The Experts below are selected from a list of 270 Experts worldwide ranked by ideXlab platform
Christine Silberhorn - One of the best experts on this subject based on the ideXlab platform.
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high performance source of spectrally pure polarization entangled photon pairs based on hybrid integrated bulk optics
Optics Express, 2018Co-Authors: Evan Meyerscott, Nidhin Prasannan, Christof Eigner, Viktor Quiring, John M Donohue, Sonja Barkhofen, Christine SilberhornAbstract:Entangled photon pair sources based on bulk optics are approaching optimal design and implementation, with high state fidelities, spectral purities and heralding efficiencies, but generally low brightness. Integrated entanglement sources, while providing higher brightness and low-power operation, often sacrifice performance in output state quality and coupling efficiency. Here we present a polarization-entangled pair source based on a hybrid approach of waveguiding and bulk optics, addressing every metric simultaneously. We show 96 % fidelity to the singlet state, 82 % Hong-Ou-Mandel interference visibility, 43 % average Klyshko efficiency, and a high brightness of 2.9 × 106 pairs/(mode·s·mW), while requiring only Microwatts of pump power.
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high performance source of spectrally pure polarization entangled photon pairs based on hybrid integrated bulk optics
arXiv: Quantum Physics, 2018Co-Authors: Evan Meyerscott, Nidhin Prasannan, Christof Eigner, Viktor Quiring, John M Donohue, Sonja Barkhofen, Christine SilberhornAbstract:Entangled photon pair sources based on bulk optics are approaching optimal design and implementation, with high state fidelities, spectral purities and heralding efficiencies, but generally low brightness. Integrated entanglement sources, while providing higher brightness and low-power operation, often sacrifice performance in output state quality and coupling efficiency. Here we present a polarization-entangled pair source based on a hybrid approach of waveguiding and bulk optics, addressing every metric simultaneously. We show 96% fidelity to the singlet state, 82% Hong-Ou-Mandel interference visibility, 43% average Klyshko efficiency, and a high brightness of $2.9\times10^6$ pairs/(mode$\cdot$s$\cdot$mW), while requiring only Microwatts of pump power.
Claude Fabre - One of the best experts on this subject based on the ideXlab platform.
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Ultra-low threshold CW Triply Resonant OPO in the near infrared using Periodically Poled Lithium Niobate
Journal of Optics A: Pure and Applied Optics, 2001Co-Authors: Marcello Martinelli, K.s. Zhang, Thomas Coudreau, Agnès Maître, Claude FabreAbstract:We have operated a CW triply resonant OPO using a PPLN crystal pumped by a Nd:YAG laser at 1.06 micron and generating signal and idler modes in the 2-2.3 micron range. The OPO was operated stably in single mode operation over large periods of time with a pump threshold as low as 500 Microwatts.
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Generation of bright squeezed light at 1.06 $\mu m$ using cascaded non-linearities in a triply resonant c.w. PPLN OPO
Physical Review A, 2001Co-Authors: K.s. Zhang, Marcello Martinelli, Thomas Coudreau, Agnès Maître, Claude FabreAbstract:We have used an ultra-low threshold continuous-wave Optical Parametric Oscillator (OPO) to reduce the quantum fluctuations of the reflected pump beam below the shot noise limit. The OPO consisted of a triply resonant cavity containing a Periodically-Poled Lithium Niobate crystal pumped by a Nd:YAG laser and giving signal and idler wavelengths close to 2.12 microns and a threshold as low as 300 Microwatts. We detected the quantum fluctuations of the pump beam reflected by the OPO using a slightly modified homodyne detection technique. The measured noise reduction was 30 % (inferred noise reduction at the output of the OPO 38 %).
Evan Meyerscott - One of the best experts on this subject based on the ideXlab platform.
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high performance source of spectrally pure polarization entangled photon pairs based on hybrid integrated bulk optics
Optics Express, 2018Co-Authors: Evan Meyerscott, Nidhin Prasannan, Christof Eigner, Viktor Quiring, John M Donohue, Sonja Barkhofen, Christine SilberhornAbstract:Entangled photon pair sources based on bulk optics are approaching optimal design and implementation, with high state fidelities, spectral purities and heralding efficiencies, but generally low brightness. Integrated entanglement sources, while providing higher brightness and low-power operation, often sacrifice performance in output state quality and coupling efficiency. Here we present a polarization-entangled pair source based on a hybrid approach of waveguiding and bulk optics, addressing every metric simultaneously. We show 96 % fidelity to the singlet state, 82 % Hong-Ou-Mandel interference visibility, 43 % average Klyshko efficiency, and a high brightness of 2.9 × 106 pairs/(mode·s·mW), while requiring only Microwatts of pump power.
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high performance source of spectrally pure polarization entangled photon pairs based on hybrid integrated bulk optics
arXiv: Quantum Physics, 2018Co-Authors: Evan Meyerscott, Nidhin Prasannan, Christof Eigner, Viktor Quiring, John M Donohue, Sonja Barkhofen, Christine SilberhornAbstract:Entangled photon pair sources based on bulk optics are approaching optimal design and implementation, with high state fidelities, spectral purities and heralding efficiencies, but generally low brightness. Integrated entanglement sources, while providing higher brightness and low-power operation, often sacrifice performance in output state quality and coupling efficiency. Here we present a polarization-entangled pair source based on a hybrid approach of waveguiding and bulk optics, addressing every metric simultaneously. We show 96% fidelity to the singlet state, 82% Hong-Ou-Mandel interference visibility, 43% average Klyshko efficiency, and a high brightness of $2.9\times10^6$ pairs/(mode$\cdot$s$\cdot$mW), while requiring only Microwatts of pump power.
Frank Vollmer - One of the best experts on this subject based on the ideXlab platform.
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whispering gallery mode carousel a photonic mechanism for enhanced nanoparticle detection in biosensing
Optics Express, 2009Co-Authors: Stephen Arnold, D Keng, S I Shopova, Stephen Holler, W Zurawsky, Frank VollmerAbstract:Individual nanoparticles in aqueous solution are observed to be attracted to and orbit within the evanescent sensing ring of a Whispering Gallery Mode micro-sensor with only Microwatts of driving power. This Carousel trap, caused by attractive optical gradient forces, interfacial interactions, and the circulating momentum flux, considerably enhances the rate of transport to the sensing region, thereby overcoming limitations posed by diffusion on such small area detectors. Resonance frequency fluctuations, caused by the radial Brownian motion of the nanoparticle, reveal the radial trapping potential and the nanoparticle size. Since the attractive forces draw particles to the highest evanescent intensity at the surface, binding steps are found to be uniform.
Vladimir S. Ilchenko - One of the best experts on this subject based on the ideXlab platform.
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Sub-microwatt photonic microwave receiver
IEEE Photonics Technology Letters, 2002Co-Authors: Vladimir S. Ilchenko, Anatoliy A. Savchenkov, Andrey B. Matsko, Lutfollah MalekiAbstract:We report efficient photonic reception of nanowatt microwave signals by their direct upconversion into optical domain using high-Q whispering gallery modes in a millimeter size toroidal cavity fabricated from LiNbO/sub 3/.
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Optical whispering-gallery microresonators
Laser Applications, 1994Co-Authors: Vladimir B. Braginsky, M. L. Gorodetsky, Vladimir S. IlchenkoAbstract:Quality factor 2.5 X 10 9 at the wavelength (lambda) equals 0.63 micrometers is reported in approximately 100 micrometers spherical resonators of fused silica with whispering-gallery modes (equivalent finesse F equals 2.5 X 10 6 ). Quality-factor 3 X 10 7 and effective thermal tunability of modes (up to 0.1%) is demonstrated in whispering-gallery microresonators of optical glass. Dispersive bistability and other nonlinear effects are observed at the level of input power about tens of Microwatts. Nonlinear properties of optical whispering-gallery modes are investigated by mode cross-modulation technique. Prospects of applications in linear signal processing and quantum-nondemolition measurements are outlined.