原子与纳米光学波导单向耦合系统的手征量子光学性质及应用

This proposal will be devoted to studying the chiral quantum optical properties and their applications in the unidirectional dissipative coupling system between atomic chain or multilevel atoms and nano-waveguides. Through designing the appropriate array of waveguides to unidirectional couple with two-level atomic chain, the unidirectional dissipative coupled Heisenberg spin chain will be constructed. The properties of the quantum entanglement, quantum discord, quantum phase transition and many-body localization induced by the dissipation in these systems will be investigated in detail, which will provide a new platform for constructing the quantum network . The research on the chiral quantum optics properties of the unidirectional coupled systems between Alkali metal atoms and semi-infinite nanometer optical waveguide will be carried out. The new method for solving quantum non-Markovian master equation of the unidirectional dissipative system will be proposed. The relation between the atomic coherence in the ground state sub-energy level and the chiral degree and the Non-Makovianity will be analyzed. The new mechanism for the preparation of atomic spin squeezed states will be revealed. Meanwhile, new schemes will be proposed for the realization of the high sensitivity vector atomic magnetometer. The chiral quantum optical properties of the unidirectional coupling system between optical microcavity and atomic chain mediated by optical waveguide will be studied in detail. The atomic one-photon and multi-photon absorption spectra will be carried out under the driven by the nonclassical field generated from the cavity. The feasibility of the preparation of field-atomic chain into two-excitation or multi-excitation entangled dark states will be analyzed. New schemes for the generation of multiphoton with high quality will be proposed.

本申请项目拟研究原子链和多能级原子与纳米光学波导单向耗散耦合系统的手征量子光学性质及应用。通过设计恰当的波导阵列使其与多个二能级原子发生单向耦合，构建单向耗散耦合型海森堡自旋链，研究这些系统的量子纠缠、量子失谐、量子相变以及由耗散诱导的多体局域化等性质，为构建量子网络提供新方案；研究碱金属原子--半无界纳米光学波导这一单向耗散耦合系统的手征量子光学特性，发展求解单向耗散体系量子非马尔科夫主方程的新方法，分析原子基态磁子能级间的量子相干性与手征度及非马尔科夫度之间的关系，揭示将集合原子和原子链制备于基态磁子能级自旋压缩态的新机制，提出高灵敏度矢量原子磁力仪的新方案。考察光学微腔--光学波导—原子链单向耦合系统的手征量子光学性质，探讨在光学微腔中产生的非经典光场驱动下原子的单光子和多光子吸收性质，分析将光场--原子链制备于双激发或多激发纠缠暗态的可能性，提出获得高品质多光子源的新方案。

本项目已经按计划完成了相关的研究工作，同时将我们的研究工作拓展到纳米机械振子体系和光学波导手征耦合系统的量子性质等方面。在本项目的资助下，我们发表SCI论文18篇，其中在Phys. Rev. A发表论文10篇， 在Opt. Express上发表论文5篇。课题组先后有18名研究生参加了本项研究工作，其中5人获博士学位，9人获硕士学位。取得的主要成果包括： .（1）研究了多能级原子—光学波导手征相互作用系统中双光子荧光辐射的时序与不同辐射通道的量子干涉之间的关系，揭示出共振荧光由聚束效应转变成反聚束效应起源于双光子级联辐射通道具有相反且不平衡的辐射时序，提出了制备强关联双光子对的方案。.（2）通过定义光场的“多重波粒量子关联”函数来揭示原子—光学波导体系共振荧光的多光子关联特性，建立了原子共振光中三光子强关联辐射与原子内态条件动力学之间的联系。在腔量子电动力学系统中，提出了利用由准亚辐射态产生的超(巨)辐射来制备多光子态的新方案。.（3）研究了多原子—光学波导手征耦合系统荧光的频率滤波量子关联及其空间定向性，提出了实现量子天线的新方案。.（4）提出了一个基于双光子关联的量子导引判据，建议了利用手征耦合实现纳米机械振子之间的量子导引的新方案。.（5）研究了碱金属原子的激光—磁场的双共振作用下的吸收特性，提出了一种基于射频双光子过程测量射频磁场的新方案。