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	1. Hyperentanglement concentration for entanglement of polarization and orbital angular momentum
	LI Chun-Yan,Shen Yong,SUN Shi-Hai
	Physics 26 May 2016
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	Abstract:We propose two hyperentanglement concentration protocols for two photons entangled states in the polarization and orbital angular momentum degrees of freedom. The two cases distilling a maximally hyperentangled state from less-entangled pure state with unknown parameters and known parameters are dissected respectively. Both of the schemes require only simple optical devices which makes our scheme more feasible with current technology and can be exploited to hyperentangled GHZ state and quantum repeaters of quantum network simply. We also discuss the success efficiency of our schemes in the paper. Both of them has a maximum success probability in corresponding situation.
	TO cite this article:LI Chun-Yan,Shen Yong,SUN Shi-Hai. Hyperentanglement concentration for entanglement of polarization and orbital angular momentum[OL].[26 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4691096


	2. Observation of multi-Raman gain resonances in Rubidium vapor
	LI Yunke,SONG Jingnuan,WEI Dong,GAO Hong
	Physics 24 May 2016
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	Abstract:We present an experimental study of multi-Raman gain resonances in a hot Rubidium vapor. The experiment is performed based on a high-efficiency four-wave mixing process due to Raman-driven coherence in a double-Λ configuration. The Raman gain resonance for Rb atoms under a bias magnetic field is shown to split into five or six peaks, depending on the orientation of the magnetic field. The formed multi-Raman gain resonances have potential applications in measurement of magnetic fields and generation of multi-frequency correlated twin beams.
	TO cite this article:LI Yunke,SONG Jingnuan,WEI Dong, et al. Observation of multi-Raman gain resonances in Rubidium vapor[OL].[24 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4692563

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	3. Measurement-device-independent quantum key distribution communication in collective noise
	LI Chun-Yan,SUN Shi-Hai
	Physics 23 May 2016
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	Abstract:The novel Measurement-device-independent quantum key distribution scheme has been proposed to close all the loopholes caused by the imperfect of measurement devices. Collective noise in quantum channel will impact the polarization modes of photons, reducing the communication efficiency and security. We present a fault-tolerant Measurement-device-independent quantum key distribution scheme based on the decoherence-free subspace which will overcome the collective noise. Logistic-state is comprised by two pairs photons in Bell state which can be achieved with parametric-down conversion source and the mutually unbiased bases are completed by the photons order rearrangement technology.
	TO cite this article:LI Chun-Yan,SUN Shi-Hai. Measurement-device-independent quantum key distribution communication in collective noise[OL].[23 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4687599


	4. Photon statistics of pulse pumped four wave mixing in fiber with weak signal injection
	LIU Nan-Nan,LIU Yu-Hong,LI Jia-Min,LI Xiao-Ying
	Physics 06 May 2016
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	Abstract:In this paper, the photon statistics of pulse pumped four wave mixing in fibers with weak coherent signal injection are studied by measuring the intensity correlation functions of individual signal and idler fields. The experimental results show the intensity correlation function of individual signal (idler) field decreases with the intensity of signal injection. After applying narrow band filter in signal (idler) band, the value of decreases from 1.9±0.02 (1.9±0.02) to 1.03±0.02 (1.05±0.02) when the intensity of signal injection varies from 0 to 120 photons/pulse. The results indicate that the photon statistics changes from Bose-Einstein distribution to Poisson distribution. We calculate the intensity correlation functions by using the multimode theory of four wave mixing in fibers. The theoretical curves well fit the experimental results. Our investigation will be useful for mitigating the crosstalk between quantum and classical channels in a dense wavelength division multiplexing network.
	TO cite this article:LIU Nan-Nan,LIU Yu-Hong,LI Jia-Min, et al. Photon statistics of pulse pumped four wave mixing in fiber with weak signal injection[OL].[ 6 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4687417


	5. Generation and manipulation of infrared solitons in Landau-quantized graphene
	DING Chunling,YU Rong,LI Ruoping,ZHANG Duo
	Physics 04 May 2016
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	Abstract:Here we present an analytical and numerical analysis of the soliton formation and manipulation in Landau-quantized graphene. We find that the results of numerical simulations from density-matrix equations without any approximations are consistent with the analytical expressions of bright and dark solitons by virtue of slowly varying envelope approximation and perturbation theory. The mechanism of soliton generation is ascribed to the balance between the nonlinearity-induced self-phase modulation and dispersive spreading. Also, the unusual electronic band structure and unique optical properties of graphene provide more degrees of freedom for us to manipulate the formation and propagation of infrared solitons in graphene ensemble. Our investigations have potential implications in telecommunication and solid-state quantum information processing.
	TO cite this article:DING Chunling,YU Rong,LI Ruoping, et al. Generation and manipulation of infrared solitons in Landau-quantized graphene[OL].[ 4 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4686388


	6. A π/2 Phase Advance of Photons Generated in Stimulated Emission Relative to Incident Light
	ZHAO Zhenming,KONG Mei,XU Yameng
	Physics 10 February 2016
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	Abstract:Atomic stimulated emission is a process by which an incoming photon induces an excited atom to release a new photon. Current perspective believes that the new photon has an identical state as the incident one. However, it has contradictions with basic principles of quantum mechanics and a optical gain process. Through analyzing the gain process in the laser substance by wave optics, we discover that the stimulated emission from the atomic ensemble superposition is in phase with the incident wave, while the emission from a single atom is π/2 phase advanced, and the stimulated emission process is not one of photon cloning.
	TO cite this article:ZHAO Zhenming,KONG Mei,XU Yameng. A π/2 Phase Advance of Photons Generated in Stimulated Emission Relative to Incident Light[J].


	7. A novel hybrid plasmonic waveguide with ultra-long propagation distance and confined at the subwavelength scale
	Li Xin,Yang Hujiang
	Physics 31 December 2015
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	Abstract:This study reports a novel horizontal symmetric hybrid plasmonic waveguide (HSHPW), which consists of a cylindrical Ag nanowire and high-index dielectric layers Si laying perpendicular to the substrate SiO2. It combines the advantages of hybrid SPP, long-range SPP and wedge mode for the nanoscale confinement and guiding of light on a chip. The waveguide could remarkably minimize the energy attenuation resulting from Ohmic losses while retaining highly confined modes guided in the low-index nanoscale gaps between the Ag nanowire and the high-index Si. The geometric dependence of the mode characteristics on the proposed structure is analyzed in detail, showing long propagation lengths beyond 7.8 mm with normalized mode area about 0.005 and our design also features an overall advantage of large improvement of Figure of Merit (FOM) than any other properties of HPW structures published in recent years. Thus the HSHPW is very helpful for building high-density photonic integrated circuits.
	TO cite this article:Li Xin,Yang Hujiang. A novel hybrid plasmonic waveguide with ultra-long propagation distance and confined at the subwavelength scale[OL].[31 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4674239


	8. Effective generation of macroscopic entanglement between indirect coupled mechanical oscillators
	SHEN Weiwei,WANG Chuan
	Physics 29 December 2015
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	Abstract:We investigate a theoretical method of entanglement generation using the system consist of Rydberg atomic ensemble and two macroscopic mechanical oscillators. By eliminating the interaction of the atomic ensemble, we find the effective interaction by exchanging the virtual phonons between the two mechanical oscillators. Usually the phonon exchange interaction is very weak compared with the atom-oscillator interaction, we show that atom-resonators dipole-dipole coupling could be transferred to indirect mechanical coupling interaction in large detuning conditions. The system can further be applied for entanglement generation on the mechanical mode, and also be used for single phonon switch.
	TO cite this article:SHEN Weiwei,WANG Chuan. Effective generation of macroscopic entanglement between indirect coupled mechanical oscillators[OL].[29 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4673649


	9. A scheme of optical network for quantum cryptography based on wavelength division multiplexing
	LI Ruixue,MA Haiqiang,WEI Kejin,ZHU Wu
	Physics 21 December 2015
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	Abstract:In this paper we present a scheme of optical network for quantum cryptography based on wavelength division multiplexing. It allows for a simple, cost-effective and reliable deployment and accomplishes time division multiplexing at the same time. The way of phase encoding and polarization measurement is also vertified. The wavelngth of the pulse is 1550nm. A high visibility of 96.96% is obtained. The visibility of this system can be maintained perpetually without any adjustment to the system every time we test the system.
	TO cite this article:LI Ruixue,MA Haiqiang,WEI Kejin, et al. A scheme of optical network for quantum cryptography based on wavelength division multiplexing[OL].[21 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4671361


	10. Investigation of Elliptical Vortex Beams Propagating in Atmospheric Turbulence by Numerical Simulations
	TAO Zhang,Wang Haiyan
	Physics 16 December 2015
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	Abstract:In this paper, we numerically investigate the propagation of vector elliptical vortex beams in turbulent atmosphere. Numerical simulations are realized with random phase screen. It is shown that the on-axis scintillation index can be effectively influenced by the properties of elliptical vortex beam and the turbulence of atmosphere. We find that the topological charge ,the beam width and the ratio of minor axis to major axis of an ellptical vortex beam are definitely important in determing the scintillation index. We also investigate the intensity of elliptical vortex beams when propagating in turbulent atmosphere. The result shows that the distribution of intensity and phase can rotate, which criticaly depended on the properties of elliptical beams.
	TO cite this article:TAO Zhang,Wang Haiyan. Investigation of Elliptical Vortex Beams Propagating in Atmospheric Turbulence by Numerical Simulations[OL].[16 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4668966

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