# Stability of superconducting resonators: Motional narrowing and the role of Landau-Zener driving of two-level defects

@article{Niepce2020StabilityOS, title={Stability of superconducting resonators: Motional narrowing and the role of Landau-Zener driving of two-level defects}, author={David Niepce and Jonathan J Burnett and Marina Kudra and Jared H. Cole and Jonas Bylander}, journal={Science Advances}, year={2020}, volume={7} }

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## 6 Citations

### Fluctuation Spectroscopy of Two-Level Systems in Superconducting Resonators

- PhysicsPhysical Review Applied
- 2022

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…

### Quantifying dynamics and interactions of individual spurious low-energy fluctuators in superconducting circuits

- PhysicsPhysical Review B
- 2021

Understanding the nature and dynamics of material defects in superconducting circuits is of paramount importance for improving qubit coherence and parameter stability and much needed for implementing…

### Identification of different types of high-frequency defects in superconducting qubits

- Physics
- 2021

Parasitic two-level-system (TLS) defects are one of the major factors limiting the coherence times of superconducting qubits. Although there has been signiﬁcant progress in characterizing basic…

### Fast universal control of an oscillator with weak dispersive coupling to a qubit

- PhysicsNature Physics
- 2022

and Full manipulation of a quantum system requires controlled evolution generated by nonlinear interactions, which is coherent when the rate of nonlinearity is large compared with the rate of…

### Feedback stabilization of the resonant frequency in tunable microwave cavities with single-photon occupancy

- Physics
- 2022

We successfully demonstrate low-frequency noise suppression in the resonant frequency ﬂuctuations of a cavity-embedded Cooper pair transistor (cCPT) driven at single-photon occupancy. In particular,…

### Investigation of Microwave Loss Induced by Oxide Regrowth in High- Q Niobium Resonators

- PhysicsPhysical Review Applied
- 2021

The coherence of state-of-the-art superconducting qubit devices is predominantly limited by two-level-system defects, found primarily at amorphous interface layers. Reducing microwave loss from these…

## References

SHOWING 1-10 OF 73 REFERENCES

### Quantum two level systems and kondo-like traps as possible sources of decoherence in superconducting qubits.

- PhysicsPhysical review letters
- 2006

It is found that two level systems in the surrounding insulator cannot be the dominant source of noise in small qubits and argued that electron traps in the Josephson barrier with large Coulomb repulsion would emit noise that agrees both in magnitude and in temperature dependence with experimental data.

### Fluctuations from edge defects in superconducting resonators

- Physics
- 2013

Superconducting resonators, used in astronomy and quantum computation, couple strongly to microscopic two-level defects. We monitor the microwave response of superconducting resonators and observe…

### Interacting tunneling model for two-level systems in amorphous materials and its predictions for their dephasing and noise in superconducting microresonators

- Physics
- 2015

We formulate the generalized tunneling model for two level systems in insulators that takes into account the interaction between them and a slow power law dependence of their density of states. We…

### Microscopic origin of low-frequency flux noise in josephson circuits.

- PhysicsPhysical review letters
- 2008

It is argued that this noise is produced by spins at superconductor insulator boundary whose dynamics is due to RKKY interaction, and this mechanism explains size independence of the noise, different frequency dependences of the spectra reported in large and small SQUIDs, and gives the correct intensity for realistic parameters.

### Spectral diffusion dephasing and motional narrowing in single semiconductor quantum dots

- Physics
- 2010

In this chapter, we address the extrinsic dephasing mechanism of spectral diffusion that dominates the decoherence in semiconductor quantum dots at cryogenic temperature.We discuss the limits of…

### Coherent quasiclassical dynamics of a persistent current qubit.

- PhysicsPhysical review letters
- 2006

A new regime of coherent quantum dynamics of a qubit is realized at low driving frequencies in the strong driving limit, with an oscillatory dependence of the qubit population on the driving-field amplitude and flux detuning.

### Superconducting Microresonators: Physics and Applications

- Physics, Education
- 2012

Interest in superconducting microresonators has grown dramatically over the past decade. Resonator performance has improved substantially through the use of improved geometries and materials as well…

### Dynamical decoupling of quantum two-level systems by coherent multiple Landau–Zener transitions

- Physicsnpj Quantum Information
- 2019

Increasing and stabilizing the coherence of superconducting quantum circuits and resonators is of utmost importance for various technologies, ranging from quantum information processors to highly…

### Landau-Zener population control and dipole measurement of a two-level-system bath

- Physics
- 2014

Tunneling two-level systems (TLSs), present in dielectrics at low temperatures, have been recently studied for fundamental understanding and superconducting device development. According to a recent…

### Characterization and reduction of microfabrication-induced decoherence in superconducting quantum circuits

- Physics
- 2014

Many superconducting qubits are highly sensitive to dielectric loss, making the fabrication of coherent quantum circuits challenging. To elucidate this issue, we characterize the interfaces and…