منتج
أكثر من 30 نوعًا من المنتجات تغطي التعدين وسحق البناء والطحن الصناعي ومواد البناء الخضراء وغيرها من المجالات
hot rubidium beam
Experimental Generation of Multiple Quantum Correlated Beams
2014年7月10日 Here, we report on such a source that provides a method for generating quantum correlated beams that can be extended to a large number of modes by using
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Modulation of the optical beam with orbital angular
2020年1月17日 In this work, we report the influence of the spatial structure of the control beam on the self-focusing and defocusing process of the
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Multi-spatial-mode single-beam quadrature squeezed states
Multi-spatial-mode single-beam quadrature squeezed states of light from four-wave mixing in hot rubidium vapor Neil Corzo,1,2,∗ Alberto M. Marino,1 Kevin M. Jones,3 and Paul D.
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Phase Modulation in Rydberg Dressed Multi-Wave Mixing
To excite hot rubidium atoms from level 1〉 to Rydberg states 2〉, we obtain the needed 480 nm laser E 2 (ω 2, k 2) by the way of frequency doubling LD2 at ≈960 nm. The strong
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Multi-spatial-mode single-beam quadrature squeezed states of
Multi-spatial-mode single-beam quadrature squeezed states of light from ...
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(PDF) Quantum optical devices based on four-wave mixing in hot
2015年6月1日 PDF In this paper, we briefly review the recent experimental progresses in quantum optics based on four-wave mixing (FWM) processes in hot rubidium... Find,
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Experimental generation of quadruple quantum-correlated beams
2017年2月2日 Experimental generation of quadruple quantum-correlated beams from hot rubidium vapor by cascaded four-wave mixing using spatial multiplexing Leiming Cao,
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Quantum optical devices based on four-wave mixing in hot
2015年2月7日 In this paper, we briefly review the recent experimental progresses in quantum optics based on four-wave mixing (FWM) processes in hot rubidium vapor,
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Bright narrowband biphoton generation from a hot rubidium
2017年4月17日 We demonstrate the generation of high-quality narrowband biphotons from a Doppler-broadened hot rubidium atomic vapor cell. Choosing a double-Λ atomic
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SCIENCE CHINA Physics, Mechanics Astronomy
cesses in hot rubidium vapor, particularly our two recent experiments in quantum information. We have experimentally pro- duced strong quantum correlations between
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High-speed stimulated Brillouin scattering spectroscopy at 780 nm
2016年7月12日 Transmission-mode SBS spectroscopy in nearly backscattering geometry based on single-modulation (SM) versus double-modulation (DM) lock-in detection (LID). (a) In SM-LID, the pump beam at λ 1 (ω 1) is intensity modulated at f m1 and an ultra-narrowband hot rubidium-85 notch filter (OF) at λ c is used prior to lock-in
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Bright narrowband biphoton generation from a hot rubidium
ous experiment, the cross-sectional beam profile was Gaussian shape,8 which was located aside from the SFWM volume. To increase the interaction area of optical pumping, we use a hollow-shaped beam in this work, as shown in the inset of Fig. 1. Compared to the previously used Gaussian beam, the hollow beam depopulates the upper ground state
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arXiv:1703.03438v1 [quant-ph] 9 Mar 2017
twin beams generated via 4WM in hot rubidium va-por [14]. Similar results have been obtained using ce-sium atoms [15]. These two systems share the property ∗ rglasser@tulane that the ground state hyperfine splitting is resolved at operating temperatures. More recently, 4WM in potas-sium vapor was investigated on account of its
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Generation of Airy beams by four-wave mixing in Rubidium vapor
2014年8月1日 This is achieved by using a non-degenerate FWM process, which occurs with two Gaussian pump beams and one Airy signal beam in hot Rubidium vapor. After satisfying the phase matching condition, a FWM field with the profile of an Airy beam can be generated. In our experiment, the diffraction-free and self-healing behaviors of the
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Multi-spatial-mode single-beam quadrature squeezed states
Multi-spatial-mode single-beam quadrature squeezed states of light from four-wave mixing in hot rubidium vapor Neil Corzo,1,2,∗ Alberto M. Marino,1 Kevin M. Jones,3 and Paul D. Lett1 1Joint Quantum Institute, National Institute of Standards and Technology and the University of Maryland, Gaithersburg, Maryland 20899 USA
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Rb vapor - arXiv
light via up-conversion of near-infrared lasers in a hot rubidium vapor cell. By optimizing pump polarizations and frequencies we achieve a single-pass conversion efficiency of 260% per Watt, signific antly higher ... 776nm beam by monitoring the two-photon absorption of a weak776nm probe beam counter-propagating through the hot cell (Fig. 2a
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High flux source of cold rubidium atoms - Harvard University
a rubidium candlestick atomic beam source and transversely cooled and collimated by a 20 cm long atomic collimator section, boosting overall beam flux by a factor of 50. ... low-temperature shield surrounding a localized hot emission point. The 2 mm emission hole lies 2 cm behind a 2 mm collimation hole, resulting in an emitted beam with a ...
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Multi-spatial-mode single-beam quadrature squeezed states of
Multi-spatial-mode single-beam quadrature squeezed states of light from ...
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Phase Modulation in Rydberg Dressed Multi-Wave Mixing
property of hot rubidium atoms is modulated by the Rydberg-Rydberg interaction, which can result ... Doppler width greatly, which makes atoms in the beam volume behave like cold atoms with reduced
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An optically pumped atomic clock based on a continuous slow cesium beam
2022年11月30日 Herein, we report the scheme of an optically pumped atomic clock based on a cold cesium atomic beam source. We propose the laser system and physical mechanism of this atomic clock, wherein the atomic beam travels in an upper parabolic trajectory, thereby eliminating the light shift effect. In the experiments, when the length of
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Experimental generation of quadruple quantum-correlated beams from hot ...
2017年2月2日 Figure 3. Noise power of different beams and their substraction in some given forms. (a) Theoretical dependence of noise powers on the gain. (b) Corresponding experimental results when G = 2.9. (c) and (d) Trace SQZ and trace SNL stand for the normalized intensity-difference noise power of the twin beams generated from Cell 1 and
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Collimated versatile atomic beam source with alkali dispensers
2022年4月4日 A probe beam locked to the 87 Rb D 2 F = 2 to F ′ = 3 transition is located downstream from the pump. The fluorescence from the probe beam is collected by a micro-photomultiplier tube (Hamamatsu H12403-20). The laser beam separation L = 20 mm, while the diameters of both beams are d 1 = d 2 = 1.2 mm. The dispenser current was
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A chip-scale atomic beam clock Nature Communications
2023年6月13日 A prototype chip-scale clock is realized using Ramsey CPT spectroscopy of the atomic beam over a 10 mm distance and demonstrates a fractional frequency stability of ≈1.2 × 10 −9 / \ (\sqrt ...
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2017年3月3日 Here only pump beam E 1 and probe beam E p interact inside the rubidium vapor, ... Qin, Z. Z. et al. Experimental generation of multiple quantum correlated beams from hot rubidium vapor. Phys. Rev.
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Experimental generation of quadruple quantum-correlated beams from hot ...
2017年2月2日 Figure 3. Noise power of different beams and their substraction in some given forms. (a) Theoretical dependence of noise powers on the gain. (b) Corresponding experimental results when G = 2.9. (c) and (d) Trace SQZ and trace SNL stand for the normalized intensity-difference noise power of the twin beams generated from Cell 1 and
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Collimated versatile atomic beam source with alkali dispensers
2022年4月4日 A probe beam locked to the 87 Rb D 2 F = 2 to F ′ = 3 transition is located downstream from the pump. The fluorescence from the probe beam is collected by a micro-photomultiplier tube (Hamamatsu H12403-20). The laser beam separation L = 20 mm, while the diameters of both beams are d 1 = d 2 = 1.2 mm. The dispenser current was
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A chip-scale atomic beam clock Nature Communications
2023年6月13日 A prototype chip-scale clock is realized using Ramsey CPT spectroscopy of the atomic beam over a 10 mm distance and demonstrates a fractional frequency stability of ≈1.2 × 10 −9 / \ (\sqrt ...
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Multi-mode of Four and Six Wave Parametric Amplified Process
2017年3月3日 Here only pump beam E 1 and probe beam E p interact inside the rubidium vapor, ... Qin, Z. Z. et al. Experimental generation of multiple quantum correlated beams from hot rubidium vapor. Phys. Rev.
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(PDF) Observation of Nonlinear Optical Interactions of
2008年6月13日 We report the observation of low-light level optical interactions in a tapered optical nanofiber (TNF) embedded in a hot rubidium vapor. The small optical mode area plays a significant role in the ...
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Squeezing bandwidth controllable twin beam light and phase
the FWM process as beam splitters is reviewed in Section 2. Conclusions are summarized in Section 3. 1 Quantum light source In this section, we report the realization of low-frequency and controllable-bandwidth squeezing based on a nondegen-erate FWM process in a hot rubidium vapor at the optical D1 transition.
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arXiv:1806.04797v1 [quant-ph] 12 Jun 2018
43. N. Corzo, A. M. Marino, K. M. Jones, and P. D. Lett, Multi-spatial-mode single-beam quadrature squeezed states of light from four-wave mixing in hot rubidium vapor, Opt. Express 19, 21358 (2011). 1. Introduction Squeezed states of light have gained a signi cant amount of attention given that they exhibit
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Multi-Spatial-Mode Single-Beam Quadrature Squeezed States
2011年10月24日 We present experimental results on the generation of multi-spatial-mode, single-beam, quadrature squeezed light using four-wave mixing in hot Rb vapor. ... Multi-Spatial-Mode Single-Beam Quadrature Squeezed States of Light from Four-Wave Mixing in Hot Rubidium Vapor. Published. October 24, 2011. Author(s)
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[PDF] Bright narrowband biphoton generation from a hot rubidium
2017年4月17日 Meanwhile, we apply a spatially tailored optical pumping beam for reduction of the Raman noise and obtain a violation of the Cauchy-Schwarz inequality by a factor of 1023. We demonstrate the generation of high-quality narrowband biphotons from a Doppler-broadened hot rubidium atomic vapor cell. Choosing a double-Λ atomic energy
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Four-wave-mixing stopped light in hot atomic rubidium
2009年1月25日 mode in a hot atomic rubidium vapour. The present scheme is based on four-wave mixing using two input fields (coupling beam and signal) in a three-level atomic ensemble, and is closely related
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(PDF) Quantum optical devices based on four-wave mixing in hot rubidium
2015年6月1日 Here, we demonstrate an AOT driven by a weak light beam with an energy density of 2.5 × 10−5 photons/(λ2/2π) (corresponding to 6 yJ/(λ2/2π) and about 800 total photons) using the double-Λ ...
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Demonstration of an integrated nanophotonic chip-scale alkali
2021年3月11日 The laser beam passed through our micrometer-scale Rb cell, which was heated to ~120 °C, corresponding to an Rb density of ~1.6 10 13 cm 3. Two lensed fibers were used to collect the light ...
获取价格Bright narrowband biphoton generation from a hot rubidium
m. To conclude, we have optimized the generation of nar-rowband ( 2 MHz) biphotons from a hot Rb atomic vapor cell with a high contrast ratio of 56, and a bright photon pair rate of 40 000 s 1. The biphoton spectral brightness reaches as high as 14 000 s 1MHz 1 in our hot atomic vapor cell system. This bright signal is due to two key ...
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Modulation gain and squeezing by dressed state in hot atomic
2019年4月9日 Abstract. We report that the optical gain and intensity difference squeezing (IDS) of four-wave mixing can be controlled using an external dressing field in a hot rubidium atomic system. The intensity of the parametric amplified four-wave mixing (PA-FWM) signal in the probe and corresponding conjugate channels can be enhanced using
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