FRG: Center for Quantum Information Physics

* 非技术摘要 * 这笔赠款将支持耶鲁大学量子信息物理中心（CQuIP）。 CQuIP的研究正在探索有望用于大规模量子信息处理的系统。量子效应的使用使新的能力，如安全通信没有加密密钥;指数加速某些计算任务;等等，然而，这些优势只能完全实现与量子比特系统（量子计算中的对应物在经典计算中的信息位），更好地控制，并在更大的网络互连，比现在可能的。 本项目将解决这两个问题。 实验研究将推进在几个系统中控制量子比特的最新技术，包括超导电路;被激光或芯片上的微电极捕获的单个分子;微机械杠杆;以及使用磁共振方法操纵的原子核。 这项工作的一个关键目标是开发改进的方法，使这些系统相互连接，并使用光子（光的粒子）与外部世界连接。 微波是一种以低得多的频率振荡的光，该项目将涉及微波和光子的使用。为了支持实验工作，理论研究将研究改进量子比特控制和网络的新思路。 CQuIP努力的一个主要部分是年轻研究人员的教育（博士）。学生，博士后研究员和本科生），让他们直接参与研究。 通过参与这项研究，他们将在学术界，工业界或政府实验室的未来职业生涯。 该项目得到了材料研究部和物理部的支持。*技术摘要 * 这笔赠款将支持耶鲁大学量子信息物理中心（CQuIP）。 CQuIP的研究正在从理论和实验上探索几个系统的物理学，这些系统有望用于大规模量子信息处理。量子效应的使用使新的能力，如安全通信没有加密密钥;指数加速某些计算任务;等等，然而，这些优势只能完全实现与量子比特系统，更好地控制，并在更大的网络互连，比现在可能的。 本项目将解决这两个问题。基于超导电路和捕获极性分子的量子比特的进一步发展将提高量子信息存储和处理的保真度。 复杂的量子态的操纵和转移将使用光学和微波光子，耦合到电气和/或微机械设备。 将使用耦合核自旋来探索控制大型量子网络的局限性。 最后，将设计方案，使用极性分子系统作为量子比特，以实现最近的想法复杂的多体拓扑状态的信息存储。 CQuIP努力的一个主要部分是年轻研究人员的教育（博士）。学生，博士后研究员和本科生），让他们直接参与研究。 通过参与这项研究，他们将在学术界，工业界或政府实验室的未来职业生涯。 该项目得到了材料研究部和物理部的支持。

****NON-TECHNICAL ABSTRACT****This grant will support the Center for Quantum Information Physics (CQuIP) at Yale University. Research in CQuIP is exploring systems with promise for use in large-scale quantum information processing. The use of quantum effects enables new capabilities such as secure communication without cryptographic keys; exponential speedup of certain computational tasks; etc. However, these advantages can only be fully realized with systems of quantum bits (the counterpart in quantum computing to the bit of information in classical computing) that are much better controlled, and interconnected in much larger networks, than is now possible. This project will address both issues. Experimental studies will advance the state of the art in controlling quantum bits in several systems, including superconducting circuits; individual molecules trapped by lasers or by microelectrodes on a chip; micromechanical cantilevers; and atomic nuclei manipulated using magnetic resonance methods. A key goal of this work is development of improved methods to interconnect such systems to each other, and to the outside world using photons (a particle of light). Microwaves are a form of light that oscillates at a much lower frequency and this project will involve the use of both microwave and optical photons. In support of the experimental work, theoretical research will investigate new ideas for improving both the control and the networking of quantum bits. A major part of the CQuIP effort is the education of young researchers (Ph.D. students, postdoctoral fellows, and undergraduates) by involving them directly in the research. Through participation in this research they will be propeared for future careers in academia, industry, or government laboratories. This project receives support from the Division of Materials Research and the Division of Physics.****TECHNICAL ABSTRACT****This grant will support the Center for Quantum Information Physics (CQuIP) at Yale University. Research in CQuIP is exploring, both theoretically and experimentally, the physics of several systems with promise for use in large-scale quantum information processing. The use of quantum effects enables new capabilities such as secure communication without cryptographic keys; exponential speedup of certain computational tasks; etc. However, these advantages can only be fully realized with systems of quantum bits that are much better controlled, and interconnected in much larger networks, than is now possible. This project will address both issues. Further development of quantum bits based on superconducting circuits and trapped polar molecules will advance the fidelity of quantum information storage and processing. The manipulation and transfer of complex quantum states will be demonstrated using both optical and microwave photons, coupled to electrical and/or micromechanical devices. Limitations to control of large quantum networks will be explored using coupled nuclear spins. Finally, schemes will be devised, using the system of polar molecules as qubits, to implement recent ideas for complex many-body topological states for information storage. A major part of the CQuIP effort is the education of young researchers (Ph.D. students, postdoctoral fellows, and undergraduates) by involving them directly in the research. Through participation in this research they will be propeared for future careers in academia, industry, or government laboratories. This project receives support from the Division of Materials Research and the Division of Physics.