Fast optical control of a coded qubit in a triple quantum dot

Acosta Coden Diego S.; Gomez Sergio S.; Romero Rodolfo H.; Osenda Omar; Ferron Alejandro

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Fast optical control of a coded qubit in a triple quantum dot

机译：在三量子点中的编码量子位快速控制

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In this work, we study strategies for the optical control, within the dipole approximation, of a qubit encoded in the total intrinsic angular momentum states of three electrons confined in a triple quantum dot. The system is modeled using effective confining potentials, and its electronic structure is calculated using the configuration interaction method. Optimal control theory (OCT) was applied to design low-fluence time-dependent electric fields controlling the qubit in times shorter than a nanosecond. The resulting pulses produce transitions between the qubit states for experimentally available field amplitudes with high fidelity. Moreover, studying the dominant frequencies present in the OCT pulses, we show that the switching between the qubit states can also be achieved with simpler combinations of sinusoidal driving fields that produce transitions to intermediate states. The limitations of an extended Hubbard description for the model and its dynamic behavior are also discussed.

机译：在这项工作中，我们研究了在三量子点中限制的三个电子的总内在角动量状态中编码的偶极逼近的光学控制的策略。系统采用有效限制势建模，使用配置交互方法计算其电子结构。应用最佳控制理论（OCT）以在短于纳秒短的时间控制Qubit控制Qubit的低流量时间依赖电场。得到的脉冲产生Qubit状态之间的转换，用于具有高保真的实验现场幅度。此外，研究OCT脉冲中存在的主要频率，我们表明QUBBit状态之间的切换也可以通过产生到中间状态的转换的正弦驱动场的更简单的组合来实现。还讨论了模型的扩展船章描述及其动态行为的局限。

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来源
《Physica Scripta: An International Journal for Experimental and Theoretical Physics》 |2019年第2期|共10页
作者
Acosta Coden Diego S.; Gomez Sergio S.; Romero Rodolfo H.; Osenda Omar; Ferron Alejandro;
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作者单位

Univ Nacl Nordeste Fac Ciencias Exactas &

Nat &

Agrimensura Inst Modelado &

Innovac Tecnol CONICET Ave Libertad 5400 W3404AAS Corrientes Argentina;

Univ Nacl Nordeste Fac Ciencias Exactas &

Nat &

Agrimensura Inst Modelado &

Innovac Tecnol CONICET Ave Libertad 5400 W3404AAS Corrientes Argentina;

Univ Nacl Nordeste Fac Ciencias Exactas &

Nat &

Agrimensura Inst Modelado &

Innovac Tecnol CONICET Ave Libertad 5400 W3404AAS Corrientes Argentina;

Univ Nacl Cordoba Inst Fis Enrique Gaviola Fac Matemat Astron Fis &

Comp CONICET Av Medina Allende S-N Ciudad Univ X5000HUA Cordoba Argentina;

Univ Nacl Nordeste Fac Ciencias Exactas &

Nat &

Agrimensura Inst Modelado &

Innovac Tecnol CONICET Ave Libertad 5400 W3404AAS Corrientes Argentina;

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原文格式 PDF
正文语种 eng
中图分类物理学;
关键词
quantum dots; optimal control theory; quantum control;

机译：量子点;最优控制理论;量子控制;

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专利

1. Fast optical control of a coded qubit in a triple quantum dot [J] . Acosta Coden Diego S., Gomez Sergio S., Romero Rodolfo H., Physica Scripta: An International Journal for Experimental and Theoretical Physics . 2019,第2期

机译：在三量子点中的编码量子位快速控制
2. Optically engineered ultrafast pulses for controlled rotations of exciton qubits in semiconductor quantum dots [J] . Angela Gamouras, Reuble Mathew, Kimberley C. Hall Journal of Applied Physics . 2012,第1期

机译：光学设计的超快脉冲，可控制半导体量子点中激子量子位的旋转
3. Ultrafast optical control of individual quantum dot spin qubits [J] . Greve K.D., Press D., McMahon P.L., Reports on Progress in Physics . 2013,第9期

机译：单个量子点自旋量子位的超快光学控制
4. Ultrafast optical control of individual electron and hole spin qubits; entanglement between a single quantum dot electron spin and a downconverted, 1560 nm single photon [C] . Kristiaan De Greve, Peter L. McMahon, Leo Yu, Advances in photonics of quantum computing, memory, and communication VI . 2013

机译：单个电子和空穴自旋量子位的超快光学控制；单量子点电子自旋与下转换的1560 nm单光子之间的纠缠
5. Spin qubits in double and triple quantum dots. [D] . Medford, James Redding. 2013

机译：在双量子点和三量子点中旋转量子位。
6. Corrigendum: Ultrafast universal quantum control of a quantum-dot charge qubit using Landau–Zener–Stückelberg interference [O] . Gang Cao, Hai-Ou Li, Tao Tu, -1

机译：更正：利用Landau-Zener-Stückelberg干涉对量子点电荷量子位的超快速通用量子控制
7. Charged-impurity-induced dephasing of a voltage-controlled coded qubit based on electron spin in a triple quantum dot [O] . Puerto Gimenez, Irene, Hsieh, Chang-Yu, Korkusinski, Marek, 2009

机译：基于三量子点中电子自旋的带电杂质诱导的电压控制编码qubit移相
8. Fast Optically Driven Spin Qubit Gates in an InAs Quantum Dot. [R] . Kim, E. D., Truex, K., Xu, X., 2010

机译：Inas量子点中的快速光学驱动自旋Qubit门。

Fast optical control of a coded qubit in a triple quantum dot

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