NER: Experimental Realization of Protected Qubits

NER：受保护量子的实验实现ID：508129 PI名称：M.Gershenson，实验室：罗格斯大学。新泽西州最近发现的几种强大的量子算法表明，在解决许多困难的问题方面，“量子力学”计算机可能比传统的经典计算机具有巨大的优势。然而，为了成功地实现量子计算，量子计算机元件(又名：量子比特)应该与环境充分分离(“保护”)。这项提议的最终目标是开发第一个可伸缩的量子计算元件，充分保护其免受环境噪声的影响。所提出的固态实现“顽固”薛定谔猫的方法是基于受非平凡对称性保护的纳米级约瑟夫森结。发展一种易于制作的受保护超导量子比特的设计和这种新型纳米器件的制备将是成功实现量子计算的关键。拟议的实验将为弦理论中发展的基于对称性的保护思想的物理实现提供一个试验场，目的是将它们应用于计算机科学。这项研究的实施将有助于更好地理解在低温下工作的众多量子纳米器件中的退相干过程。由多个组成部分组成的教育和推广方案是该项目的重要组成部分，其目的是培养人们对纳米科学的认识，制定纳米科学和纳米工程方面的创新课程和培训模块，并传播这些课程，以期培养更具科学素养的普通公众。

ABSTRACTTITLE: NER: EXPERIMENTAL REALIZATION OF PROTECTED QUBITSPROJECT ID: 508129PI NAME: M. GERSHENSON,INSTUTUTION: RUTGERS UNIVERSITY. NJThe recent discovery of several powerful quantum algorithms indicates that a "quantum-mechanical" computer might have an enormous advantage over its conventional classical counterpart in solving many difficult problems. However, for successful implementation of quantum computing, the quantum computer elements (a.k.a. qubits) should be sufficiently decoupled ("protected") from the environment. The ultimate goal of this proposal is to develop the first scalable element for quantum computation that would be sufficiently protection from environmental noise. The proposed approach to the solid-state realization of a "die-hard" Schrodinger cat is based on nanoscale Josephson junctions protected by nontrivial symmetries. Development of a fabrication-friendly design of protected superconducting qubits and fabrication of this novel nanodevice will be crucial for successful realization of quantum computation. The proposed experiments will provide a testing ground for the physical realization of ideas of symmetry-based protection developed in string theory, with the aim of applying them towards computer science. Implementation of the proposed research will contribute to better understanding of the decoherence processes in numerous quantum nanodevices operating at low temperatures. The multi-component Educational and Outreach Program, an essential part of the project, is designed to nurture an appreciation for nanoscience, to develop innovative curricula and training modules in nanoscience and nano-engineering, and to disseminate the curricula with a view of creating a more scientifically literate general public.