SGER: Compact waveguide based source of quadrature squeezing and entanglement

0533472 Saffman这个SGER研究项目将展示一个紧凑的压缩和纠缠光源，用于量子通信和测量。近年来，由于量子信息和通信的出现，非经典光的应用变得越来越重要，成为研究和发展的主要领域。本文提出的研究将导致紧凑的连续变量压缩源和纠缠的基础上的二次谐波产生的KNbO 3波导嵌入在一个优化的自成像环形谐振腔。该项目有几个新的特点，使其有别于其他现有的研究。所有先前的纠缠源的演示都使用了参数下转换。在腔内和单程几何中，人们已经预言了二次谐波产生中的空间压缩和纠缠，但从未观测到。谐波产生的应用大大拓宽了应用范围，因为它将使量子源在新的波长上可用。拟议活动的智力价值是研究和演示X（2）非线性相互作用中的空间非经典光和纠缠。PI将研究一种新的压缩和纠缠产生机制，这是空间调制不稳定性的结果。将量子光学效应扩展到空间域是研究非经典场的基本兴趣，并可能在量子信息传输和精确测量中实现新的应用。拟议活动的更广泛影响将是进一步提高PI操纵和控制光场的能力。这一奋进的成功可能会导致新的紧凑型非经典光源在量子通信和量子有限测量中的应用。这项研究将在威斯康星州-麦迪逊大学进行，将使本科生和研究生接触最先进的技术和工具，并培养他们为社会的技术和科学发展做出贡献。

0533472SaffmanThis SGER research project will demonstrate a compact source of squeezed and entangled light forapplications in quantum communication and measurement. Applications of non-classical light have takenon increased importance in recent years due to the emergence of quantum information and communicationas major areas of research and development. The research proposed here will result in compact sources ofcontinuous variable squeezing and entanglement based on second harmonic generation in a KNbO3 waveguide embedded in an optimized self-imaging ring resonator. There are several novel features of this project that distinguish it from other existing research. All prior demonstrations of entangled sources have used parametric downconversion. Spatial squeezing and entanglement in second harmonic generation have been predicted in intracavity and single pass geometries, but never observed. The use of harmonic generation greatly widens the scope of applications since it will make quantum sources available at new wavelengths.The intellectual merit of the proposed activity is the study and demonstration of spatial nonclassicallight and entanglement in X(2) nonlinear interactions. The PI will investigate a new mechanism of squeezing and entanglement generation that is the result of a spatial modulational instability. Extension of quantum optical effects to the spatial domain is of fundamental interest in the study of non-classical fields and may enable new applications in quantum information transmission, and precision measurements.The broader impact of the proposed activity will be in the furthering of the PI's ability to manipulate andcontrol optical fields. Success in this endeavor may result in new compact sources of nonclassical light forapplications in quantum communication and quantum limited measurements. The research to be performedat The University of Wisconsin - Madison will expose undergraduate and graduate students to state of theart techniques and tools, and train them to contribute to the technological and scientific development ofsociety.