Quasi-one-dimensional diffuse laser cooling of atoms

Wan, Jinyin; Wang, Xin; Zhang, Xiao; Meng, Yu; Wang, Wenli; Sun, Yuan; Liu, Liang

doi:10.1103/physreva.105.033110

Cited by 12 publications

(3 citation statements)

References 25 publications

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“…We can further improve the transmission of cold-atom optical filter by increasing the optical thickness (OD), which is specifically influenced by the density of gas atoms and the length of atomic medium [42]. An ultranarrow-bandwidth filter with high transmission might reveal active optical frequency standard [43] without an additional locked pump laser.…”

Section: Discussionmentioning

confidence: 99%

Cold-atom optical filtering enhanced by optical pumping

et al. 2022

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Atomic optical filters such as Faraday anomalous dispersion optical filters (FADOFs) or similar technologies can achieve very narrow optical bandwidth close to the scale of atomic linewidth, which can be greatly reduced in cold atoms. However, limited by the number of cold atoms and the size of the cold atomic cloud, the number of atoms interacting with the laser is reduced, and the transmission remains as low as 2%. In this work, we introduce the optical pumping into the cold atomic optical filter to solve this problem. Circular polarized optical pumping can produce polarization of the atomic ensemble and induce dichromatic as well as the Faraday rotation. We demonstrate a cold-atom optical filter which operates on the 87Rb 52S1/2 (F=2) to 52P3/2 (F′=2) transition at 780 nm. The filter achieves an ultranarrow bandwidth of 6.6(4) MHz, and its peak transmission is 15.6%, which is nearly 14 times higher than that of the cold-atom optical filter realized by Faraday magneto-optic effect. This scheme can be extended to almost all kinds of atomic optical filters and may find applications in self-stabilizing laser and active optical clock.

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Section: Discussionmentioning

confidence: 99%

Cold-atom optical filtering enhanced by optical pumping

et al. 2022

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“…This ideal could help reduce the difficult integrals for the system energy. Recently, the theoretical and experimental progress in our understanding of quasi-one-dimensional cold-atom systems has served as a motivation to study these models [22][23][24][25][26]. The total Hamiltonian of the Moshinsky atom with two electrons is…”

Section: Three-body Problem and Many Interactions Of One-dimensional ...mentioning

confidence: 99%

A Mini-Review of the Kinetic Energy Partition Method in Quantum Mechanics

Chen,

Wu,

Chao

2024

Symmetry

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Based on the idea of adiabatic symmetry, we present a novel basis set expansion method—the kinetic energy partition (KEP) method—for solving quantum eigenvalue problems. Broken symmetry is responsible for quantum entanglement in many-body systems via parametric non-adiabatic corrections. Starting from simple one-particle-in-one-dimension problems, we gradually increase the complexity in the number of particles and the interaction patterns. Our goal in the mini-review is to advocate for the utility of the KEP method in front-line research, in particular for research beginners in quantum many-body problems.

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“…Diffuse laser cooling (DLC) is insensitive to the magnetic field and is therefore an ideal method to generate cold atoms in the microwave cavity [6][7][8]. The cold atom clocks based on DLC have been developed in Paris and Shanghai [9,10]; Paris' setup uses a spherical microwave cavity, while Shanghai's setup is cylindrical.…”

Section: Introductionmentioning

confidence: 99%

Satellite-borne atomic clock based on diffuse laser-cooled atoms

Meng

Jiang

et al. 2022

Front. Phys.

Self Cite

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The technique of laser cooling of atoms gives an opportunity to improve the performance of atomic clocks by using laser-cooled atoms. The most successful cold atom clock, called the atomic fountain, is now widely used as the primary frequency standard in many labs. The cold atom clock for satellite applications, however, has not been reported so far due to special requirements of space applications. Here, we report the development of an engineering model of a satellite-borne cold atom clock, which satisfied all requirements of in-orbit operation. The core of the clock’s principle is the laser cooling of atoms by diffuse laser lights inside the microwave cavity. The structure of the physics package is presented, and its main parameters are also given. The principle and design of the optical bench are described. The initial test results are presented, and the possible improvements are also discussed.

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Quasi-one-dimensional diffuse laser cooling of atoms

Cited by 12 publications

References 25 publications

Cold-atom optical filtering enhanced by optical pumping

Cold-atom optical filtering enhanced by optical pumping

A Mini-Review of the Kinetic Energy Partition Method in Quantum Mechanics

Satellite-borne atomic clock based on diffuse laser-cooled atoms

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