Optical-frequency-comb generation and entanglement with low-power optical input in a photonic molecule

Yu, Rong; Ding, Chunling; Wang, Wei; Wu, Ying

doi:10.1103/physreva.90.033830

Cited by 15 publications

(12 citation statements)

References 50 publications

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“…3(c) , the intricate competition between the two kinds of couplings, i.e., the cavity-cavity coupling and the optomechanical coupling, becomes obvious. Due to the linear cavity-cavity coupling indirectly influences the optomechanical coupling strength, the nonlinear effect of high-order sideband generation is decreased 48 49 . Last, for a large J , e.g., J = 2 π × 278 MHz in Fig.…”

Section: Resultsmentioning

confidence: 99%

Tunable high-order sideband spectra generation using a photonic molecule optomechanical system

Cao

Gao

et al. 2016

Sci Rep

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A tunable high-order sideband spectra generation scheme is presented by using a photonic molecule optomechanical system coupled to a waveguide beyond the perturbation regime. The system is coherently driven by a two-tone laser consisting of a continuous-wave control field and a pulsed driving field which propagates through the waveguide. The frequency spectral feature of the output field is analyzed via numerical simulations, and we confirm that under the condition of intense and nanosecond pulse driving, the output spectrum exhibits the properties of high-order sideband frequency spectra. In the experimentally available parameter range, the output spectrum can be efficiently tuned by the system parameters, including the power of the driving pulse and the coupling rate between the cavities. In addition, analysis of the carrier-envelop phase-dependent effect of high-order sideband generation indicates that the system may present dependence upon the phase of the pulse. This may provide a further insight of the properties of cavity optomechanics in the nonlinear and non-perturbative regime, and may have potential applications in optical frequency comb and communication based on the optomechanical platform. Cavity optomechanics1,2 describes the interaction between the electromagnetic radiation and nanomechanical or micromechanical motion, which has been developing rapidly. During the past decades, it leads to various important applications, such as gravitational-wave detection 3 , cooling of mechanical oscillators to the ground-state of motion 4-11 , optomechanically induced transparency (OMIT) and slow light [12][13][14][15][16][17][18] , precision measurements 19,20 , squeezing of light 21 , quantum information processing [22][23][24] , and so on. Most of the recent developments in cavity optomechanics are based on the perturbative interaction between the driving light fields and the optomechanical system. For example, in the context of OMIT, the optomechanical system is coherently driven by both a control field and a probe field. If the strength of the probe field is far less than that of the control field, the perturbation method can be used and the OMIT can be properly described by the linearization of the Heisenberg-Langevin equations. Aside from OMIT, the linearization of optomechanical interaction has also been adopted in many other studies, such as optomechanical dark state 25 and normal mode splitting 26 . One key aspect is that if the strength of the probe field becomes comparable with that of the control field, the perturbative description breaks down, and some novel nonlinear and non-perturbative effects come to appear 27,28 . Therefore, extending the studies of cavity optomechanics from the linear and perturbation regime to the nonlinear and non-perturbative regime is of great interest. On the other hand, as a natural extension of the generic optomechanical system, the composite optomechanical system which consists of two directly coupled whispering-gallery-mode microcavities (called a photonic molecul...

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Section: Resultsmentioning

confidence: 99%

Tunable high-order sideband spectra generation using a photonic molecule optomechanical system

Cao

Gao

et al. 2016

Sci Rep

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“…Beyond the weak excitation approximation [32][33][34][35]40,41,65], we need to take into account the nonlinear nature of the QD-cavity interaction, i.e., all the higher-order moments ig aâ †σ ge , −ig aâσeg , and 2ig aâσz in the above Heisenberg-Langevin equations. It has been shown that these nonlinear terms can give rise to some interesting nonlinear and nonperturbative effects of the coupled QD-cavity system, such as ultralow power and high-speed all-optical switching [40], optical sideband comb [44], and all-optical latching and modulation [67]. We now use this model to theoretically investigate the output power spectra of the coupled QD-cavity system probed under photoluminescence as is commonly done experimentally [68].…”

Section: System Description and Evolution Equationsmentioning

confidence: 98%

“…It has been demonstrated that optical nonlinearity of the coupled emitter-photonic crystal (PC) nanocavity system can be realized at very low optical power of a single input laser [39][40][41]. Some physical processes associated with optical nonlinearity, such as four-wave mixing response [42], optical chaos [43], optical sideband combs [44], and fast optical switching [45][46][47][48], have been mentioned. As a fundamental aspect of nonlinear optics, optical high-order sidebands (HOSs) generated via frequency modulation, which correspond in the frequency domain to a series of equally spaced monochromatic components, have also attracted widespread interest recently [49][50][51][52].…”

Section: Introductionmentioning

confidence: 99%

Trichromatic phase manipulation of optical high-order sidebands in a nanocavity coupled to a single quantum emitter

Wang

Ding

et al. 2015

J. Opt. Soc. Am. B

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We explore the dependence of optical high-order sideband (HOS) spectra on the incident power and relative phase of a trichromatic driving field in a single-mode nanocavity coupled to a two-level quantum emitter beyond the weak excitation approximation. With state-of-the-art experimental system parameters, it is found that the generated HOS can be enhanced significantly, compared with the bichromatic excitation. By varying the powers and phases of the trichromatic components, a few interesting phenomena such as enhancement, suppression, and quenching of the HOS spectral lines can be achieved. For the phase dependence, it is the sum of relative phases of two sideband components of the trichromatic driving field to the central component that plays a crucial role in generating the HOS. Optical HOS spectra exhibit remarkably different features once the sum phase is changed, but are kept unchanged regardless of the respective phases when the sum phase is fixed. The influence of the other system parameters, including the emitter-cavity coupling strength and all kinds of relative frequency detunings, on optical HOS generation is also discussed in detail. The underlying physical mechanism for optical HOS generation is presented. This investigation may find applications in multimode quantum memories and information processing at a low pump power level using cavity quantum electrodynamics.

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“…Some interesting works have been proposed about entanglement generated in optical combs. it is shown that optical-frequency combs are formed by the interaction between a cavity mode and a continuous-wave two-tone driving laser consisting of a pump field and a seed field via quantum dot-induced strong nonlinearity 21 . A large-scale quantum entanglement between two comb modes has very recently been explored in an interacting semiconductor quantum dot-photonic molecule system 22 .…”

Section: Introductionmentioning

confidence: 99%

Five-partite entanglement generation between two optical frequency combs in a quasi-periodic χ (2) nonlinear optical crystal

Sun

et al. 2017

Sci Rep

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We theoretically prove five-partite entanglement can be produced among modes of two simultaneously generated optical frequency combs via second-order nonlinear interaction in a designed periodically poled lithium niobat (PPLN) crystal. An extendible model is proposed to analyze the entanglement characteristics of generated comb modes by applying van Loock and Furusawa criteria. Our proposal provides a potential approach for generating multipartite entangled states, the so-called cluster states, which are the key resources for quantum computation. Moreover, simultaneously generation of two entangled combs can provide much higher efficiency to generate cluster states.

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Optical-frequency-comb generation and entanglement with low-power optical input in a photonic molecule

Cited by 15 publications

References 50 publications

Tunable high-order sideband spectra generation using a photonic molecule optomechanical system

Tunable high-order sideband spectra generation using a photonic molecule optomechanical system

Trichromatic phase manipulation of optical high-order sidebands in a nanocavity coupled to a single quantum emitter

Five-partite entanglement generation between two optical frequency combs in a quasi-periodic χ (2) nonlinear optical crystal

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