Manipulating Quantum Information with Vibrational Qubits

用振动量子位操纵量子信息

• 批准号: 1012075
• 负责人: Dmitri Babikov
• 金额: $ 48.05万
• 依托单位: Marquette University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-10-01 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1012075&HistoricalAwards=false
• 关键词: Manipulating; Quantum; Information; Vibrational; Qubits

Dmitri Babikov of Marquette University and Martin Gruebele of the University of Illinois, Urbana-Champaign are supported by an award from the Theory, Models and Computational Methods program of the Chemistry division to develop computational methodologies to study the problem of encoding information in vibrational wave packets by entangling polyatomic vibrations. The PI's goal is to assess whether molecules or molecular ions could help quantum information processing. Some of the theoretical predictions are tested using experiments carried out on jets of neutral molecules at low temperature. Although these test experiments do not correspond to true quantum computing, they allow achieving and utilizing a high degree of coherence. They also give rise to important information on how the coherent vibrational wave packets evolve as well as the effect of various sources of dephasing. Theory and experiment are combined to achieve gates with up to 4 qubits (e.g. Shor's algorithm for factorizing the number 15) with rotationally and vibrationally excited states of the thiophosgene molecule. The PIs and their students study the effects of decoherence induced by molecular rotations, field inhomogeneities, and vibrational states not part of the computing states are being explored. Quantum computing and quantum information are emerging fields that attempt to use the special, and often non-intuitive, properties of quantum mechanics to enable calculations that are very difficult or even impossible using current technology. Experimental demonstration of vibrational QC using a polyatomic molecule opens up new opportunities for the practical realization of a quantum processor. A series of interdisciplinary seminars are planned to take place at both Marquette University and the University of Illinois at Urbana-Champaign on the topics of Quantum Control and Quantum Information.

马奎特大学的Dmitri Babikov和伊利诺伊大学厄巴纳-香槟分校的Martin Gruebele获得了化学系理论、模型和计算方法项目的一个奖项的支持，以开发计算方法来研究通过纠缠多原子振动来编码振动波包中信息的问题。 PI的目标是评估分子或分子离子是否有助于量子信息处理。一些理论预测进行测试，在低温下的中性分子射流上进行的实验。虽然这些测试实验并不对应于真正的量子计算，但它们允许实现和利用高度的相干性。 它们还提供了关于相干振动波包如何演化以及各种退相源的影响的重要信息。理论和实验相结合，以实现门与多达4个量子位（例如，肖尔的算法，用于因式分解的数字15）与硫光气分子的旋转和振动激发态。PI和他们的学生研究由分子旋转，场不均匀性和振动状态引起的退相干的影响，这些不属于正在探索的计算状态。 量子计算和量子信息是新兴的领域，试图使用量子力学的特殊且通常非直观的性质来实现使用当前技术非常困难甚至不可能的计算。 使用多原子分子的振动QC的实验演示为量子处理器的实际实现开辟了新的机会。 一系列跨学科研讨会计划在马奎特大学和伊利诺伊大学厄巴纳-香槟分校举行，主题是量子控制和量子信息。