Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Chinese Physics Letters

Probing Energy Spectrum of Quadruple Quantum Dots with Microwave Field

尚汝南, 李海欧, 曹刚, 余国栋, 肖明, 涂涛, 郭国平

Published Jan 1, 2014• 0 citations
OpenAlex

Abstract

2000A 两倍量点由一个二水平的系统定义 qubit。在二 qubits 之间联合导致一个双二水平的系统进一个四水平的系统。当同时调节每个双量点的精力 detuning 时，我们试验性地学习在二个电容的联合 GaAs/AlGaAs 双量点之间联合。适用的微波光子(在 20 GHz 的频率) 在这个系统上并且与一个量点接触察觉者观察回声通道，我们获得与 a coupled two-qubit Hamiltonian 的数字模拟结果一致的一个刺激系列。这研究证明一个双量点能为控制的量门作为一个非凡的平台被利用。

Related papers

Far-detuned two-qubit operation of the quantum-dot hybrid qubit coupled to a microwave resonator

J. C. Abadillo-Uriel, Cameron King, S. N. Coppersmith +1 more

Bulletin of the American Physical Society•Mar 2, 2020•0 citations

Coherent manipulation of three-dimensional probe absorption spectrum in a strained GaAs-AlGaAs-InAs semiconductor quantum dot

Le Ai, Zhenyu Shi, Tao Shui +1 more

Optical and Quantum Electronics•Jun 5, 2024•0 citations

Probing Energy Spectrum of Quadruple Quantum Dots with Microwave Field

Runan Shang, Hai-Ou Li, Gang Cao +4 more

A double quantum dot defines a qubit by a two-level system. The coupling between two qubits induces a double two-level system into a four-level system. We study experimentally the coupling between two capacitive coupled GaAs/AlGaAs double quantum dots while tuning the energy detuning of each double quantum dot simultaneously. Applying microwave photons (at a frequency of 20 GHz) on this system and observing the resonance tunneling with a quantum point contact detector, we obtain an excitation spectrum which is consistent with the numerical simulation result of a coupled two-qubit Hamiltonian. This study demonstrates that a double quantum dot can be exploited as an extraordinary platform for controlled quantum gates.

Chinese Physics Letters•May 1, 2014•5 citations

Microwave emission from double quantum dots into cavities

Andreas J. Wallraff

Bulletin of the American Physical Society•Mar 17, 2016•0 citations

Microwave-Driven Transitions in Two Coupled Semiconductor Charge Qubits

Karl D. Petersson, Charles G. Smith, David V. Anderson +3 more

We have studied interactions between two capacitively coupled GaAs/AlGaAs few-electron double quantum dots. Each double quantum dot defines a tunable two-level system, or qubit, in which a single excess electron occupies the ground state of either one dot or the other. Applying microwave radiation, we resonantly drive transitions between states and noninvasively measure occupancy changes using proximal quantum point contact charge detectors. The level structure of the interacting two-qubit system is probed by driving it at a fixed microwave frequency while varying the energy detuning of both double dots. We observe additional resonant transitions consistent with a simple coupled two-qubit Hamiltonian model.

arXiv:0907.2409•Physical Review Letters•Jul 1, 2009•43 citations

Microwave spectroscopy of a double quantum dot in the low- and high-power regime

利正 藤澤, T. Fujisawa

•Jan 1, 1999•0 citations
2000A 两倍量点由一个二水平的系统定义 qubit。在二 qubits 之间联合导致一个双二水平的系统进一个四水平的系统。当同时调节每个双量点的精力 detuning 时，我们试验性地学习在二个电容的联合 GaAs/AlGaAs 双量点之间联合。适用的微波光子(在 20 GHz 的频率) 在这个系统上并且与一个量点接触察觉者观察回声通道，我们获得与 a coupled two-qubit Hamiltonian 的数字模拟结果一致的一个刺激系列。这研究证明一个双量点能为控制的量门作为一个非凡的平台被利用。
A double quantum dot defines a qubit by a two-level system. The coupling between two qubits induces a double two-level system into a four-level system. We study experimentally the coupling between two capacitive coupled GaAs/AlGaAs double quantum dots while tuning the energy detuning of each double quantum dot simultaneously. Applying microwave photons (at a frequency of 20 GHz) on this system and observing the resonance tunneling with a quantum point contact detector, we obtain an excitation spectrum which is consistent with the numerical simulation result of a coupled two-qubit Hamiltonian. This study demonstrates that a double quantum dot can be exploited as an extraordinary platform for controlled quantum gates.
We have studied interactions between two capacitively coupled GaAs/AlGaAs few-electron double quantum dots. Each double quantum dot defines a tunable two-level system, or qubit, in which a single excess electron occupies the ground state of either one dot or the other. Applying microwave radiation, we resonantly drive transitions between states and noninvasively measure occupancy changes using proximal quantum point contact charge detectors. The level structure of the interacting two-qubit system is probed by driving it at a fixed microwave frequency while varying the energy detuning of both double dots. We observe additional resonant transitions consistent with a simple coupled two-qubit Hamiltonian model.