Hyperparametric frequency noise eater

Matsko, Andrey B.

doi:10.1103/physreva.99.023843

Cited by 10 publications

(9 citation statements)

References 33 publications

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“…It has been recently pointed out that a pure parametric system is highly desirable for some applications. In particular, achieving squeezing on chip using a degenerate OPO has drawn a lot of interest recently[ 38 , 42 – 44 ], Moreover, it has been shown very recently that a network of coupled degenerate OPO could be implemented on chip to implement a coherent Ising machine [ 45 ], A different idea has also been proposed recently to use a degenerate OPO, as a "noise eater" 46 ], In ring resonator, there are strategies to control higher order interactions, for instance by inducing sidewall corrugation[ 47 ] or adding an auxiliary resonator [ 36 , 38 ] or implementing narrowband FWM by implementing a special dispersion profile[ 21 , 23 ]. Here, the devices operates naturally as a degenerate triply resonant OPO, although it could in principle be possible to achieve efficient cascaded interactions with some additional engineering[ 48 ] and tuning.…”

Section: Discussionmentioning

confidence: 99%

Photonic crystal optical parametric oscillator

et al. 2020

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We report a new class of Optical Parametric Oscillators, based on a 20 μm -long semiconductor Photonic Crystal Cavity and operating at Telecom wavelengths. Because the confinement results from Bragg scattering, the optical cavity contains a few modes, approximately equispaced in frequency. Parametric oscillation is reached when these high Q modes are thermally tuned into a triply resonant configuration, whereas any other parametric interaction is strongly suppressed. The lowest pump power threshold is estimated to 50 - 70 μW . This source behaves as an ideal degenerate Optical Parametric Oscillator addressing the needs in the field of quantum optical circuits, paving the way to the dense integration of highly efficient nonlinear sources of squeezed light or entangled photons pairs.

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Section: Discussionmentioning

confidence: 99%

Photonic crystal optical parametric oscillator

et al. 2020

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“…Nanomedicine is the application of nanotechnology to the prevention, diagnosis, and treatment of disease . Constant efforts are devoted to the synthesis of advanced multifunctional nanomaterials that fulfill the properties for each specific medical intervention …”

Section: Introductionmentioning

confidence: 99%

Hybrid Titanium Oxide/Polymer Amphiphilic Nanomaterials with Controlled Size for Drug Encapsulation and Delivery

Melnitzer

Sosnik

2018

Adv Funct Materials

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This work describes for the first time the synthesis of hybrid drug-loaded TiO 2 /polymer amphiphilic nanoparticles of finely controlled size utilizing a simple and reproducible sol-gel process that comprises the formation of a titanium(IV)/acetone oxo-organo complex followed by its blending with an amphiphilic poly(ethylene oxide)-b-poly(propylene oxide) block copolymer in acetone and its aqueous-phase nanoprecipitation. The size of the hybrid nanoparticles is governed by the complex aging, e.g., hybrid nanoparticles display diameter between 228 and 53 nm for aging of 1 and 36 days, respectively (dynamic light scattering). In addition, they show excellent physical stability in water owing to the coating of the surface with poly(ethylene oxide) blocks of the copolymer. Conversely, polymer-free TiO 2 particles are large and precipitate fast. Incorporation of a model hydrophobic drug, nitazoxanide, to the precursor solution results in hybrid nanoparticles containing 12.9% w/w cargo that is released following a bimodal profile. High-resolution transmission electron microscopy (Titan Cubed Themis G2 300) analysis reveals the porous amorphous nanostructure of these novel hybrids and colocalization of drug and copolymer in the nanoparticle bulk. Finally, upon ultrasonication, our hybrid nanoparticles produce reactive oxygen species in vitro which paves the way for their use in sonodynamic and drug release therapies.

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“…2 (d), the TRs conversion efficiency is below 10%. We note that the conversion efficiency is intentionally kept low so the TR oscillation is close to the three-mode hyperparametric oscillation studied in [32,34], although it can be raised above 20% without entering the chaotic regime [9] by increasing the pump power. Figure 2 (e) shows the spectra of f rf when the PLL is not activated and the signal of f mod = 10.3 GHz when the PLL is engaged, respectively.…”

Section: Variable Low-noise Microwave Synthesismentioning

confidence: 81%

“…In Fig. 1 (b) we plot the calculated quantum noises resulting from fundamental phase diffusion [32][33][34] and the simulated technical noises for the TR oscillation (of frequency f TR = 16ν FSR , where ν FSR = 12 GHz is the frequency of the microresonator FSR), the DKS oscillation and the synthesized microwave of the frequency of FSR, respectively. The resonator-related parameters used in the calculations and the simulations are similar to those of the crystalline microresonator in our experiments, and the technical noises include both the amplitude-modulation (AM) -to-phase-modulation (PM) noise caused by laser relative intensity noise (RIN) and the PM-to-PM noise induced by laser phase noise (see details of the simulation process and the discussion on the noise transfer mechanism in Appendix B).…”

Section: Principlementioning

confidence: 99%

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Coherent terahertz-to-microwave link using electro-optic-modulated Turing rolls

Weng,

Anderson,

Siddharth

et al. 2021

Preprint

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Arising from modulation instability, Turing rolls in optical Kerr microresonators have been used in the generation of optical frequency combs and the synthesis of microwave and terahertz frequencies. In this work, by applying electro-optic modulation on terahertz-frequency Turing rolls, we implement electro-optic frequency division with a microcomb to synthesize variable low-noise microwave signals.We also actively stabilize the terahertz oscillations to a microwave reference via intracavity power modulation, obtaining fractional frequency instabilities that are better than those of the free-running situation by up to six orders of magnitude. This study not only highlights the extraordinary spectral purity of Turing roll oscillations but also opens the way for bidirectional terahertz-to-microwave links with hybrid optical frequency comb techniques.

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Hyperparametric frequency noise eater

Cited by 10 publications

References 33 publications

Photonic crystal optical parametric oscillator

Photonic crystal optical parametric oscillator

Hybrid Titanium Oxide/Polymer Amphiphilic Nanomaterials with Controlled Size for Drug Encapsulation and Delivery

Coherent terahertz-to-microwave link using electro-optic-modulated Turing rolls

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