| ATOMIC AND MOLECULAR PHYSICS |
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Manipulation of High-Fidelity Sidebands under Large Detuning by Floquet Technology: Application to Multi-Mode Cooling |
| Xue-Ying Yang1, Zi-Dong Lin2, Shu-Ying Mu1, Wei Wu1, Chun-Wang Wu1, Yi Xie1, and Ping-Xing Chen1* |
1Institute for Quantum Science and Technology, College of Sciences, National University of Defense Technology, Changsha 410073, China
2Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
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| Cite this article: |
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Xue-Ying Yang, Zi-Dong Lin, Shu-Ying Mu et al 2024 Chin. Phys. Lett. 41 113702 |
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Abstract 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.
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Received: 19 September 2024
Published: 11 November 2024
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