Optomechanical transistor with mechanical gain

Abstract

We study an optomechanical transistor, where an input field can be transferred and amplified unidirectionally in a cyclic three-mode optomechanical system. In this system, the mechanical resonator is coupled simultaneously to two cavity modes. We show that it only requires a finite mechanical gain to achieve the nonreciprocal amplification. Here the nonreciprocity is caused by the phase difference between the linearized optomechanical couplings that breaks the time-reversal symmetry of this system. The amplification arises from the mechanical gain, which provides an effective phonon bath that pumps the mechanical mode coherently. This effect is analogous to the stimulated emission of atoms, where the probe field can be amplified when its frequency is in resonance with that of the anti-Stokes transition. We show that by choosing optimal parameters, this optomechanical transistor can reach perfect unidirectionality accompanied with strong amplification. In addition, the presence of the mechanical gain can result in ultra-long delay in the phase of the probe field, which provides an alternative to controlling light transport in optomechanical systems.

8 pages, 5 figures

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Cited by in corpus (12)

• Nonreciprocal Phonon Laser
• Nonreciprocity via nonlinearity and synthetic magnetism
• Directional amplifier in an optomechanical system with optical gain
• Optomechanical dynamics in the $\mathcal{P}\mathcal{T}$- and broken-$\mathcal{P}\mathcal{T}$-symmetric regimes
• Single photon transmission in strong three-mode optomechanical circulatory system
• Optimal unidirectional amplification induced by optical gain in optomechanical systems
• Nonreciprocal quantum interference and coherent photon routing in a three-port optomechanical system
• Exceptional point induced lasing dynamics in a non-Hermitian system
• Switchable bipartite and genuine tripartite entanglement via an optoelectromechanical interface
• Dynamical signature of moire pattern in non-Hermitian ladder
• Parity-dependent unidirectional and chiral photon transfer in reversed-dissipation cavity optomechanics
• Purely Quantum Nonreciprocity by Spatially Separated Transmission Scheme