Search results for "Photonic device"

showing 3 items of 3 documents

Generation and Coherent Control of Pulsed Quantum Frequency Combs

2018

We present a method for the generation and coherent manipulation of pulsed quantum frequency combs. Until now, methods of preparing high-dimensional states on-chip in a practical way have remained elusive due to the increasing complexity of the quantum circuitry needed to prepare and process such states. Here, we outline how high-dimensional, frequency-bin entangled, two-photon states can be generated at a stable, high generation rate by using a nested-cavity, actively mode-locked excitation of a nonlinear micro-cavity. This technique is used to produce pulsed quantum frequency combs. Moreover, we present how the quantum states can be coherently manipulated using standard telecommunications…

0301 basic medicineDensity matrixOptics and PhotonicsPhotonGeneral Chemical EngineeringSettore ING-INF/01 - ElettronicaGeneral Biochemistry Genetics and Molecular Biology03 medical and health sciencesEngineering0302 clinical medicineQuantum stateQuantum DotsQuantumQCQuantum opticsPhysicsGeneral Immunology and Microbiologybusiness.industryGeneral NeuroscienceNonlinear opticsSettore ING-INF/02 - Campi Elettromagnetici030104 developmental biologyCoherent controlQuantum optics Integrated photonic devices Mode-locked lasers Nonlinear optics Four-wave mixing Frequency combs High- dimensional statesFrequency domainOptoelectronicsbusiness030217 neurology & neurosurgeryJournal of Visualized Experiments
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Polymer/Perovskite Amplifying Waveguides for Active Hybrid Silicon Photonics

2015

The emission properties of hybrid halide perovskites are exploited to implement a stable and very low power operation waveguide optical amplifier integrated in a silicon platform. By optimizing its design with a poly(methyl methacrylate) (PMMA) encapsulation, this novel photonic device presents a net gain of around 10 dB cm−1 and 3–4 nm linewidth with an energy threshold as low as 2 nJ pulse−1 and exhibiting no degradation after one year. This work was supported by Generalitat Valenciana (Project No. ISIC/2012/008), the Universitat Jaume I (Project No. 12I361.01/1), Spanish MINECO (Projects Nos. MAT2013-47192-C3-1-R and TEC2014-53727-C2-1-R) and EU-NAVOLCHI (Project No. 288869).

Optical amplifierHybrid halide perovskitesMaterials scienceSilicon photonicsSiliconbusiness.industryOperation waveguide optical amplifierMechanical Engineeringchemistry.chemical_elementNanotechnologyPoly(methyl methacrylate) (PMMA) encapsulationPhotonic devicelaw.inventionLaser linewidthchemistryMechanics of MaterialslawNet gainOptoelectronicsGeneral Materials SciencePhotonicsbusinessWaveguidePerovskite (structure)
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Unidirectional reflection from an integrated "taiji" microresonator

2020

We study light transmission and reflection from an integrated microresonator device, formed by a circular microresonator coupled to a bus waveguide, with an embedded S-shaped additional crossover waveguide element that selectively couples counter-propagating modes in a propagation-direction-dependent way. The overall shape of the device resembles a "taiji"symbol, hence its name. While Lorentz reciprocity is preserved in transmission, the peculiar geometry allows us to exploit the non-Hermitian nature of the system to obtain high-contrast unidirectional reflection with negligible reflection for light incident in one direction and a significant reflection in the opposite direction.

PhysicsReciprocity; photonic device; microcavityLight transmissionbusiness.industryLorentz transformationCrossoverPhysics::Optics02 engineering and technologyÒptica021001 nanoscience & nanotechnology01 natural sciencesAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materials010309 opticssymbols.namesakeOpticsReciprocity (electromagnetism)0103 physical sciencessymbols0210 nano-technologybusiness
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