Manipulation of High-Fidelity Sidebands under Large Detuning by Floquet Technology:Application to Multi-Mode Cooling  

作　　者：Xue-Ying Yang Zi-Dong Lin Shu-Ying Mu Wei Wu Chun-Wang Wu Yi Xie Ping-Xing Chen 杨雪滢;林子栋;穆姝颖;吴伟;吴春旺;谢艺;陈平形(Institute for Quantum Science and Technology,College of Sciences,National University of Defense Technology,Changsha 410073,China;Shenzhen Institute for Quantum Science and Engineering and Department of Physics,Southern University of Science and Technology,Shenzhen 518055,China)

机构地区：[1]Institute for Quantum Science and Technology,College of Sciences,National University of Defense Technology,Changsha 410073,China [2]Shenzhen Institute for Quantum Science and Engineering and Department of Physics,Southern University of Science and Technology,Shenzhen 518055,China

出　　处：《Chinese Physics Letters》2024年第11期53-61,共9页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11904402,12174447,12074433,12004430,and 12174448)。

摘　　要：The Floquet technology,a powerful way to manipulate quantum states,is employed to drive sidebands transition under large detuning.Our results demonstrate that high fidelities over 99%can be achieved through optimizing suitable modulation frequencies under large detuning.We observe high-fidelity transitions within a high bandwidth by utilizing a single modulation frequency and reveal that this capability is due to the emergence of a flat-band structure in the bandwidth range.The key finding of high-fidelity sideband manipulation under large detuning is experimentally confirmed in nuclear magnetic resonance platform.Finally,we propose a new parallel sideband cooling scheme that enables simultaneous cooling of multiple motional modes.This approach improves the cooling rate compared to conventional schemes with fixed laser frequency and power,and eliminates the need for mode-specific addressing.Our Floquet parallel scheme is applicable to any harmonic oscillator system and is not limited by bandwidth in theory.

关 键 词：tuning BANDS scheme 

分 类 号：O413[理学—理论物理]