Single-hole spin relaxation in a quantum dot

2003 ◽  
Vol 68 (16) ◽  
Author(s):  
T. Flissikowski ◽  
I. A. Akimov ◽  
A. Hundt ◽  
F. Henneberger
Keyword(s):  
Quantum Dot ◽  
Spin Relaxation ◽  
Single Hole

scholarly journals Fundamental limits of electron and nuclear spin qubit lifetimes in an isolated self-assembled quantum dot

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
George Gillard ◽  
Ian M. Griffiths ◽  
Gautham Ragunathan ◽  
Ata Ulhaq ◽  
Callum McEwan ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Spin Relaxation ◽  
Nuclear Spin ◽  
Operating Conditions ◽  
External Control ◽  
Spin Qubits ◽  
Fundamental Limits ◽  
Trade Offs ◽  
Wide Range ◽  
Spin Qubit

AbstractCombining external control with long spin lifetime and coherence is a key challenge for solid state spin qubits. Tunnel coupling with electron Fermi reservoir provides robust charge state control in semiconductor quantum dots, but results in undesired relaxation of electron and nuclear spins through mechanisms that lack complete understanding. Here, we unravel the contributions of tunnelling-assisted and phonon-assisted spin relaxation mechanisms by systematically adjusting the tunnelling coupling in a wide range, including the limit of an isolated quantum dot. These experiments reveal fundamental limits and trade-offs of quantum dot spin dynamics: while reduced tunnelling can be used to achieve electron spin qubit lifetimes exceeding 1 s, the optical spin initialisation fidelity is reduced below 80%, limited by Auger recombination. Comprehensive understanding of electron-nuclear spin relaxation attained here provides a roadmap for design of the optimal operating conditions in quantum dot spin qubits.

scholarly journals Dynamics of a Mn spin coupled to a single hole confined in a quantum dot

2014 ◽  
Vol 90 (11) ◽  
Author(s):  
B. Varghese ◽  
H. Boukari ◽  
L. Besombes
Keyword(s):  
Quantum Dot ◽  
Single Hole

scholarly journals Single hole spin relaxation probed by fast single-shot latched charge sensing

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Alex Bogan ◽  
Sergei Studenikin ◽  
Marek Korkusinski ◽  
Louis Gaudreau ◽  
Piotr Zawadzki ◽  
...  
Keyword(s):  
Spin Relaxation ◽  
Single Shot ◽  
Charge Sensing ◽  
Single Hole

Single-hole physics in GaAs/AlGaAs double quantum dot system with strong spin–orbit interaction

2021 ◽  
Vol 36 (5) ◽  
pp. 053001
Author(s):  
Sergei Studenikin ◽  
Marek Korkusinski ◽  
Alex Bogan ◽  
Louis Gaudreau ◽  
D Guy Austing ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Orbit Interaction ◽  
Double Quantum ◽  
Spin Orbit ◽  
Spin Orbit Interaction ◽  
Single Hole ◽  
Double Quantum Dot ◽  
Strong Spin

Spin relaxation length in quantum dot spin LEDs

2013 ◽  
Vol 10 (9) ◽  
pp. 1214-1217 ◽  
Author(s):  
Henning Höpfner ◽  
Carola Fritsche ◽  
Arne Ludwig ◽  
Astrid Ludwig ◽  
Frank Stromberg ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Spin Relaxation ◽  
Relaxation Length

Coherent optical control a single hole spin in a quantum dot

2012 ◽  
Author(s):  
Timothy M. Godden ◽  
John H. Quilter ◽  
Andrew J. Ramsay ◽  
Stephen J. Boyle ◽  
Isaac J. Luxmoore ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Optical Control ◽  
Single Hole
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