ITR: Quantum Computing Using Electrons on Helium Films

题目：ITR：利用氦薄膜上的电子进行量子计算该项目是一项结合实验和理论的研究工作，旨在制造和研究基于氦薄膜上的电子的相互作用量子比特（量子位）系统，该系统覆盖了一系列微电极，并开发控制该系统的方法。特别是，该团队正在研究适合量子比特操作的配置中的激发态的寿命和相干时间，包括电子-电子相互作用，平面内约束和磁场的影响。广泛的物理问题，如量子局域化和相互作用激发的受控系统中的混沌也在研究中。该项目的重点是1)在微点上捕获电子，2)通过微点电位控制目标电子的能级间距，3)通过适当定制的共振微波辐射脉冲和微点电位在单个量子位上选择性地写入信息4)在两个量子位系统上进行逻辑运算5)通过检测从表面释放的单个电子或通过底层微点确定电子在能级上的分布来读取量子寄存器，以期建立一个具有大量量子位的系统，用于多量子位量子计算机。如果成功，这样的计算机可以主要使用传统技术制造，并且可以在商用冰箱可以达到的温度下运行。

EIA-0085922Arnold J, DahmCase Western Reserve UniversityTitle: ITR: QUANTUM COMPUTING USING ELECTRONS ON HELIUM FILMSThis project is a combined experimental and theoretical research effort to manufacture and investigate a system of interacting quantum bits (qubits) based on electrons on a helium film which covers an array of micro electrodes, and to develop methods for controlling this system. In particular, the team is studying the lifetimes and coherence times of the excited state in configurations suitable for qubit operation, including effects of electron-electron interaction, in-plane confinement, and a magnetic field. Problems of broad physical interest, such as quantum localization and chaos in a controlled system with interacting excitations is also being investigated. The project is focused on 1) trapping the electrons over micro dots, 2) controlling the energy-level spacing of targeted electrons by the microdot potential, 3) selective writing of information on individual qubits by appropriately tailored pulses of resonant microwave radiation and microdot potential 4) logical operations on a system of two qubits and 5) reading out the quantum register by detecting single electrons released from the surface or determining the electron distribution over energy levels with underlying micro dots, with a hope of building a system with a large number of qubits to be used as a multi-qubit quantum computer. If successful, such a computer can be manufactured using mainly conventional technologies and can operate at a temperature accessible with commercial refrigerators.