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Article

Theoretical Study on Spin-Selective Coherent Electron Transfer in a Quantum Dot Array

by
Shumpei Masuda
1,*,
Kuan Yen Tan
2,3 and
Mikio Nakahara
4
1
College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Ichikawa 272-0827, Japan
2
QCD Labs, QTF Center of Excellence, Department of Applied Physics, Aalto University, 00076 Aalto, Finland
3
IQM Finland Oy, Vaisalantie 6 C, 02130 Espoo, Finland
4
Department of Mathematics, Shanghai University, 99 Shangda Road, Shangai 200444, China
*
Author to whom correspondence should be addressed.
Universe 2020, 6(1), 2; https://doi.org/10.3390/universe6010002
Submission received: 17 October 2019 / Revised: 5 December 2019 / Accepted: 17 December 2019 / Published: 22 December 2019
(This article belongs to the Special Issue Quantum Dynamics and Applications)
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Abstract

Recently, we proposed the spin-selective coherent electron transfer in a silicon-quantum-dot array. It requires temporal tuning of two pulses of an oscillating magnetic field and gate voltage control. This paper proposes a simpler method that requires a single pulse of oscillating magnetic field and gate voltage control. We examined the robustness of the control against the error in the pulse amplitude and the effect of the excited states relaxation to the control efficiency. In addition, we propose a novel control method based on a shortcuts-to-adiabaticity protocol, which utilizes two pulses but requires temporal control of the pulse amplitude for only one of them. We compared their efficiencies under the effect of realistic pulse amplitude errors and relaxation.
Keywords: spin-selective electron transfer; STIRAP; shortcuts to adiabaticity spin-selective electron transfer; STIRAP; shortcuts to adiabaticity

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MDPI and ACS Style

Masuda, S.; Tan, K.Y.; Nakahara, M. Theoretical Study on Spin-Selective Coherent Electron Transfer in a Quantum Dot Array. Universe 2020, 6, 2. https://doi.org/10.3390/universe6010002

AMA Style

Masuda S, Tan KY, Nakahara M. Theoretical Study on Spin-Selective Coherent Electron Transfer in a Quantum Dot Array. Universe. 2020; 6(1):2. https://doi.org/10.3390/universe6010002

Chicago/Turabian Style

Masuda, Shumpei, Kuan Yen Tan, and Mikio Nakahara. 2020. "Theoretical Study on Spin-Selective Coherent Electron Transfer in a Quantum Dot Array" Universe 6, no. 1: 2. https://doi.org/10.3390/universe6010002

APA Style

Masuda, S., Tan, K. Y., & Nakahara, M. (2020). Theoretical Study on Spin-Selective Coherent Electron Transfer in a Quantum Dot Array. Universe, 6(1), 2. https://doi.org/10.3390/universe6010002

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