89 citations · 240 across the 6 of their papers we have counts for
6 papers
Ohmic and step noise from a single trapping center hybridized with a Fermi sea
Rogerio de Sousa, K. Birgitta Whaley, Frank K. Wilhelm +1
We show that single electron tunneling devices such as the Cooper-pair box or double quantum dot can be sensitive to the zero-point fluctuation of a single trapping center hybridiz…
Universal Scaling of Hyperfine-Induced Electron Spin Echo Decay
Neil Shenvi, Rogerio de Sousa, K. Birgitta Whaley
The decoherence of a localized electron spin in a lattice of nuclear spins is an important problem for potential solid-state implementations of a quantum computer. We demonstrate t…
Thomas-Fermi Theory of the Hyperfine Constants of Endohedral Fullerene Atoms
Joshua Schrier, K. Birgitta Whaley
We present a modified Thomas-Fermi theory that describes the increase of the hyperfine coupling constants of endohedrally enclosed atoms. We use the March boundary conditions corre…
Non-Perturbative Bounds on Hyperfine-Induced Electron Spin Coherence Times
Neil Shenvi, Rogerio de Sousa, K. Birgitta Whaley
We address the decoherence of a localized electron spin in an external magnetic field due to the hyperfine interaction with a lattice of nuclear spins. Using a completely non-pertu…
Electronic transport, structure, and energetics of endohedral Gd@C82 metallofullerenes
Laxmidhar Senapati, Joshua Schrier, K. Birgitta Whaley
Electronic structure and transport properties of the fullerene C and the metallofullerene Gd@C are investigated with density functional theory and the Landauer-Buttik…
Qubit coherence control in a nuclear spin bath
Rogerio de Sousa, Neil Shenvi, K. Birgitta Whaley
Coherent dynamics of localized spins in semiconductors is limited by spectral diffusion arising from dipolar fluctuation of lattice nuclear spins. Here we extend the semiclassical…