Multiplexed Quantum Integrated Circuits

多路复用量子集成电路

• 批准号: EP/S019324/1
• 负责人: Charles Smith
• 金额: $ 119.84万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FS019324%2F1
• 关键词: Multiplexed; Quantum; Integrated; Circuits

The low-temperature multiplexer for quantum devices has allowed competing theories regarding quantum transport in interacting low-dimensional systems to be tested against experiment and because of the large numbers of devices that can be tested at once, a statistical approach to quantum nano-device physics discovery can be used. We induced superconductivity in two-dimensional electron gases and are searching for Majorana fermions. In this project, we want to proceed on several fronts, all using integrated circuits of split-gate transistors, to explore new physics, new technology and new electronics. This project will be supplemented (by other local projects and by the input from others using our facilities) so that most of the following topics will be pursued over the next three years: (* = core part of this project)1. A gigahertz multiplexer*2. Superconducting/semiconducting integrated circuits including topological insulator material addressed using the multiplexer*3. Nanowire integrated circuits coupled to superconductors for investigating how robust Majorana modes are and exploring whether they could be reliably used for quantum technology*4. Independent biasing through specific charge storage on each gate 5. Nanoscale multiplexer 6. A voltage camera circuit on the micron-scale7. Multiplexers with induced 2DEGs to reduce fluctuations* 8. Single electron pumping in quantum dots in parallel to provide high current high accuracy pumps for a current standard*9. Setting up a facility for external users*

量子器件的低温多路复用器允许相互作用的低维系统中量子输运的竞争理论进行实验测试，并且由于可以同时测试大量器件，因此可以使用量子纳米器件物理发现的统计方法。我们在二维电子气中诱导了超导性，并正在寻找马约拉纳费米子。在这个项目中，我们希望在几个方面进行，都使用分裂栅极晶体管的集成电路，探索新物理，新技术和新电子学。该项目将得到补充（通过其他当地项目和其他使用我们设施的人的投入），以便在未来三年内继续研究以下大部分主题：（* =该项目的核心部分）1.千兆赫多路复用器 *2。超导/半导体集成电路，包括拓扑绝缘体材料使用多路复用器寻址 *3。纳米线集成电路耦合到超导体，用于研究马约拉纳模式的鲁棒性，并探索它们是否可以可靠地用于量子技术 *4。通过每个栅极5上的特定电荷存储的独立偏置。纳米级多路复用器6.微米级的电压摄像机电路7.具有感应2DEG的多路复用器可减少波动 * 8。量子点中的单电子泵浦并联，为电流标准提供高电流高精度泵浦 *9。为外部用户设置设施 *

项目成果

Sachdev-Ye-Kitaev Circuits for Braiding and Charging Majorana Zero Modes.

• DOI: 10.1103/physrevlett.128.106805
• 发表时间: 2020-12
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: Jan Behrends;B. B'eri

Integrated, Portable, Tunable, and Coherent Terahertz Sources and Sensitive Detectors Based on Layered Superconductors

• DOI: 10.1109/jproc.2019.2958810
• 发表时间: 2020-05-01
• 期刊: PROCEEDINGS OF THE IEEE
• 影响因子: 20.6
• 作者: Delfanazari, Kaveh;Klemm, Richard A.;Kadowaki, Kazuo
• 通讯作者: Kadowaki, Kazuo

Active Terahertz Modulator and Slow Light Metamaterial Devices with Hybrid Graphene-Superconductor Photonic Integrated Circuits.

• DOI: 10.3390/nano11112999
• 发表时间: 2021-11-08
• 期刊: Nanomaterials (Basel, Switzerland)
• 作者: Kalhor S;Kindness SJ;Wallis R;Beere HE;Ghanaatshoar M;Degl'Innocenti R;Kelly MJ;Hofmann S;Joyce HJ;Ritchie DA;Delfanazari K
• 通讯作者: Delfanazari K

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform.

超导二维电子气平台上的可扩展量子集成电路。

• DOI: 10.3791/57818
• 发表时间: 2019
• 期刊: JoVE
• 作者: Delfanazari K

Quantized conductance in hybrid split-gate arrays of superconducting quantum point contacts with semiconducting two-dimensional electron systems

超导量子点与半导体二维电子系统接触的混合分栅阵列中的量子化电导

• DOI: 10.1103/physrevapplied.21.014051
• 发表时间: 2024
• 期刊: Physical Review Applied
• 影响因子: 4.6
• 作者: Delfanazari K