71 citations · 398 across the 20 of their papers we have counts for
7 papers · 1 filter
Impact of silicon doping on low frequency charge noise and conductance drift in GaAs/AlGaAs nanostructures
S. Fallahi, J. R. Nakamura, G. C. Gardner +2
We present measurements of low frequency charge noise and conductance drift in modulation doped GaAs/AlGaAs heterostructures grown by molecular beam epitaxy in which the silicon do…
A capacitance spectroscopy-based platform for realizing gate-defined electronic lattices
T. Hensgens, U. Mukhopadhyay, P. Barthelemy +6
Electrostatic confinement in semiconductors provides a flexible platform for the emulation of interacting electrons in a two-dimensional lattice, including in the presence of gauge…
Mobility in excess of cm/Vs in InAs quantum wells grown on lattice mismatched InP substrates
A. T. Hatke, T. Wang, 2 C. Thomas +2
InAs-based two-dimensional electron systems grown on lattice mismatched InP substrates offer a robust platform for the pursuit of topologically protected quantum computing. We inve…
Gate-Sensing Charge Pockets in the Semiconductor Qubit Environment
X. G. Croot, S. J. Pauka, H. Lu +6
We report the use of dispersive gate sensing (DGS) as a means of probing the charge environment of heterostructure-based qubit devices. The DGS technique, which detects small shift…
Quantum Lifetime in Ultra-High Quality GaAs Quantum Wells: Relationship to and Impact of Density Fluctuations
Qi Qian, James R. Nakamura, Saeed Fallahi +6
We consider quantum lifetime derived from low-field Shubnikov-de Haas oscillations as a metric of quality of the two-dimensional electron gas in GaAs quantum wells that expresses l…
High temperature resistivity measured at ν = 5/2 as a predictor of 2DEG quality in the N=1 Landau level
Qi Qian, James R. Nakamura, Saeed Fallahi +3
We report a high temperature (T = 0.3K) indicator of the excitation gap at the filling factor fractional quantum Hall state in ultra-high quality AlGaAs/GaAs two…
Apparent temperature-induced reorientation of quantum Hall stripes
Q. Shi, M. A. Zudov, B. Friess +4
Our magnetotransport measurements of quantum Hall stripes in a high-quality GaAs quantum well in a slightly tilted magnetic field reveal that the orientation of stripes can be chan…