Journal Article

FZJ-2014-06200

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Inverted singlet-triplet qubit coded on a two-electron double quantum dot

Mehl, S. (Corresponding Author)FZJ* ; DiVincenzo, D.FZJ*

2014
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/8115  doi:10.1103/PhysRevB.90.195424

Abstract: 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

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Contributing Institute(s):

1. Theoretische Nanoelektronik (IAS-3)
2. Theoretische Nanoelektronik (PGI-2)

Research Program(s):

1. 422 - Spin-based and quantum information (POF2-422) (POF2-422)

Appears in the scientific report 2014

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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