Tunable optomechanically induced transparency by controlling the dark-mode effect

Lai, Deng-Gao; Wang, Xin; Qin, Wei; Hou, Bo‐Yu; Nori, Franco; Liao, Jie‐Qiao

doi:10.1103/physreva.102.023707

Cited by 80 publications

(32 citation statements)

References 75 publications

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“…Furthermore, if the mechanical resonators are coupled directly through Coulomb interaction [65][66][67], a piezoelectric transducer [68], or a superconducting charge qubit [69], the multimode optomechanical system with loop interaction can exhibit exciting features such as nonreciprocal ground-state cooling [59] and an enhanced second-order sideband [69]. Mechanical PT symmetry has also been demonstrated in two coupled optomechanical systems with the cavities being driven by blue-and red-detuned laser fields, respectively [70].…”

Section: Introductionmentioning

confidence: 99%

Energy-level attraction and heating-resistant cooling of mechanical resonators with exceptional points

2021

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We study the energy-level evolution and ground-state cooling of mechanical resonators under a synthetic phononic gauge field. The tunable gauge phase is mediated by the phase difference between the PT -and anti-PT -symmetric mechanical couplings in a multimode optomechanical system. The transmission spectrum then exhibits an asymmetric Fano line shape or a double optomechanically induced transparency by modulating the gauge phase. Moreover, the eigenvalues will collapse and become degenerate, although the mechanical coupling is continuously increased. Such counterintuitive energy-level attraction, instead of anticrossing, is attributed to destructive interferences between PT -and anti-PT -symmetric couplings. We find that the energy-level attraction, as well as the accompanying exceptional points (EPs), can be clearly observed in the cavity output power spectrum where the mechanical eigenvalues correspond to distinct peaks. For mechanical cooling, the average phonon occupation number is minimized at the EPs. Especially, phonon transport becomes nonreciprocal and even ideally unidirectional at the EPs. Finally, we propose a heating-resistant ground-state cooling based on the nonreciprocal phonon transport, which is mediated by the gauge field. Towards the quantum regime of macroscopic mechanical resonators, most optomechanical systems are ultimately limited by their intrinsic cavity or mechanical heating. Our work shows that the thermal energy transfer can be blocked by tuning the gauge phase, which suggests a promising route to bypass the heating limitations.

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Section: Introductionmentioning

confidence: 99%

Energy-level attraction and heating-resistant cooling of mechanical resonators with exceptional points

2021

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“…We now discuss the influence of the counterrotating term on the group delay of the probe output field. According to Equation ( 7), the transmission rate corresponding to the probe output field can be expressed as [75]…”

Section: Fast-slow Light Effectmentioning

confidence: 99%

“…We first study the transmission rate of the probe output field for η = 1/2 [75]. Figure 7a shows the transmission rate T of the output field as a function of the normalized frequency δ ω /ω 1 when the Coulomb coupling strength is chosen as λ = 0.01λ 0 .…”

Section: Application Of the Counterrotating Term To The System With Mechanical Gainmentioning

confidence: 99%

Optical Amplification and Fast-Slow Light in a Three-Mode Cavity Optomechanical System without Rotating Wave Approximation

Zhao

Wang

et al. 2021

Photonics

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We investigate the optical amplification of the output field and fast-slow light effect in a three-mode cavity optomechanical system without rotating wave approximation and discuss two ways of realizing the optical amplification effect. Resorting to the Coulomb coupling between the nanomechanical resonators, the asymmetric double optomechanically induced amplification effect can be achieved by utilizing the counterrotating term. Moreover, we find a remarkable optical amplification effect and observe the prominent fast-slow light effect at the singular point since the introduction of mechanical gain. Meanwhile, the transmission rate of the output field is increased by four orders of magnitude and the group delay time can reach in the order of 105μs. Our work is of great significance for the potential applications of optomechanically induced amplification in quantum information processing and quantum precision measurement.

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“…However, whether in quantum or in classical systems, the Fano resonance, EIT-or EIABS-like spectra are normally experimentally realized separately. The switchable electromagnetically induced transparency and absorption, as well as fast and slow light, have been proposed using dressed superconducting qubits [8], hybrid optomechanical system [24,25], dark-mode breaking [26][27][28], and so on. Particularly, there appears growing interest to control the EIT and EIABS by introducing exceptional points [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Phase-Controlled Pathway Interferences and Switchable Fast-Slow Light in a Cavity-Magnon Polariton System

Jie

et al. 2021

Phys. Rev. Applied

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We study the phase-controlled transmission properties in a compound system consisting of a threedimensional copper cavity and an yttrium-iron-garnet (YIG) sphere. By tuning the relative phase of the magnon pumping and cavity-probe tones, constructive and destructive interferences occur periodically, which strongly modify both the cavity-field transmission spectra and the group delay of light. Moreover, the tunable amplitude ratio between pump-probe tones allows us to further improve the signal absorption or amplification, accompanied by either significantly enhanced optical advance or delay. Both the phase and amplitude ratio can be used to realize in situ tunable and switchable fast-slow light. The tunable phase and amplitude ratio lead to the zero reflection of the transmitted light and an abrupt fast-slow light transition. Our results confirm that direct magnon pumping through the coupling loops provides a versatile route to achieve controllable signal transmission, storage, and communication, which can be further expanded to the quantum regime, realizing coherent-state processing or quantum-limited precise measurements.

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Tunable optomechanically induced transparency by controlling the dark-mode effect

Cited by 80 publications

References 75 publications

Energy-level attraction and heating-resistant cooling of mechanical resonators with exceptional points

Energy-level attraction and heating-resistant cooling of mechanical resonators with exceptional points

Optical Amplification and Fast-Slow Light in a Three-Mode Cavity Optomechanical System without Rotating Wave Approximation

Phase-Controlled Pathway Interferences and Switchable Fast-Slow Light in a Cavity-Magnon Polariton System

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