tone spectroscopy where a strong pump is applied at one resonance while a weak signal is used to probe a different mode. We map the spectral hole burnt by the pump tone as a function of frequency and extract parameters of the TLS ensemble. Our results suggest that detuned acoustic pumping can be used to enhance the coherence of superconducting devices by saturating TLSs.

References in corpus (6)

• Propagating phonons coupled to an artificial atom
• Experimental evidence for a surface distribution of two-level systems in superconducting lithographed microwave resonators
• Decoherence benchmarking of superconducting qubits
• Observation of directly interacting coherent two-level systems in a solid
• Generalized Tunneling Model for TLS in amorphous materials and its predictions for their dephasing and the noise in superconducting microresonators
• Interaction of two level systems in amorphous materials with arbitrary phonon fields

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