%0 Journal Article
%A Mehl, Sebastian
%A DiVincenzo, David
%T Inverted singlet-triplet qubit coded on a two-electron double quantum dot
%J Physical review / B
%V 90
%N 19
%@ 1098-0121
%C College Park, Md.
%I APS
%M FZJ-2014-06200
%P 195424
%D 2014
%X The sz=0 spin configuration of two electrons confined at a double quantum dot (DQD) encodes the singlet-triplet qubit (STQ). We introduce the inverted STQ (ISTQ) that emerges from the setup of two quantum dots (QDs) differing significantly in size and out-of-plane magnetic fields. The strongly confined QD has a two-electron singlet ground state, but the weakly confined QD has a two-electron triplet ground state in the sz=0 subspace. Spin-orbit interactions act nontrivially on the sz=0 subspace and provide universal control of the ISTQ together with electrostatic manipulations of the charge configuration. GaAs and InAs DQDs can be operated as ISTQs under realistic noise conditions
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000345465200005
%R 10.1103/PhysRevB.90.195424
%U https://juser.fz-juelich.de/record/172757