10 citations · 28 across the 9 of their papers we have counts for
9 papers
Field-Dependent Qubit Flux Noise Simulated from Materials-Specific Disordered Exchange Interactions Between Paramagnetic Adsorbates
Keith G. Ray, Yaniv Rosen, Jonathan L Dubois +1
Superconducting quantum devices, from qubits and magnetometers to dark matter detectors, are influenced by magnetic flux noise originating from paramagnetic surface defects and imp…
Edge Magnetoplasmon Dispersion and Time-Resolved Plasmon Transport in a Quantum Anomalous Hall Insulator
Luis A. Martinez, Gang Qiu, Peng Deng +8
A quantum anomalous Hall (QAH) insulator breaks reciprocity by combining magnetic polarization and spin-orbit coupling to generate a unidirectional transmission of signals in the a…
Dangling bonds as possible contributors to charge noise in silicon and silicon-germanium quantum dot qubits
Joel B. Varley, Keith G. Ray, Vincenzo Lordi
Spin qubits based on Si and SiGe quantum dot architectures exhibit among the best coherence times of competing quantum computing technologies, yet they still suffer f…
XPS analysis of molecular contamination and sp2 amorphous carbon on oxidized (100) diamond
Ricardo Vidrio, Daniel Vincent, Benjamin Bachman +11
The efficacy of oxygen (O) surface terminations on diamond is an important factor for the performance and stability for diamond-based quantum sensors and electronics. Given the wid…
Phase-Slip Lines and Anomalous Josephson Effects in a Tungsten Clusters-Topological Insulator Microbridge
Dong-Xia Qu, Joseph J. Cuozzo, Nick E. Teslich +6
Superconducting topological systems formed by a strong 3D topological insulator (TI) in proximity to a conventional -wave superconductor (SC) have been intensely studied as they…
Simulating noise on a quantum processor: interactions between a qubit and resonant two-level system bath
Yujin Cho, Dipti Jasrasaria, Keith G. Ray +4
Material defects fundamentally limit the coherence times of superconducting qubits, and manufacturing completely defect-free devices is not yet possible. Therefore, understanding t…
How Correlated Adsorbate Dynamics on Realistic Substrates Can Give Rise to 1/ω Electric-Field Noise in Surface Ion Traps
Benjamin Foulon, Keith G. Ray, Chang-Eun Kim +3
Ion traps are promising architectures for implementing scalable quantum computing, but they suffer from excessive "anomalous" heating that prevents their full potential from being…
Changes in electric-field noise due to thermal transformation of a surface ion trap
Maya Berlin-Udi, Clemens Matthiesen, P. N. Thomas Lloyd +9
We aim to illuminate how the microscopic properties of a metal surface map to its electric-field noise characteristics. In our system, prolonged heat treatments of a metal film can…
vdW-corrected density functional study of electric field noise heating in ion traps caused by electrode surface adsorbates
Keith G. Ray, Brenda M. Rubenstein, Wenze Gu +1
In order to realize the full potential of ion trap quantum computers, an improved understanding is required of the motional heating that trapped ions experience. Experimental studi…