639 citations · 3.7k across the 22 of their papers we have counts for
22 papers
Coherence and Screening in Multi-Electron Spin Qubits
A. P. Higginbotham, F. Kuemmeth, M. P. Hanson +2
The performance of multi-electron spin qubits is examined by comparing exchange oscillations in coupled single-electron and multi-electron quantum dots in the same device. Fast (>…
Magnetic field dependence of Pauli spin blockade: a window into the sources of spin relaxation in silicon quantum dots
G. Yamahata, T. Kodera, H. O. H. Churchill +3
We investigate spin relaxation in a silicon double quantum dot via leakage current through Pauli blockade as a function of interdot detuning and magnetic field. A dip in leakage cu…
Relaxation and Readout Visibility of a Singlet-Triplet Qubit in an Overhauser Field Gradient
C. Barthel, J. Medford, H. Bluhm +4
Using single-shot charge detection in a GaAs double quantum dot, we investigate spin relaxation time T_1 and readout visibility of a two-electron singlet-triplet qubit following si…
Conditional operation of a spin qubit
I. van Weperen, B. D. Armstrong, E. A. Laird +4
We report coherent operation of a singlet-triplet qubit controlled by the arrangement of two electrons in an adjacent double quantum dot. The system we investigate consists of two…
Interlaced Dynamical Decoupling and Coherent Operation of a Singlet-Triplet Qubit
C. Barthel, J. Medford, C. M. Marcus +2
We experimentally demonstrate coherence recovery of singlet-triplet superpositions by interlacing qubit rotations between Carr-Purcell (CP) echo sequences. We then compare performa…
Fast sensing of double-dot charge arrangement and spin state with an rf sensor quantum dot
C. Barthel, M. Kjaergaard, J. Medford +4
Single-shot measurement of the charge arrangement and spin state of a double quantum dot are reported, with measurement times down to ~ 100 ns. Sensing uses radio-frequency reflect…