Multi-photon nonclassical states of light based on high-gain parametric down-conversion

基于高增益参量下转换的多光子非经典光态

• 批准号: 289382956
• 负责人: Professorin Dr. Maria Chekhova, Ph.D.
• 金额: --
• 依托单位: Max-Planck-Institut für die Physik des Lichts
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/289382956?language=en
• 关键词: Multi; photon; nonclassical; states; light

The development of quantum information technologies, with the ultimate goals being long-distance quantum cryptography and scalable quantum computation, led to the search for macroscopic systems manifesting truly quantum behavior. There are various signs of quantum behavior, among them entanglement, violation of Bell inequalities and, most challenging, negative valued quasi-probability distributions. Currently, nonclassical features have been observed for very few macroscopic (bright) states of light. One of them is bright squeezed vacuum (BSV), a state produced as a result of high-gain parametric down-conversion. In particular, for the BSV state sub-shot-noise photon-number correlations and macroscopic entanglement have been observed, and even violation of the Bell inequality has been recently predicted.The project is aimed at producing novel nonclassical and, as an ultimate goal, non-Gaussian states of light using high-gain parametric down-conversion. The research is planned for 36 months and will consist of experiments on the generation, detection, and nonlinear conversion of BSV.The research will be performed in collaboration with the theoretical team from Lomonosov Moscow State University, guided by Prof. Farid Khalili. The basis for the project was founded during the last stay of Prof. Khalili in Friedrich-Alexander Universität Erlangen - Nürnberg in the framework of the DFG Research Initiation Grant.

量子信息技术的发展，最终目标是长距离量子密码学和可扩展的量子计算，导致了对表现出真正量子行为的宏观系统的探索。量子行为有各种各样的迹象，其中包括纠缠、违反贝尔不等式，以及最具挑战性的负值准概率分布。目前，已经观察到非常少的宏观（亮）态光的非经典特征。其中之一是亮压缩真空（BSV），这是一种由高增益参量下转换产生的状态。特别地，对于BSV态，亚散粒噪声光子数关联和宏观纠缠已经被观察到，甚至最近已经预言了Bell不等式的违反。该项目旨在利用高增益参量下转换产生新的非经典光态，作为最终目标，非高斯光态。该研究计划为期36个月，将包括BSV的产生、检测和非线性转换实验。该研究将与来自罗蒙诺索夫莫斯科州立大学的理论团队合作，由Farid Khalili教授指导。该项目的基础是在DFG研究启动赠款框架内，Khalili教授在弗里德里希-亚历山大大学埃尔兰根-纽伦堡的最后一次逗留期间建立的。

项目成果

Multiphoton Effects Enhanced due to Ultrafast Photon-Number Fluctuations.

• DOI: 10.1103/physrevlett.119.223603
• 发表时间: 2017-05
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: K. Spasibko;D. Kopylov;V. Krutyanskiy;T. Murzina;G. Leuchs;M. Chekhova

Study of broadband multimode light via non-phase-matched sum frequency generation

通过非相位匹配和频产生宽带多模光的研究

• DOI: 10.1088/1367-2630/ab0a7c
• 发表时间: 2019
• 期刊: New Journal of Physics
• 影响因子: 3.3
• 作者: Denis Kopylov;Kirill Spasibko;Tatiana Murzina;Maria Chekhova
• 通讯作者: Maria Chekhova

Detection Loss Tolerant Supersensitive Phase Measurement with an SU(1,1) Interferometer.

• DOI: 10.1103/physrevlett.119.223604
• 发表时间: 2017-05
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: M. Manceau;G. Leuchs;F. Khalili;M. Chekhova

Improving the phase super-sensitivity of squeezing-assisted interferometers by squeeze factor unbalancing

• DOI: 10.1088/1367-2630/aa53d1
• 发表时间: 2016-07
• 期刊: New Journal of Physics
• 影响因子: 3.3
• 作者: M. Manceau;F. Khalili;M. Chekhova

Orbital angular momentum modes of high-gain parametric down-conversion

• DOI: 10.1088/2040-8986/aa600f
• 发表时间: 2016-12
• 期刊: Journal of Optics
• 影响因子: 2.1
• 作者: Lina Beltran;Gaetano Frascella;A. Pérez;R. Fickler;P. Sharapova;M. Manceau;O. Tikhonova;R. Boyd;G. Leuchs;M. Chekhova