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美国普渡大学招收量子光力学和冷原子相关方向博士后和博士生
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The Purdue University’s Quantum Foundations and Quantum Photonics Laboratory (Prof. Tongcang Li’s group) has open positions for self-motivated excellent postdocs, graduate students, visiting students and visiting scholars starting from 08/2014. Tongcang Li Assistant Professor of Physics and Astronomy Assistant Professor of Electrical and Computer Engineering Purdue University Email: tcli@purdue.edu https://sites.google.com/site/litongcang/ Selected publications: 1. Peng Zhang, Tongcang Li, Jie Zhu, et al. Nature Communications, forthcoming (2014) 2. S. Kheifets, A. Simha, K. Melin, Tongcang Li, M. G. Raizen. Science, 343, 1493 (2014) 3. Tongcang Li, Z.-X. Gong, Z.-Q. Yin, et al. Phys. Rev. Lett., 109, 163001 (2012) (cover story) 4. Peng Zhang, Yi Hu, Tongcang Li, et al. Phys. Rev. Lett. 109, 193901 (2012) (cover story) 5. Tongcang Li, Simon Kheifets, Mark G. Raizen, Nature Physics, 7, 527 (2011) 6. Tongcang Li, S. Kheifets, D. Medellin, and M. G. Raizen. Science, 328, 1673 (2010) Research topics include but are not limited to: 1. Quantum spin-optomechanics of levitated nanodiamonds A levitated nanodiamond with a built-in NV center is an analog of an atom trapped in vacuum, but provides a much larger mass for studying macroscopic quantum mechanics. It eliminates the physical contact inherent to clamped cantilevers and has internal electronic states for convenient quantum control. These properties enable unprecedented force sensitivity and the creation of large spatial superposition states. These large spatial superposition states can be used to study objective collapse theories of quantum mechanics, which propose that the Schrodinger equation is only an approximate theory that breaks down when objects above a critical mass are delocalized over a critical distance. 2. Interfacing cold atoms and plasmonic nanostructures The coupling between atoms and photons is essential for many applications in quantum information science. Here we plan to couple atoms to nano-plasmonic structures. Because of their large negative electric permittivity, metallic structures can support plasmonic resonances that confine photons below diffraction limit. This strong confinement of photons can dramatically enhance the interacting between photons and atoms, reduce the size of the device, and thus increase the scalability for studying quantum optics and many-body physics. |
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本科或硕士是凝聚态方向完全没问题。关键是内心要热爱科学研究，做事认真负责，同时思维活跃。 我的本科就是凝聚态专业，发过几篇自旋电子学和碳纳米管的论文。博士前几年做冷原子实验，后来把冷原子和凝聚态相结合，提出并开始了真空中激光束缚和冷却微纳粒子的实验。博士毕业后去了一个纳米光学实验室做博士后，现在去普渡大学物理和天文系以及电子工程和计算机系做双聘助理教授。 我有两个重要工作都是凝聚态和原子、分子、光学相结合的：1. 用超精密激光光镊测量了微粒布朗运动的瞬时速度，完成了这个爱因斯坦在100多年前认为是不可能完成的任务。这个工作发表在Science杂志并被该杂志推荐为高中和大学教学内容： Experiments Einstein Could Only Dream Of：Measurement of the Instantaneous Velocity of a Brownian Particle. http://scienceintheclassroom.org/?tid=18 2. 首次提出用超冷离子来制备“时空晶体”。这个工作发表在Phys Rev Lett 封面，被Nature等杂志广泛报道，并被Discover旗下频道拍摄纪录片。Nature： Building a space-time crystal. http://www.nature.com/nature/journal/v491/n7422/full/491011c.html 美国普渡大学拥有自己的飞机场，培养了人类登月第一人阿姆斯特朗，中国原子弹之父邓稼先（1950年博士毕业于普渡大学物理系）等人。有5名校友得过诺贝尔物理学奖，它的电子工程和计算机系在美国排名前十，发明了全电子电视机，维基（wiki）等技术，是做前沿科学研究的好地方。 |
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