210 citations · 565 across the 20 of their papers we have counts for
20 papers
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…
A physically motivated analytical expression for the temperature dependence of the zero-field splitting of the nitrogen-vacancy center in diamond
M. C. Cambria, G. Thiering, A. Norambuena +7
The temperature dependence of the zero-field splitting (ZFS) between the and levels of the nitrogen-vacancy (NV) center's electronic ground-…
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…
Temperature-dependent spin-lattice relaxation of the nitrogen-vacancy spin triplet in diamond
M. C. Cambria, A. Norambuena, H. T. Dinani +8
Spin-lattice relaxation within the nitrogen-vacancy (NV) center's electronic ground-state spin triplet limits its coherence times, and thereby impacts its performance in quantum ap…
Material Effects on Electron Capture Decays in Cryogenic Sensors
Amit Samanta, Stephan Friedrich, Kyle G. Leach +1
Several current searches for physics beyond the standard model are based on measuring the electron capture (EC) decay of radionuclides implanted into cryogenic high-resolution sens…
Super-resolution Airy disk microscopy of individual color centers in diamond
A. Gardill, I. Kemeny, Y. Li +8
Super-resolution imaging techniques enable nanoscale microscopy in fields such as physics, biology, and chemistry. However, many super-resolution techniques require specialized opt…
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…
Probing charge dynamics in diamond with an individual color center
A. Gardill, I. Kemeny, M. C. Cambria +6
Control over the charge states of color centers in solids is necessary in order to fully utilize them in quantum technologies. However, the microscopic charge dynamics of deep defe…
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…
Limits on the Existence of sub-MeV Sterile Neutrinos from the Decay of Be in Superconducting Quantum Sensors
S. Friedrich, G. B. Kim, C. Bray +14
Sterile neutrinos are natural extensions to the standard model of particle physics and provide a possible portal to the dark sector. We report a new search for the existence of sub…
On Quantifying Large Lattice Relaxations in Photovoltaic Devices
Marco Nardone, Yasas Patikirige, Kyoung E. Kweon +5
Temporal variations of Cu(In,Ga)Se photovoltaic device properties during light exposure at various temperatures and voltage biases for times up to 100 h were analyzed using the…
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…
Electric-field noise from thermally-activated fluctuators in a surface ion trap
Crystal Noel, Maya Berlin-Udi, Clemens Matthiesen +4
We probe electric-field noise near the metal surface of an ion trap chip in a previously unexplored high-temperature regime. We observe a non-trivial temperature dependence with th…
Anomalous Diffusion along Metal/Ceramic Interfaces
Aakash Kumar, Hagit Barda, Leonid Klinger +4
Hole formation in a polycrystalline Ni film on an -AlO substrate coupled with a continuum diffusion analysis demonstrates that Ni diffusion along the Ni/-AlO…
Lithium Ion Solvation and Diffusion in Bulk Organic Electrolytes from First Principles and Classical Reactive Molecular Dynamics
Mitchell T. Ong, Osvalds Verners, Erik W. Draeger +3
Lithium-ion battery performance is strongly influenced by the ionic conductivity of the electrolyte, which depends on the speed at which Li ions migrate across the cell and relates…
Magnetic fluctuation from oxygen deficiency centers on the SiO surface
Nicole Adelstein, Donghwa Lee, Jonathan L. DuBois +1
The magnetic stability of oxygen deficiency centers on the surface of α-quartz is investigated with first- principles calculations to understand their role in contributing to magne…
Electronic and optical properties of GaSb:N from first principles
Priyamvada Jadaun, Hari P. Nair, Vincenzo Lordi +2
GaSb:N displays promise towards realization of optoelectronic devices accessing the mid-infrared wavelength regime. Theoretical and experimental results on its electronic and optic…
Contributions of point defects, chemical disorder, and thermal vibrations to electronic properties of Cd(1-x)Zn(x)Te alloys
Daniel Åberg, Paul Erhart, Vincenzo Lordi
We present a first principles study based on density functional theory of thermodynamic and electronic properties of the most important intrinsic defects in the semiconductor alloy…
Intrinsic point defects in aluminum antimonide
Daniel Åberg, Paul Erhart, Andrew J. Williamson +1
Calculations within density functional theory on the basis of the local density approximation are carried out to study the properties of intrinsic point defects in aluminum antimon…
Extrinsic point defects in aluminum antimonide
Paul Erhart, Daniel Åberg, Vincenzo Lordi
We investigate thermodynamic and electronic properties of group IV (C, Si, Ge, Sn) and group VI (O, S, Se, Te) impurities as well as P and H in aluminum antimonide (AlSb) using fir…