Entangled photons and ultracold atoms for studies of fundamental quantum mechanics and applications to quantum information

纠缠光子和超冷原子用于基础量子力学研究和量子信息应用

• 批准号: 194094-2010
• 负责人: Steinberg, Aephraim
• 金额: $ 9.69万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=546046
• 关键词: Entangled; photons; ultracold; atoms; studies

My research group uses both entangled photons and ultracold atoms to study novel quantum phenomena, specifically in relation to the challenges and questions raised by the exciting new applications in quantum information science, and to studying foundational issues in quantum mechanics. Over the past 15 years, experimental capabilities for control of quantum systems have reached a level that makes it reasonable to expect widespread applications, ranging from quantum information processing to coherent control of reactions to quantum simulations of previously intractable systems. In particular, it is now well understood that quantum information is qualitatively different from its classical cousin, and a large international effort aims at building the systems which will allow us to take advantage of the exponential power of quantum information processing. Over the next five years, we propose principally to (1) develop advanced techniques for generating novel multi-photon entangled states, and investigate their properties and applications; (2) use our optical lattice experiment to further study quantum control and measurement techniques in the context of the long-term problem of controlling quantum devices; (3) use our newly-developed atom-ready source of quantum light in conjunction with our ultracold atoms to study new paradigms in quantum light-matter interactions; (4) use the interactions of our Bose-Einstein condensate with time-dependent potentials to address long-standing questions over tunneling times and other fundamental issues in quantum mechanics; and (5) continue our optical studies of different paradigms of applied quantum measurement. Goal (3) is a particularly timely quest, as recent proposals make it look like optical nonlinearities at the quantum level may be within reach, and have also shown how they could be used to build a quantum computer. Having developed a system for producing some of the coldest atoms in the universe, along with the highest-spectral-brightness source of entangled photons in the world, we are in an excellent position to take on this exciting challenge.

我的研究小组使用纠缠光子和超冷原子来研究新的量子现象，特别是与量子信息科学中令人兴奋的新应用所提出的挑战和问题有关，以及研究量子力学中的基础问题。 在过去的15年里，控制量子系统的实验能力已经达到了一个合理的水平，可以期待广泛的应用，从量子信息处理到反应的相干控制，再到以前难以处理的系统的量子模拟。 特别是，现在人们已经很好地理解，量子信息与其经典表亲在性质上是不同的，国际上的一项重大努力旨在建立一个系统，使我们能够利用量子信息处理的指数能力。 在未来五年中，我们的主要目标是：（1）发展先进的多光子纠缠态的制备技术，并研究其性质和应用;（2）利用我们的光晶格实验，进一步研究量子控制和测量技术，以解决量子器件的长期控制问题;（3）利用我们新开发的原子就绪量子光源与我们的超冷原子结合，研究量子光-物质相互作用的新范式;（4）利用我们的玻色-爱因斯坦凝聚与含时势的相互作用来解决长期存在的隧道时间问题和量子力学中的其他基本问题;（5）继续我们对应用量子测量的不同范例的光学研究。 目标（3）是一个特别及时的探索，因为最近的提议使量子水平的光学非线性看起来可能是可以实现的，并且还展示了它们如何用于构建量子计算机。 我们已经开发了一个系统，可以产生宇宙中最冷的原子，沿着世界上光谱亮度最高的纠缠光子源，我们处于一个非常好的位置来接受这个令人兴奋的挑战。