CAPACITIVE COUPLING FOR FLUX QUBITS

通量量子位的电容耦合

• 批准号: 2326941
• 金额: --
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 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=studentship-2326941
• 关键词: CAPACITIVE; COUPLING; FLUX; QUBITS

Current quantum annealers based on flux qubits feature only inductive coupling, resulting in a ZZ interaction (where Z is the computational basis). For future quantum annealers to solve problems which are out of the reach of the classical quantum Monte Carlo algorithm, qualitatively different interactions are additionally required. One such interaction is the YY interaction which can be implemented by capacitive coupling between the charge degree of freedom for flux qubits. We will design, fabricate and characterise a voltage-tuneable non-linear capacitive coupler for flux qubits based on the single Cooper-pair transistor.

目前基于通量量子比特的量子退火器仅具有电感耦合，导致ZZ相互作用（其中Z是计算基础）。对于未来的量子退火机来解决经典量子蒙特卡罗算法无法解决的问题，还需要质的不同的相互作用。一种这样的相互作用是YY相互作用，其可以通过通量量子位的电荷自由度之间的电容耦合来实现。我们将设计、制作并实现一种基于单库珀对晶体管的磁通量子比特电压可调非线性电容耦合器。