832 citations · 1.9k across the 10 of their papers we have counts for
10 papers
A digitally controlled silicon quantum processing unit
Members of the HRL Quantum Team, Collaborators, : +255
Commercially-relevant quantum computers will require large numbers of high-performing qubits that can be manufactured, integrated, and controlled at scale. Silicon exchange-only (E…
High Saturation Power Josephson Parametric Amplifier with GHz Bandwidth
O. Naaman, D. G. Ferguson, R. J. Epstein
We present design and simulation of a Josephson parametric amplifier with bandwidth exceeding 1.6 GHz, and with high saturation power approaching -90 dBm at a gain of 22.8 dB. An i…
Isolated spin qubits in SiC with a high-fidelity infrared spin-to-photon interface
David J. Christle, Paul V. Klimov, Charles F. de las Casas +11
The divacancies in SiC are a family of paramagnetic defects that show promise for quantum communication technologies due to their long-lived electron spin coherence and their optic…
Resonant optical spectroscopy and coherent control of Cr4+ spin ensembles in SiC and GaN
William F. Koehl, Berk Diler, Samuel J. Whiteley +4
Spins bound to point defects are increasingly viewed as an important resource for solid-state implementations of quantum information technologies. In particular, there is a growing…
Optical polarization of nuclear spins in silicon carbide
Abram L. Falk, Paul V. Klimov, Viktor Ivády +5
We demonstrate optically pumped dynamic nuclear polarization of 29-Si nuclear spins that are strongly coupled to paramagnetic color centers in 4H- and 6H-SiC. The 99 +/- 1% degree…
Electrically and mechanically tunable electron spins in silicon carbide color centers
Abram L. Falk, Paul V. Klimov, Bob B. Buckley +6
The electron spins of semiconductor defects can have complex interactions with their host, particularly in polar materials like SiC where electrical and mechanical variables are in…
Polytype control of spin qubits in silicon carbide
Abram L. Falk, Bob B. Buckley, Greg Calusine +6
Crystal defects can confine isolated electronic spins and are promising candidates for solid-state quantum information. Alongside research focusing on nitrogen vacancy centers in d…
Quantum computing with defects
J. R. Weber, W. F. Koehl, J. B. Varley +4
Identifying and designing physical systems for use as qubits, the basic units of quantum information, are critical steps in the development of a quantum computer. Among the possibi…
Current-Induced Spin Polarization in Gallium Nitride
W. F. Koehl, M. H. Wong, C. Poblenz +4
Electrically generated spin polarization is probed directly in bulk GaN using Kerr rotation spectroscopy. A series of n-type GaN epilayers are grown in the wurtzite phase both by m…
Zero-field splitting of Kondo resonances in a carbon nanotube quantum dot
J. Nygard, W. F. Koehl, N. Mason +2
We present low-temperature electron transport measurements on a single-wall carbon nanotube quantum dot exhibiting Kondo resonances at low temperature. Contrary to the usual behavi…