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| There are 898 papers published in subject: since this site started. | |||
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| 1. Comment on Quantum private query with perfect user privacy against a joint-measurement attack | |||
| Wu Yali,Sun Hongxiang | |||
| Physics 22 March 2021 | |||
| Show/Hide Abstract | Cite this paper︱Full-text: PDF (473K B) | |||
| Abstract:The quantum-key-distribution (QKD)-based quantum private query (QPQ) has become a research hotspot in recent years. Although such QPQ protocols are practical, joint-measurement (JM) attack is a noteworthy threat to the security of the database. Specifically, a malicious user can illegally obtain entries more than the average number of honest users from the database. Taking Jakobi et al.\'s protocol as an example, a malicious user can obtain up to 500 bits from a database of 10000 bits in one query instead of the expected 2.44 bits. In order to prevent JM attacks, Yang et al. proposed a novel classical post-processing against the JM attack. But after analysis, we found that there are security flaws in these protocols. It is impossible to achieve joint measurement resistance in the quantum private query agreement between the two parties only through a simple classical post-processing process. | |||
| TO cite this article:Wu Yali,Sun Hongxiang. Comment on Quantum private query with perfect user privacy against a joint-measurement attack[OL].[22 March 2021] http://en.paper.edu.cn/en_releasepaper/content/4754002 | |||
| 2. Quantum state manipulation based on nitrogen-vacancy centers in diamond | |||
| WANG Jie-Qiong, ZHANG Yong | |||
| Physics 12 March 2021 | |||
| Show/Hide Abstract | Cite this paper︱Full-text: PDF (489K B) | |||
| Abstract:A scheme for quantum state manipulation based on the nitrogen-vacancy centers is proposed in the paper. The scheme uses the properties of nuclear and electronic spins to generate the Bell states and performs quantum state manipulation through a series of quantum gates. To avoid state collapse due to the measurement, the scheme transforms the entangled state consisting of electron spin and nuclear spin to the photon entangled state and uses the parity gates for probabilistic identification. The scheme is physically feasible and may provide new perspectives for NV center-based quantum state transfer and quantum information processing. | |||
| TO cite this article:WANG Jie-Qiong, ZHANG Yong. Quantum state manipulation based on nitrogen-vacancy centers in diamond[OL].[12 March 2021] http://en.paper.edu.cn/en_releasepaper/content/4754082 | |||
| 3. Plasmon Enhanced Visible Light Photocatalytic Activity of Flower-like Au-TiO2 Core-shell Nanoparticles | |||
| Youlong Chen,Liang Ma,Xiang-Bai Chen | |||
Physics 14 September 2020
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| Show/Hide Abstract | Cite this paper︱Full-text: PDF (665K B) | |||
| Abstract:Flower-like Au-TiO2 core-shell nanoparticles (NPs) were synthesized by a facile and high-yield hydrothermal method in which gold NPs were used as cores and TiF4 was used as precursor. A series of characterizations were carried out to examine the morphology, crystallinity, and composition of the nanostructures. The Au-TiO2 core-shell NPs exhibit uniform flower-like morphology, porous TiO2 shells, and strong surface plasmon resonance (SPR) absorption band in the visible light region. Hence, compared with the hollow TiO2 NPs, the Au-TiO2 core-shell NPs exhibited greatly improved photocatalytic activity for the degradation of methylene blue under visible light irradiation. Such enhancement can be ascribed to the resonant energy transfer and direct electron transfer between TiO2 and Au parts in the core-shell nanostructures. We believe that such plasmonic photosensitizers based on this enhancement mechanism would offer much more flexibility for designing solar energy materials, photocatalysts and other optoelectronic devices. | |||
| TO cite this article:Youlong Chen,Liang Ma,Xiang-Bai Chen. Plasmon Enhanced Visible Light Photocatalytic Activity of Flower-like Au-TiO2 Core-shell Nanoparticles[OL].[14 September 2020] http://en.paper.edu.cn/en_releasepaper/content/4752800 | |||
| 4. Four state Reference-Frame-Independent Quantum Key Distribution with the heralded pair-coherent sources | |||
| Yang Shun-Yu, Li Zheng-Hua, Wang Ji-Peng, Ma Hai-Qiang | |||
| Physics 06 March 2020 | |||
| Show/Hide Abstract | Cite this paper︱Full-text: PDF (530K B) | |||
| Abstract:We propose a scheme of practical four state decoy state reference-frame-independent quantum key distribution(RFI-QKD) with the heralded pair-coherent sources (HPCS). Although fewer state is used in our scheme, its performance can approach original six-state protocol. Through utilizing HPCS, we can obviously improve the performance of four state RFI-QKD in both the final key rate and the secure transmission distance compared with the protocol using weak coherent sources. Moreover, when taking source flaws, intensity fluctuations and statistical fluctuations into consideration, simulation results show that our protocol can achieve high key generation rate at long distance transmission. | |||
| TO cite this article:Yang Shun-Yu, Li Zheng-Hua, Wang Ji-Peng, et al. Four state Reference-Frame-Independent Quantum Key Distribution with the heralded pair-coherent sources[OL].[ 6 March 2020] http://en.paper.edu.cn/en_releasepaper/content/4751070 | |||
| 5. Single ionization of Ne by the ultrafast XUV laser | |||
| LEI Jianting,ZHANG Min,HAI Bang,HU Bitao,LIU Zuoye,ZHANG Shaofeng | |||
| Physics 30 December 2019 | |||
| Show/Hide Abstract | Cite this paper︱Full-text: PDF (949K B) | |||
| Abstract:Fully differential cross sections of single ionization of Ne atom by a 36.1 eV linearly polarized XUV (attosecond extreme ultraviolet) photon has been studied using a reaction microscope. We obtain photoelectron angular distribution and β-asymmetry parameter directly. The measured angular distribution and β-asymmetry parameter are in a good agreement with the previous experimental results and the most accurate theoretical calculation. | |||
| TO cite this article:LEI Jianting,ZHANG Min,HAI Bang, et al. Single ionization of Ne by the ultrafast XUV laser[OL].[30 December 2019] http://en.paper.edu.cn/en_releasepaper/content/4750388 | |||
| 6. Laser-induced vibrational distribution of nitrogen ions in two color setup | |||
| CHEN Rao,WANG Quanjun,WANG Xiaozhen,SUN Chunlin,DING Jingjie,HU Bitao,LIU Zuoye | |||
Physics 19 December 2019
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| Show/Hide Abstract | Cite this paper︱Full-text: PDF (663K B) | |||
| Abstract:We report the forward radiation lasing and absorption phenomena in pure nitrogen gas produced by a collinear two-color laser setup, consisting of a 800 nm pump and 354 nm probe pulses. The spectral components of transmitted probe pulse are attributed at 353.8 nm, 354.9 nm and 356.4 nm, corresponding to transitions in the first negative band of the singly charged nitrogen molecular ion N2+. Compared with the absorption signals at 354.9 nm and 356.4 nm, the signal at 353. nm is radiational. The present study has a further understanding of population distribution in upper vibrational state. | |||
| TO cite this article:CHEN Rao,WANG Quanjun,WANG Xiaozhen, et al. Laser-induced vibrational distribution of nitrogen ions in two color setup[OL].[19 December 2019] http://en.paper.edu.cn/en_releasepaper/content/4750184 | |||
| 7. Reduced Fine Structure Constant, and A Calculation of Gravitational Radiation of Hydrogen Atom | |||
| Yuan Xinxi | |||
| Physics 23 June 2019 | |||
| Show/Hide Abstract | Cite this paper︱Full-text: PDF (395K B) | |||
| Abstract:In this paper some speculated ideas are invented by analogy between gravity and electromagnetism. Analog to the relation between the fine structure constant and the Planck constant, planck constant of gravitational interaction is defined by the rest mass of the electron and the reduced fine structure constant. Then a recommended value of planck constant of gravitational interaction is given. If the definition is true, the reduced fine structure constant may be a common constant shared by gravitational and electromagnetic interactions. Based on the planck constant of gravitational interaction, main spectrum lines of Lyman series, Balmer series, and Paschen series of gravitational radiation of atomic Hydrogen are discussed, respectively. All the above ideas originate from a simple viewpoint that gravitational masses (the gravitational charges) should be invariant under Lorentz transformations. | |||
| TO cite this article:Yuan Xinxi. Reduced Fine Structure Constant, and A Calculation of Gravitational Radiation of Hydrogen Atom[OL].[23 June 2019] http://en.paper.edu.cn/en_releasepaper/content/4749299 | |||
| 8. High intrinsic dielectric properties for aluminates | |||
| LIU Yaoyao,LI Qiuju | |||
| Physics 27 March 2019 | |||
| Show/Hide Abstract | Cite this paper︱Full-text: PDF (2328K B) | |||
| Abstract:The dielectric properties of LaAlO3, YAlO3, SrLaAlO4, and NdCaAlO4 single crystals were examined in the temperature range of -180-800℃ and the frequency range of 100 Hz-5 MHz. A thermally activated relaxation resulting from the hopping motions of oxygen vacancies was found in these aluminates. Impedance analysis revealed that LaAlO3, YAlO3, and NdCaAlO4 show intrinsic dielectric properties in the temperature range below 200℃. While for SrLaAlO4, whose intrinsic dielectric properties can be maintained up to a higher temperature of 400℃. The aluminates show close intrinsic dielectric constant of ~20 with low dielectric loss in their intrinsic range indicating that these materials are very encouraging for gate dielectrics. | |||
| TO cite this article:LIU Yaoyao,LI Qiuju. High intrinsic dielectric properties for aluminates[OL].[27 March 2019] http://en.paper.edu.cn/en_releasepaper/content/4748042 | |||
| 9. Control synthesis and Thermoelectric Characterization of Sb2Te3 One-Dimensional Nanostructures Using Te Nanorods as Templates | |||
| ZHAO Haoting,ZHU Hangtian,LI Guannan | |||
| Physics 30 June 2018 | |||
| Show/Hide Abstract | Cite this paper︱Full-text: PDF (582K B) | |||
| Abstract:In this paper, we have demonstrated a two-step method to synthesize Sb2Te3 nanorods by using Te nanorods as the self-sacrificed templates. Impurity-free poly-crystalline Sb2Te3 nanorods have been synthesized on a large scale. Strings of Sb2Te3 nanoplatelets have been also synthesized by adjusting the reaction condition for Te nanorod precursor，which may be attributed to the nucleation and epitaxial growth of the Sb2Te3 nanoplatelets on the surface of the templates by the reaction of unconsumed K2TeO3 with Sb3+ ions in the solution. The thermoelectric transport properties of the pressed Sb2Te3 nanorods sample were measured. Enhanced seebeck coefficient and reduced thermal conductivity were observed. The high resistivity of the sample may be ascribed to unoptimized interconnections. | |||
| TO cite this article:ZHAO Haoting,ZHU Hangtian,LI Guannan. Control synthesis and Thermoelectric Characterization of Sb2Te3 One-Dimensional Nanostructures Using Te Nanorods as Templates[OL].[30 June 2018] http://en.paper.edu.cn/en_releasepaper/content/4745541 | |||
| 10. Performance improvement of ZnO based MSM UV photodetectors by Au nanoparticles | |
| LIU Wei,DONG Dayin,AN Yuehua,WANG Shunli,LI Peigang | |
| Physics 28 May 2018 | |
| Show/Hide Abstract | Cite this paper︱Full-text: | |