PIF: Few Electron Logical Qubits and Cross Chip Shuttling of Quantum Information

PIF：很少的电子逻辑量子位和量子信息的跨芯片穿梭

• 批准号: 0653336
• 负责人: Amir Yacoby
• 金额: $ 15万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2010-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0653336&HistoricalAwards=false
• 关键词: PIF; Few; Electron; Logical; Qubits

The research project centers around producing mesoscopic few electron devices inorder to experimentally test coherent control and shuttling of few electron spin qubits.The spin and position information will be determined using quantum point contactlistening devices situated adjacent to the quantum dots. High frequency pulses will beused in order to control and transfer electrons among the different locations.The overall importance of the proposed research project is to extend our understandingof the limiting factors that determine spin coherence lifetime of stationary and flying fewelectron spin qubits. In the solid state, complicated interactions among electrons andbetween the electrons and their host material result in decoherence. In GaAs, spindecoherence is caused by the hyperfine interactionsbetween the electron and the host nuclei. Here we shall use the higher degree ofsymmetry offered by few electron qubits in order to overcome such sources ofdecoherence.

该研究项目围绕制造介观少电子设备，以实验测试少电子自旋量子比特的相干控制和穿梭。自旋和位置信息将使用位于量子点附近的量子点接触监听设备来确定。高频脉冲将被用来控制和转移不同位置的电子。该研究项目的总体重要性是扩大我们对决定静止和飞行的几个电子自旋量子比特的自旋相干寿命的限制因素的理解。在固体状态下，电子之间以及电子与其主体材料之间的复杂相互作用导致了退相干。在砷化镓中，自旋退相干是由电子与主核之间的超精细相互作用引起的。这里，我们将利用少数几个电子量子比特提供的更高的对称度来克服这种消相干源。