144 citations · 405 across the 4 of their papers we have counts for
5 papers
High-quality quantum point contact in two-dimensional GaAs (311)A hole system
J. Shabani, J. R. Petta, M. Shayegan
We studied ballistic transport across a quantum point contact (QPC) defined in a high-quality, GaAs (311)A two-dimensional (2D) hole system using shallow etching and top-gating. Th…
Measurement of Temporal Correlations of the Overhauser Field in a Double Quantum Dot
D. J. Reilly, J. M. Taylor, E. A. Laird +4
In quantum dots made from materials with nonzero nuclear spins, hyperfine coupling creates a fluctuating effective Zeeman field (Overhauser field) felt by electrons, which can be a…
Dynamic Nuclear Polarization with Single Electron Spins
J. R. Petta, J. M. Taylor, A. C. Johnson +5
We polarize nuclear spins in a GaAs double quantum dot by controlling two-electron spin states near the anti-crossing of the singlet (S) and m_S=+1 triplet (T+) using pulsed gates.…
Effect of Exchange Interaction on Spin Dephasing in a Double Quantum Dot
E. A. Laird, J. R. Petta, A. C. Johnson +4
We measure singlet-triplet dephasing in a two-electron double quantum dot in the presence of an exchange interaction which can be electrically tuned from much smaller to much large…
Singlet-triplet spin blockade and charge sensing in a few-electron double quantum dot
A. C. Johnson, J. R. Petta, C. M. Marcus +2
Singlet-triplet spin blockade in a few-electron lateral double quantum dot is investigated using simultaneous transport and charge-sensing measurements. Transport from the (1,1) to…