320 citations · 2.9k across the 46 of their papers we have counts for
22 papers · 1 filter
Enhanced spin coherence at the sweet spot of a self-assembled quantum dot molecule
Kha X. Tran, Allan S. Bracker, Michael K. Yates +2
A pair of coupled dots with one electron in each dot can provide improvements in spin coherence, particularly at an electrical bias called the sweet spot, but few measurements have…
Coherent population trapping combined with cycling transitions for quantum dot hole spins using triplet trion states
Samuel G. Carter, Stefan C. Badescu, Allan S. Bracker +4
Optical spin rotations and cycling transitions for measurement are normally incompatible in quantum dots, presenting a fundamental problem for quantum information applications. Her…
Direct high resolution resonant Raman scattering measurements of InAs quantum dot dynamic nuclear spin polarization states
Aaron M. Ross, Allan S. Bracker, Michael K. Yakes +3
We report on the direct measurement of the electron spin splitting and the accompanying nuclear Overhauser (OH) field, and thus the underlying nuclear spin polarization (NSP) and f…
Spectral broadening of optical transitions at tunneling resonances in InAs/GaAs coupled quantum dot pairs
P. Kumar, C. Jennings, M. Scheibner +3
We report on linewidth analysis of optical transitions in InAs/GaAs coupled quantum dots as a function of bias voltage, temperature, and tunnel coupling strength. A significant lin…
Non-local nuclear spin quieting in quantum dot molecules: Optically-induced extended two-electron spin coherence time
Colin M. Chow, Aaron M. Ross, Danny Kim +4
We demonstrate the extension of coherence between all four two-electron spin ground states of an InAs quantum dot molecule (QDM) via non-local suppression of nuclear spin fluctuati…
Strong Hyperfine-Induced Modulation of an Optically-Driven Hole Spin in an InAs Quantum Dot
Samuel G. Carter, Sophia E. Economou, Alex Greilich +4
Compared to electrons, holes in InAs quantum dots have a significantly weaker hyperfine interaction that leads to less dephasing from nuclear spins. Thus many recent studies have s…