Nonreciprocal slow or fast light in anti-$\mathcal{P}\mathcal{T}$-symmetric optomechanics

Abstract

Non-Hermitian systems with anti-parity-time ($\mathcal{A}\mathcal{P}\mathcal{T}$) symmetry have revealed rich physics beyond conventional systems. Here, we study optomechanics in an $\mathcal{A}\mathcal{P}\mathcal{T}$-symmetric spinning resonator and show that, by tuning the rotating speed to approach the exceptional point (EP) or the non-Hermitian spectral degeneracy, nonreciprocal light transmission with a high isolation ratio can be realized. Accompanying this process, nonreciprocal group delay or advance is also identified in the vicinity of EP. Our work sheds new light on manipulating laser propagation with optomechanical EP devices and, in a broader view, can be extended to explore a wide range of $\mathcal{A}\mathcal{P}\mathcal{T}$-symmetric effects, such as $\mathcal{A}\mathcal{P}\mathcal{T}$-symmetric phonon lasers, $\mathcal{A}\mathcal{P}\mathcal{T}$-symmetric topological effects, and $\mathcal{A}\mathcal{P}\mathcal{T}$-symmetric force sensing or accelerator.

9 pages, 4 figures. It has been accepted for publication as a Regular Article in Physical Review A

References in corpus (15)

• Optomechanically induced transparency
• Electromagnetically Induced Transparency and Slow Light with Optomechanics
• Loss-induced suppression and revival of lasing
• Circuit cavity electromechanics in the strong coupling regime
• PT-Symmetric Phonon Laser
• $\mathcal{P}\mathcal{T}$-Symmetry-Breaking Chaos in Optomechanics
• Optomechanically-Induced Transparency in partiy-time-symmetric microresonators
• Nonreciprocal unconventional photon blockade in a spinning optomechanical system
• Unconventional Singularity in Anti-Parity-Time Symmetric Cavity Magnonics
• Cavity optomechanical coupling assisted by an atomic gas
• Control of microwave signals using circuit nano-electromechanics
• Dynamical Control of Quantum Heat Engines Using Exceptional Points
• Optomechanical second-order sidebands and group delays in a Kerr resonator
• Selective optomechanically-induced amplification with driven oscillators
• Phase-controlled pathway interferences and switchable fast-slow light in a cavity-magnon polariton system

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