scholarly journals Photon-spin qubit-conversion based on Overhauser shift of Zeeman energies in quantum dots

2005 ◽  
Vol 87 (11) ◽  
pp. 112506 ◽  
Author(s):  
S. Muto ◽  
S. Adachi ◽  
T. Yokoi ◽  
H. Sasakura ◽  
I. Suemune
Keyword(s):  
Quantum Dots ◽  
Spin Qubit

Creation of charged excitons with two-color excitation method and initialization of electron spin qubit in quantum dots

2011 ◽  
Vol 98 (3) ◽  
pp. 032101 ◽  
Author(s):  
Hideki Gotoh ◽  
Haruki Sanada ◽  
Hidehiko Kamada ◽  
Hiroshi Yamaguchi ◽  
Tetsuomi Sogawa
Keyword(s):  
Quantum Dots ◽  
Electron Spin ◽  
Spin Qubit ◽  
Excitation Method

scholarly journals An Operation Guide of Si-MOS Quantum Dots for Spin Qubits

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2486
Author(s):  
Rui-Zi Hu ◽  
Rong-Long Ma ◽  
Ming Ni ◽  
Xin Zhang ◽  
Yuan Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Rabi Oscillation ◽  
Stability Diagram ◽  
Near Neighbor ◽  
Spin Qubits ◽  
Orbital State ◽  
Single Spin ◽  
Spin Qubit ◽  
Charge Stability

In the last 20 years, silicon quantum dots have received considerable attention from academic and industrial communities for research on readout, manipulation, storage, near-neighbor and long-range coupling of spin qubits. In this paper, we introduce how to realize a single spin qubit from Si-MOS quantum dots. First, we introduce the structure of a typical Si-MOS quantum dot and the experimental setup. Then, we show the basic properties of the quantum dot, including charge stability diagram, orbital state, valley state, lever arm, electron temperature, tunneling rate and spin lifetime. After that, we introduce the two most commonly used methods for spin-to-charge conversion, i.e., Elzerman readout and Pauli spin blockade readout. Finally, we discuss the details of how to find the resonance frequency of spin qubits and show the result of coherent manipulation, i.e., Rabi oscillation. The above processes constitute an operation guide for helping the followers enter the field of spin qubits in Si-MOS quantum dots.

Electrical Single Spin Manipulation in Gated Quantum Dots via Closed Loop Trajectories

2009 ◽  
Vol 1183 ◽  
Author(s):  
Michael Fearn ◽  
John H Jefferson
Keyword(s):  
Quantum Dots ◽  
Quantum Well ◽  
Excellent Agreement ◽  
Closed Loop ◽  
Spin Orbit ◽  
Single Spin ◽  
Analytic Expressions ◽  
Spin Qubit ◽  
Typical Length ◽  
Strong Spin

AbstractRotations of a single spin-qubit are demonstrated using only electrical gates. The results of simulations are presented for a typical gated quantum-well structure based on the strong spin-orbit semiconductor InSb, showing typical length and time scales for Hadamard and NOT operations. Approximate analytic expressions are derived for the spin transformations that give excellent agreement with the numerical results and demonstrate the generality of the method.

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