Fast High-Fidelity Hole Spin Initialisation in a Single Quantum Dot at Zero Magnetic Field

被引：0
|
作者：
Brash, A. J. [1 ]
Martins, L. M. P. [1 ]
Liu, F. [1 ]
Quilter, J. H. [1 ,2 ]
Skolnick, M. S. [1 ]
Fox, A. M. [1 ]
机构：
[1] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England
[2] Univ London, Dept Phys, Royal Holloway, Egham TW20 0EX, Surrey, England
来源：
2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) | 2015年
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Fast (similar to 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.
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