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Fault-Tolerate Three-Party Quantum Secret Sharing over a Collective-Noise Channel

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Chinese Physics Letters 2011年第2期28卷 35-38页

作者： li Chun-yan li yan-song Key Laboratory for Atomic and Molecular Nanosciences and Department of Physics Tsinghua UniversityBeijing 100084 Tsinghua National Laboratory for Information Science and technology Beijing 100084

We present a fault-tolerate three-party quantum secret sharing(QSS)scheme over a collective-noise ***-free subspaces are used to tolerate two noise modes,a collective-dephasing channel and a collective-rotating channel,*** this scheme,the boss uses two physical qubits to construct a logical qubit which acts as a quantum channel to transmit one bit information to her two *** agents can get the information of the private key established by the boss only if they *** boss Alice encodes information with two unitary *** single-photon measurements are required to rebuilt Alice's information and detect the security by the agents Bob and Charlie,not Bell-state ***,Almost all of the photons are used to distribute information,and its success efficiency approaches 100%in theory.

关键词： theory collective quantum

Quantum Key Distribution Based on a Weak-Coupling Cavity QED Regime

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Chinese Physics Letters 2011年第12期28卷 28-31页

作者： li Chun-yan li yan-song State Key Laboratory of Low-dimensional Quantum Physics and Department of PhysicsTsinghua UniversityBeijing 100084 Tsinghua National Laboratory for Information Science and Technology Beijing 100084 Department of Physics National University of Defense TechnologyChangsha 410073

We present a quantum key distribution scheme using a weak-coupling cavity QED regime based on quantum dense *** entanglement statesof photons and electrons are used to distribute *** just need to transmit photons without storing them in the *** electron confined in a quantum dot,which is embedded in a microcavity,is held by one of the legitimate users throughout the whole communication *** the polarization of a single photon and spin of electron measurements are applied in this protocol,which are easier to perform than collective-Bell state *** optical apparatus,such as a special polarizing beam splitter in a circular basis and single photon operations,make it more flexible to realize under current *** efficiency will approach 100%in the ideal *** security of the scheme is also discussed.

关键词： process quantum scheme

Distributed parametric modeling and simulation of light polarization states using magneto-optical sensing based on the Faraday effect

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Science China(Technological Sciences) 2016年第12期59卷 1899-1910页

作者： li yan song liU Jun CAO li Xin liu Qi Zhi School of Electrical and Electronic Engineering North China Electric Power University

To solve the problems encountered in practical processes of magneto-optical sensing, the infinitesimal distributed-parameter model and finite-element accumulation of different dielectric properties of micromaterials were used to describe the evolution of light polarization states, instead of the previously commonly used method of lumped-parameter simulation, thus essentially explaining the mechanism of sensing, magneto-optical effects, and related factors, and achieving multiphysics coupling using the COMSOL finite-element analysis method. Considering the cases of the Faraday effect without and with line birefringence, the magneto-optical effect and output characteristics of an infinitesimal magneto-optical sensor were simulated and studied. The results verified the effectiveness of the infinitesimal sensor model. Because the magnetic field, stress, and temperature changes alter the dielectric properties of magneto-optical materials, the finite-element accumulation method lays a good foundation for research on theoretical analysis and performance of magneto-optical sensors affected by factors such as the magnetic field, temperature, and stress.

关键词： magneto-optical sensor Faraday effect linear birefringence infinitesimal distributed-parameter model multi-physics coupling COMSOL

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废金催化剂中提取金的工艺研究

有色矿冶 2024年第3期40卷 33-35页

作者：李民轩李岩松王大维沈阳中色稀贵金属新材料有限公司辽宁沈阳110141

随着石油化工以及有机合成工业领域的发展,黄金催化剂的需求量日益增加。从废金催化剂中高效地回收黄金,不但降低了催化剂的使用成本,而且满足国家绿色发展的环保观念。因此,实现黄金的高效回收,具有十分重要的作用和意义。本文介绍了... 详细信息

随着石油化工以及有机合成工业领域的发展,黄金催化剂的需求量日益增加。从废金催化剂中高效地回收黄金,不但降低了催化剂的使用成本,而且满足国家绿色发展的环保观念。因此,实现黄金的高效回收,具有十分重要的作用和意义。本文介绍了一种高效便捷的黄金回收工艺,具有回收率高,操作简便,生产成本低等特点,有较高的工业推广价值。

关键词：废催化剂黄金高效回收缓冲液

Two Kinds of Two-Boson Realizations of Generally Deformed Algebras with Three Generators

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Communications in Theoretical Physics 2007年第3期47卷 529-534页

作者： RUAN Dong li yan-song SUN Hong-Zhou Center of Theoretical Nuclear Physics~ National Laboratory of Heavy Ion Accelerator Lanzhou 730000 China Department of Physics Tsinghua University Beijing 100084 China Key Laboratory of Quantum Information and Measurements Tsinghua University Beijing 100084 China Institute of Theoretical Physics Academia Sinica Beijing 100080 China

In this paper two kinds of two-boson realizations of generally deformed algebras with three generators are obtained by generalizing the Jordan-Schwlnger realizations of SU（2） and SU（1,1）. For each kind, a unitary realization and a non-unitary realizatlon, together with the properties of their acting spaces, are discussed. Similarity transformations that relate the non-unitary realizations to the unitary ones are given by solving unitarization equations.

关键词： deformed algebra boson realization unitarization equation

Secure Direct Communication Using Ensembles with the Same Compressed Density Matrix

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Communications in Theoretical Physics 2006年第3X期46卷 440-442页

作者： WANG Chuan li yan-song LONG Gui-Lu Department of Physics and Key Laboratory for Quantum Information and Measurcments Tsinghua University Beijing 100084 China Key Laboratory for Atomic and Molecular Nanosciences Tsinghua University Beijing 100084 China

In this paper, a quantum secure direct communication protocol using ensembles with the same density matrix is proposed. The two communication parties can realize the message transmission using this method through a quantum channel, each bit of information can be transmitted using an ensemble and read out through global measurement. The eavesdropping behavior can be detected through the channel diagnoses.

关键词： quantum secure direct communication ensembles with the same density matrix global measurement

Rotation-translation coupling of a double-headed Brownian motor in a traveling-wave potential

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Frontiers of physics 2021年第3期16卷 165-175页

作者： Wei-Xia Wu Chen-Pu li yan-li song Ying-Rong Han Zhi-Gang Zheng Science Education Department Beijing Institute of Graphic CommunicationBeijing102600China College of Science Hebei University of ArchitectureZhangjiakou075000China School of Science Tianjin UniversityTianjin300072China School of Science Hebei University of TechnologyTianjin300401China Institute of Systems Science and College of Information Science and Engineering Huaqiao UniversityXiamen361021China

Considering a double-headed Brownian motor moving with both translational and rotational degrees of freedom,we investigate the directed transport properties of the system in a traveling-wave *** is found that the traveling wave provides the essential condition of the directed transport for the system,and at an appropriate angular frequency,the positive current can be optimized.A general current reversal appears by modulating the angular frequency of the traveling wave,noise intensity,external driving force and the rod *** transforming the dynamical equation in traveling-wave potential into that in a tilted potential,the mechanism of current reversal is *** both cases of Gaussian and Lévy noises,the currents show similar dependence on the ***,the current in the tilted potential shows a typical stochastic resonance *** external driving force has also a resonance-like effect on the current in the tilted *** the current in the traveling-wave potential exhibits the reverse behaviors of that in the tilted ***,the currents obviously depend on the stability index of the Lévy noise under certain conditions.

关键词： Brownian motor rotation-translation coupling traveling-wave potential current reversal

Ultra-flexible all-in-one anti-freeze photothermally enhanced supercapacitors

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Nano Research 2024年第8期17卷 7221-7229页

作者： Yongxin Lu Keke li yan-yan song Zhida Gao Condense matter of physics College of ScienceNortheazistern UniversityShenyang 110004China

Wearable electronics powered by flexible energy storage devices have captured global *** low-temperature conditions,unfortunately,solidification of flexible hydrogel electrolyte and decreased pseudo-capacity of these devices largely hamper their practical *** this study,photothermally-active Prussian blue(PB)was introduced onto poly(3,4-ethylenedioxythiophene)/polyacrylamide(PEDOT/PAM)networks to address the challenges of electrolyte solidification and degraded pseudo-capacitance for flexible all-in-one device at low *** as-constructed PB/PEDOT/PAM hydrogel device delivers stable electrochemical performance and remarkable mechanical property with 1652%***,this hydrogel device well retains its flexibility in cold environment with a freezing point below−30℃.The incorporation of PB extends the voltage range to 1.5 V as a single device,thus significantly enhancing the electrochemical performance as an all-inone integrated *** from the outstanding photo-to-thermal conversion ability of embedded PB nanocubes,the temperature of the assembled all-in-one PB/PEDOT/PAM device increased from^(−2)0 to 17.7℃ after solar-light irradiation for only 5 ***,the degraded pseudo-capacitance was subsequently boosted to 287.1%of its original capacitance at−20℃.This study establishes a connection between flexible all-solid-state hydrogel devices and photothermally enhanced pseudocapacitors in freezing environments,thereby expanding the potential applications of multi-functional pseudo-capacitors.

关键词： all-in-one energy storage devices all-solid-state photothermal flexible low temperatures

Measuring-Basis Encrypted Quantum Key Distribution with Four-State Systems

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Communications in Theoretical Physics 2007年第1期47卷 49-52页

作者： CHEN Pan li yan-song DENG Fu-Guo LONG Gui-Lu Key Laboratory for Quantum Information and Measurements and Department of Physics Tsinghua University Beijing 100084 China The Key Laboratory of Beam Technology and Material Modification of Ministry of Education and Institute of Low Energy Nuclear Physics Beijing Normal University Beijing 100875 China Beijing Radiation Center Beijing Normal University Beijing 100875 China Key Laboratory of Atomic and Molecular Sciences Tsinghua University Beijing 100084 China

A measuring-basis encrypted quantum key distribution scheme is proposed by using twelve nonorthogohal states in a four-state system and the measuring-basis encryption technique. In this scheme, two bits of classical i... 详细信息

关键词： quantum key distribution measuring-basis encryption four-state system