scholarly journals Shaped electric fields for fast optimal manipulation of electron spin and position in a double quantum dot

2016 ◽  
Vol 93 (3) ◽  
Author(s):  
J. A. Budagosky ◽  
D. V. Khomitsky ◽  
E. Ya. Sherman ◽  
Alberto Castro
Keyword(s):  
Quantum Dot ◽  
Electric Fields ◽  
Electron Spin ◽  
Double Quantum ◽  
Double Quantum Dot

scholarly journals Electron-Spin Manipulation and Resonator Readout in a Double-Quantum-Dot Nanoelectromechanical System

2008 ◽  
Vol 100 (13) ◽  
Author(s):  
N. Lambert ◽  
I. Mahboob ◽  
M. Pioro-Ladrière ◽  
Y. Tokura ◽  
S. Tarucha ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Electron Spin ◽  
Double Quantum ◽  
Spin Manipulation ◽  
Double Quantum Dot ◽  
Nanoelectromechanical System

scholarly journals Weak Values of Electron Spin in a Double Quantum Dot

2008 ◽  
Vol 100 (5) ◽  
Author(s):  
Alessandro Romito ◽  
Yuval Gefen ◽  
Yaroslav M. Blanter
Keyword(s):  
Quantum Dot ◽  
Electron Spin ◽  
Double Quantum ◽  
Weak Values ◽  
Double Quantum Dot

Single electron spin addressing by using photon-assisted-tunneling in a double quantum dot including a micro-magnet

2010 ◽  
Vol 42 (4) ◽  
pp. 825-829 ◽  
Author(s):  
Yun-Sok Shin ◽  
Toshiaki Obata ◽  
Michel Pioro-Ladrière ◽  
Yasuhiro Tokura ◽  
Roland Brunner ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Electron Spin ◽  
Single Electron ◽  
Double Quantum ◽  
Double Quantum Dot ◽  
Assisted Tunneling

Entanglement of two-electron spin states in a double quantum dot

2017 ◽  
Vol 15 (01) ◽  
pp. 1750006 ◽  
Author(s):  
V. G. Bagrov ◽  
D. M. Gitman ◽  
A. D. Levin ◽  
M. S. Meireles
Keyword(s):  
Magnetic Field ◽  
Quantum Dot ◽  
Electron Spin ◽  
Coherent Control ◽  
Spin Exchange ◽  
Time Dependent ◽  
Double Quantum ◽  
Spin States ◽  
Quantum Bit ◽  
Double Quantum Dot

Recently, an implementation of a universal set of one- and two-quantum-bit gates for quantum computation using spin states of coupled single-electron quantum dots was proposed. It was demonstrated that it is possible to execute a coherent control of a quantum system based on two-electron spin states in a double quantum dot, allowing state preparation, coherent manipulation, and projective readout. This possibility is based on rapid electrical control of the spin exchange interaction. These results motivated us to develop a formal theoretical study of the corresponding model of two coupled spins placed in a magnetic field and subjected to a time-dependent mutual Heisenberg interaction. Using possible exact solutions of the corresponding quantum problem, we study entangling of different separable initial states in this model. It is demonstrated that the entanglement due to a time-dependent Heisenberg interaction is dominating in comparison with the entanglement due to the action of an external magnetic field.

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