Generation of tripartite entanglement among optical modes in a single multimode nanobeam
Abstract
We theoretically demonstrate genuine steady-state tripartite entanglement in a monolithic optomechanical nanobeam integrating one transverse electric (TE) and two transverse magnetic (TM) optical modes coupled to a single mechanical mode. The system achieves strong coupling rates of g1/2π≈6.99×105 Hz for the TE mode, and g2,3/2π≈5.92×104 Hz and 4.91×104 Hz for the TM modes, with a mechanical quality factor Qm≈2.15×109, ensuring thermal stability up to 350 mK. Our analysis reveals that while bipartite entanglement persists across various regimes, genuine tripartite entanglement requires strong coupling, confirming the optimal operating point of our design. Telecom-band compatibility at 1549 nm is achieved through width-dependent tuning. Using finite element simulations and quantum Langevin analysis, we identify parameter regimes where the three optical modes exhibit verifiable tripartite entanglement (Rτmin>0), stable under cryogenic conditions with milliwatt-level pump powers.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (4)
Tijjani Abdulrazak
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China 1 , Chengdu 611731,
Qizhi Cai
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China 1 , Chengdu 611731,
Boyu Fan
School of Information and Communication Engineering, University of Electronic Science and Technology of China 4 , Chengdu 611731,
Guangwei Deng
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China 1 , Chengdu 611731,