Fluctuation Spectroscopy of Two-Level Systems in Superconducting Resonators
arXiv:2203.07445 · doi:10.1103/PhysRevApplied.18.034009
Abstract
Superconducting quantum computing is experiencing a tremendous growth. Although major milestones have already been achieved, useful quantum-computing applications are hindered by a variety of decoherence phenomena. Decoherence due to two-level systems (TLSs) hosted by amorphous dielectric materials is ubiquitous in planar superconducting devices. We use high-quality quasilumped element resonators as quantum sensors to investigate TLS-induced loss and noise. We perform two-tone experiments with a probe and pump electric field; the pump is applied at different power levels and detunings. We measure and analyze time series of the quality factor and resonance frequency for very long time periods, up to 1000 h. We additionally carry out simulations based on the TLS interacting model in presence of a pump field. We find that loss and noise are reduced at medium and high power, matching the simulations, but not at low power.
arXiv comment20 two-column pages (including App. and Supplement), 12 figures, 3 tables
References in corpus (24)
- Observation of high coherence in Josephson junction qubits measured in a three-dimensional circuit QED architecture
- Coherent Josephson qubit suitable for scalable quantum integrated circuits
- Quantum Simulators: Architectures and Opportunities
- Towards understanding two-level-systems in amorphous solids -- Insights from quantum circuits
- Planar Superconducting Resonators with Internal Quality Factors above One Million
- Fluctuations of Energy-Relaxation Times in Superconducting Qubits
- Decoherence benchmarking of superconducting qubits
- Quantum Computer Systems for Scientific Discovery
- Materials loss measurements using superconducting microwave resonators
- Correlating decoherence in transmon qubits: Low frequency noise by single fluctuators
- Study of loss in superconducting coplanar waveguide resonators
- Evidence for interacting two-level systems from the 1/f noise of a superconducting resonator
- Measurement of the decay of Fock states in a superconducting quantum circuit
- Suppression of 1/f noise in solid state quantum devices by surface spin desorption
- Substrate surface engineering for high-quality silicon/aluminum superconducting resonators
- The Quantum Socket: Three-Dimensional Wiring for Extensible Quantum Computing
- Fluctuations From Edge Defects in Superconducting Resonators
- Electric-field noise from thermally-activated fluctuators in a surface ion trap
- Revealing the nonlinear response of a tunneling two-level system ensemble using coupled modes
- Probing a two-level system bath via the frequency shift of an off-resonantly-driven cavity
- Dynamical Decoupling of Quantum Two-Level Systems by Coherent Multiple Landau-Zener Transitions
- Jaynes Cummings treatment of superconducting resonators with dielectric loss due to two-level systems
- Improving the Time Stability of Superconducting Planar Resonators
- Material matters in superconducting qubits
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- Broadband and high-precision two-level system loss measurement using superconducting multi-wave resonators
- Purity benchmarking study of error coherence in a single Xmon qubit
- Dynamic phases induced by two-level system defects on driven qubits