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9篇 您的检索式:作者名="Mher"
    题名 作者 年代 出处 被引量
1Binding energy of impurity in a size-quantized coated semiconductor wire: role of the dielectric-constant mismatch显示文摘 Kirakosyan Albert A 2000Physica E2000,8,3:1
2Intermodal four-wave mixing in silicon waveguides显示文摘In this work, we report the modeling and the experimental demonstration of intermodal spontaneous as well as stimulated four-wave mixing(FWM) in silicon waveguides. In intermodal FWM, the phase-matching condition is achieved by exploiting the different dispersion profiles of the optical modes in a multimode waveguide. Since both the energy and the wave vectors have to be conserved in the FWM process, this leads to a wide tunability of the generated photon wavelength, allowing us to achieve a large spectral conversion. We measured several waveguides that differ by their widths and demonstrate large signal generation spanning from the pump wavelength(1550 nm) down to 1202 nm. A suited setup evidences that the different waves propagated indeed on different order modes, which supports the modeling. Despite observing a reduced efficiency with respect to intramodal FWM due to the decreased modal overlap, we were able to show a maximum spectral distance between the signal and idler of 979.6 nm with a 1550 nm pump. Our measurements suggest the intermodal FWM is a viable means for large wavelength conversion and heralded photon sources.STEFANO SIGNORINI MATTIA MANCINELLI MASSIMO BORGHI MARTINO BERNARD MHER GHULINYAN GEORG PUCKER LORENZO PAVESI 2018Photonics Research2018,6,8:1
3Complete crossing of Fano resonances in an optical microcavity via nonlinear tuning显示文摘We report on the modeling, simulation, and experimental demonstration of complete mode crossings of Fano resonances within chip-integrated microresonators. The continuous reshaping of resonant line shapes is achieved via nonlinear thermo-optical tuning when the cavity-coupled optical pump is partially absorbed by the material.The locally generated heat then produces a thermal field, which influences the spatially overlapping optical modes, allowing us to alter the relative spectral separation of resonances. Furthermore, we exploit such tunability to continuously probe the coupling between different families of quasi-degenerate modes that exhibit asymmetric Fano interactions. As a particular case, we demonstrate a complete disappearance of one of the modal features in the transmission spectrum as predicted by Fano [Phys. Rev. 124, 1866(1961)]. The phenomenon is modeled as a third-order nonlinearity with a spatial distribution that depends on the stored optical field and thermal diffusion within the resonator. The performed nonlinear numerical simulations are in excellent agreement with the experimental results, which confirm the validity of the developed theory.MARTINO BERNARD FERNANDO RAMIRO MANZANO LORENZO PAVESI GEORG PUCKER IACOPO CARUSOTTO MHER GHULINYAN 2017Photonics Research2017,5,3:1
4Characterization and Design of Interphases in Glass Fiber Reinforced Polypropylene 显示文摘MhER E Pisanova E 2000Polymer Composites2000,21,9:1
5Pain and Interoception Imaging Network (PAIN): A multimodal, multisite, brain-imaging repository for chronic somatic and visceral pain disorders显示文摘Jennifer S. Labus Bruce Naliboff Lisa Kilpatrick Cathy Liu Cody Ashe-McNalley Ivani R. dos Santos Mher Alaverdyan Davis Woodworth Arpana Gupta Benjamin M. Ellingson Kirsten Tillisch Emeran A. Mayer 2016NeuroImage2016,,:1
6On Leland’s strategy of option pricing with transactions costs显示文摘Yuri M. Kabanov Mher M. Safarian 1997Finance and Stochastics1997,,3:1
7Plant oil renewable resources as green alter- natives in polyraer science显示文摘MICHAEl A R MHER JURGEN O METZGER ULRICH S SCHUBERT 2007Chem Soc Rev2007,36,11:1
8本地化和激光随机和伪随机光子结构显示文摘在过去的20年,科学家们对随机和准随机光子系统的性能进行了广泛的研究,最近的技术发展为该领域提供了更先进的检测器件和设备。新的光学表征技术能更好的探究随机和准随机光子系统,增加了人们对随机和准随机光子学的理解,也为人们探索随机和准随机光子学打开了新的视野。Mher Ghulinyan 杨盈莹 2015国外科技新书评介2015,0,11:0
9Generation of quantum-certified random numbers using on-chip path-entangled single photons from an LED显示文摘Single-photon entanglement is a peculiar type of entanglement in which two or more degrees of freedom of a single photon are correlated quantum-mechanically. Here, we demonstrate a photonic integrated chip able to generate and manipulate single-photon path-entangled states, using a commercial red LED as light source.A Bell test, in the Clauser, Horne, Shimony, and Holt(CHSH) form, is performed to confirm the presence of entanglement, resulting in a maximum value of the CHSH correlation parameter equal to 2.605 ± 0.004.This allows us to use it as an integrated semi-device independent quantum random number generator able to produce certified random numbers. The certification scheme is based on a Bell’s inequality violation and on a partial characterization of the experimental setup, without the need of introducing any further assumptions either on the input state or on the particular form of the measurement observables. In the end a min-entropy of 33% is demonstrated.NICOLÒ LEONE STEFANO AZZINI SONIA MAZZUCCHI VALTER MORETTI MATTEO SANNA MASSIMO BORGHI GIOELE PICCOLI MARTINO BERNARD MHER GHULINYAN LORENZO PAVESI 2023Photonics Research2023,11,9:0
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