EAGER: New lower-cost technology to produce many entangled photons and test their properties

题目：产生许多纠缠光子并测试其特性的低成本新技术量子纠缠的新科学开辟了各种各样的新兴和可能的技术，如量子计算，安全量子通信，量子成像，量子光刻（纳米制造的一种方法）等。产生两个纠缠光子的成本是这些技术发展和使用的关键驱动因素。这个PI在生产高精度纠缠光子方面一直处于世界领先地位。他（和另外两个小组）也已经能够产生三个纠缠光子。他最近取得了一项突破，实验证明，通过一种全新的技术产生两个纠缠的光子，这将大大降低成本，并为在可接受的成本和精度下纠缠两个以上的光子打开了大门。在这个项目中，他计划证明这一承诺是真实的，并进行新的基础物理学研究，使更多纠缠光子的可用性成为可能。希望这些新的研究将为基于使用两个以上纠缠光子的量子技术的新范式和新技术打开大门。过去的三个纠缠光子的演示（在中国四川省的一个大型实验室中）依赖于复杂的系统，使用非线性晶体中的四波混频的多个步骤。这项新技术利用热效应和噪声消除来达到同样的效果。在实验中，它准确地再现了通常的双光子贝尔双符合率。在这项工作的第一阶段，PI将产生GHZ的“phi”状态，并执行相当于贝尔定理的实验，但有三个偏振器，并改变偏振器到达的顺序，作为基本原理的测试。然后，他将进一步展示越来越多的纠缠光子，最多超过100个，并进行与可能的应用相关的实验。

Title: New lower-cost technology to produce many entangled photons and test their propertiesThe new science of quantum entanglement has opened up a wide variety of new, emerging and possible technologies, such as quantum computing, secure quantum communication, quantum imaging, quantum lithography (an approach to nanofabrication) and others. The cost of producing two entangled photons is a crucial driver in the development and use of these technologies. This PI has been one of the world leaders in producing high-precision entangled photons. He (along with two other groups) has also been able to produce three entangled photons. He has had a recent breakthrough, proven in experiment, for producing two entangled photons by a radically new technology, which promises a great reduction in cost, and also opens the door to entangling more than two photons at an acceptable cost and precision. In this project, he plans to demonstrate that this promise is real, and to undertake new studies of fundamental physics made possible by the availability of more entangled photons. It is hoped that these new studies will open the door to new paradigms and technologies in quantum technology, based on the use of more than two entangled photons.Past demonstrations of three entangled photons (in a large laboratory in Sichuan province of China) have relied on complicated systems using multiple steps of four-wave mixing in nonlinear crystals. This new technique uses thermal effects and noise cancellation to achieve the same effect. In experiment, it accurately reproduces the usual two-photon Bell double coincidence rate. In the first stage of this work, the PI will produce the GHZ "phi" state, and perform the equivalent of the Bell's Theorem experiment but with three polarizers, and varying the order at which the polarizers are reached, as a test of fundamental principles. He will then progress to demonstrating larger and larger numbers of entangled photons, up to more than 100, and performing experiments relevant to possible applications.