Title :
Fast high-fidelity hole spin initialisation in a single quantum dot at zero magnetic field
Author :
Brash, A.J. ; Martins, L.M.P. ; Liu, F. ; Quilter, J.H. ; Skolnick, M.S. ; Fox, A.M.
Author_Institution :
Dept. of Phys. & Astron., Univ. of Sheffield, Sheffield, UK
Abstract :
Fast (~50 ps) initialization of a long-lived hole spin qubit in a single InGaAs quantum dot is achieved by exciton ionization. A QD exhibiting no fine structure yields fidelities exceeding 98% at zero external field thus forming a key building block for high fidelity quantum information processing.
Keywords :
III-V semiconductors; excitons; gallium arsenide; indium compounds; ionisation; optical information processing; quantum computing; quantum optics; semiconductor quantum dots; InGaAs; exciton ionization; fast high-fidelity hole spin initialisation; high fidelity quantum information processing; long-lived hole spin qubit; single quantum dot; zero external field; zero magnetic field; Delays; Excitons; Frequency selective surfaces; Probes; Quantum dots; Trions; Tunneling;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
