https://doi.org/10.1140/epjqt/s40507-025-00429-z
Research
Phonon blockade via atomic coherence in a hybrid optomechanical system
1
Department of Physics, College of Science, Yanbian University, 133002, YanJi, JiLin, China
2
Institute of Quantum Science and Technology, Yanbian University, 133002, YanJi, JiLin, China
3
Xiantao Ronghuai School, 433000, Xiantao, Hubei, China
a
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b
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Received:
18
April
2025
Accepted:
8
October
2025
Published online:
5
November
2025
A hybrid optomechanical system incorporating a two-level atom is utilized to realize phonon blockade, with the large-detuned optical mode decoupled from the system via adiabatic approximation. This process establishes an exchange interaction between the two-level atom and the mechanical mode. The findings indicate that both conventional and unconventional phonon blockade mechanisms coexist within the system. By tuning the driving frequency of the two-level atom, the system can be dynamically switched between these two mechanisms. The phonon blockade effect exhibits remarkable robustness against optical dissipation due to the adiabatic elimination of the cavity mode, enabling its realization even in low-Q cavities. In this study, the two-level atom serves not only as a critical component for achieving phonon blockade but also as an additional tool for manipulating the blockade mechanism. Our results provide a promising framework for hybrid optomechanical systems aiming to achieve switchable and robust single-phonon sources.
Key words: Phonon blockade / Atomic coherence / Cavity optomechanics
© The Author(s) 2025
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