Landau-Zener-Stuckelberg-Majorana Interferometry of a Single Hole

被引：38

作者：

Bogan, Alex ^{[1
]}

Studenikin, Sergei ^{[1
]}

Korkusinski, Marek ^{[1
]}

Gaudreau, Louis ^{[1
]}

Zawadzki, Piotr ^{[1
]}

Sachrajda, Andy S. ^{[1
]}

Tracy, Lisa ^{[2
]}

Reno, John ^{[3
]}

Hargett, Terry ^{[3
]}

机构：

[1] CNR, Emerging Technol Div, Ottawa, ON K1A 0R6, Canada

[2] Sandia Natl Labs, Albuquerque, NM 87185 USA

[3] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 20期

基金：

加拿大自然科学与工程研究理事会;

关键词：

PAULI SPIN BLOCKADE; DOUBLE-QUANTUM DOT; COHERENT CONTROL; ARTIFICIAL ATOM; ELECTRON SPIN; QUBIT; NANOWIRE; SEMICONDUCTOR; SPECTROSCOPY; OSCILLATIONS;

D O I：

10.1103/PhysRevLett.120.207701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We perform Landau-Zener-Stuckelberg-Majorana (LZSM) spectroscopy on a system with strong spin-orbit interaction (SOI), realized as a single hole confined in a gated double quantum dot. Analogous to electron systems, at a magnetic field B = 0 and high modulation frequencies, we observe photon-assisted- tunneling between dots, which smoothly evolves into the typical LZSM funnel-shaped i-nterference pattern as the frequency is decreased. In contrast to electrons, the SOI enables an additional, efficient spin-flip int-erdot tunneling channel, introducing a distinct interference pattern at finite B. Magnetotransport spectra at low-frequency LZSM driving show the two channels to be equally coherent. High-frequenc-y LZSM driving reveals complex photon-assisted- tunneling pathways, both spin conserving and spin flip, which form closed loops at critical magnetic fields. In one such loop, an arbitrary hole spin state is inverted, opening the way toward its all-electric-al manipulation.

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页数：6

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