检索结果-南通市图书馆

Test of Nonlocality with an Atom-Field Entangled State

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2002年第7期38卷 9-10页

作者： zheng Shi-biao Department of Electronic Science and Applied Physics Fuzhou University Fuzhou 350002 China

We propose a scheme for the test of nonlocality with atom-field entanglement. An atom is sent through a cavity filled with a coherent field with a small amplitude. The dispersive interaction leads to atom-field *** the field is driven by a classical current. The Bell inequality can be tested by the joint measurement of the parity of the field and the atomic state.

关键词： nonlocality, entangled state, Bell inequality

政府数据治理对制造业出口技术复杂度的影响研究

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

现代财经（天津财经大学学报） 2024年第10期 39-56页

作者：陈晔婷李正彪何思源云南师范大学经济学院云南昆明650500 云南财经大学商学院云南昆明650221

随着数字时代的到来,数据成为核心生产驱动力。政府对数据进行有效治理为释放数据新动能、培育制造业竞争新优势提供了新机遇。文章从制造业出口技术复杂度的视角出发,以历年政府公开的数据治理政策为事实依据,基于深度学习(DL)的自然... 详细信息

随着数字时代的到来,数据成为核心生产驱动力。政府对数据进行有效治理为释放数据新动能、培育制造业竞争新优势提供了新机遇。文章从制造业出口技术复杂度的视角出发,以历年政府公开的数据治理政策为事实依据,基于深度学习(DL)的自然语言处理(NLP)技术构建2011—2021年的政府数据治理综合指标,并探讨了其对制造业出口技术复杂度的影响机制。机制分析表明,创新资源配置效应、数据市场化效应和产业升级效应是政府数据治理影响制造业出口技术复杂度的重要传导路径。进一步研究发现,政府数据治理政策对东部、西部地区和高技术制造业的作用更大。我国应进一步调整并优化完善数据治理体系,打破妨碍数据流动的制度壁垒,充分发挥数据要素价值,以数据赋能产业实现价值创造,提升制造业在国际市场上的竞争力和价值创造能力。

关键词：政府数据治理自然语言处理数据市场化制造业出口技术复杂度

Quantum Phase Gates for Trapped Ions via Adiabatic Passage

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2007年第4X期48卷 626-628页

作者： zheng Shi-biao Department of Electronic Science and Applied Physics Fuzhou University Fuzhou 350002 China

We propose a scheme to produce quantum phase gates for trapped ions. Taking advantage of the adiabatic evolution, the operation is insensitive to small fluctuations of experimental parameters. Furthermore, the spontaneous emission is suppressed since the ions have no probability of being populated in the electronic excited states.

关键词： quantum phase gate trapped ion adiabatic passage

Quantum Discrete Fourier Transform in an Ion Trap System

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2007年第6期47卷 1049-1052页

作者： zheng Shi-biao Department of Electronic Science and Applied Physics Fuzhou University Fuzhou 350002 China

We propose two schemes for the implementation of quantum discrete Fourier transform in the ion trap systern. In each scheme we design a tunable two-qubit phase gate as the main ingredient. The experimental implementat... 详细信息

关键词： quantum discrete Fourier transform quantum computation ion trap

Generation of Superpositions of Two-Mode Coherent States for the Motion of Two Trapped Ions

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2005年第6X期44卷 1071-1072页

作者： zheng Shi-biao Department of Electronic Science and Applied Physics Fuzhou University Fuzhou 350002 China

We propose a method for the generation of superpositions of two-mode coherent states for the center-of-mass and relative vibrational modes of two trapped ions. In the scheme the ions are driven by a single travelling-wave laser field tuned to the carrier. Then a measurement of the internal states collapses the vibrational modes to the entangled coherent state.

关键词： superposition of two-mode coherent states trapped ion vibrational mode

Entropy of Kerr-Newman Black Hole Continuously Goes to Zero when the Hole Changes from Nonextreme Case to Extreme Case

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1999年第9期16卷 698-700页

作者： ZHAO zheng ZHU Jian-yang LIU Wen-biao Department of Physics Beijing Normal UniversityBeijing 100875

A new formulation of the Bekenstein-Smarr formula of a Kerr-Newman black hole is given. The re-defined black hole entropy continuously goes to zero as the black hole temperature approaches absolute zero, which satisfies the Nernst theorem. Our new result suggests that the Kerr-Newman black hole should be regarded as a composite thermodynamic system composed of two sub-systems, its outer horizon and its inner horizon. There exists a new quantum thermal effect. “Hawking absorption”, near the inner horizon of the black hole.

关键词： horizon Newman black

High-Speed Generation of Entangled States for Two Three-Level Atoms

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2007年第3期47卷 555-556页

作者： zheng Shi-biao Department of Electronic Science and Applied Physics Fuzhou University Fuzhou 350002 China

A scheme is presented for generating entangled states for two three-level atoms in a cavity. In the scheme two atoms simultaneously interact with a cavity mode with a small detuning. Thus, the operation time is very ... 详细信息

关键词： entangled state three-level atom cavity

在线全文

学校读者我要写书评

暂无评论

闰细胞去极化激活电流的发现与鉴定

生理学报 2024年第1期76卷 52-58页

作者：史文森丁政孙琪段新鹏张成标徐州医科大学生理学教研室徐州221000

本实验室首次在肾脏远端肾单位闰细胞记录到去极化激活电流,并根据电生理学和药理学特征鉴定其离子通道的类型。用Axon Multi Clamp 700B膜片钳系统记录C57BL/6J小鼠肾脏远端肾单位肾小管细胞全细胞电流,并观察钾通道抑制剂对闰细胞去... 详细信息

本实验室首次在肾脏远端肾单位闰细胞记录到去极化激活电流,并根据电生理学和药理学特征鉴定其离子通道的类型。用Axon Multi Clamp 700B膜片钳系统记录C57BL/6J小鼠肾脏远端肾单位肾小管细胞全细胞电流,并观察钾通道抑制剂对闰细胞去极化激活电流的影响。此外,应用免疫荧光技术研究介导该电流的离子通道的具体定位。结果显示,当细胞外液为等钾溶液时,可在闰细胞记录到去极化激活电流,但该去极化激活电流未在主细胞观察到。在远端肾单位闰细胞记录到的去极化激活电流能被电压门控钾通道Kv4.1抑制剂阻断。Kv4.1蛋白免疫荧光只存在于闰细胞,未在主细胞观察到。Kv4.1蛋白免疫荧光可见于闰细胞的管腔膜和管周膜,但管腔膜的荧光强度高于管周膜。由此得出结论,闰细胞去极化激活电流由Kv4.1钾通道介导,该通道主要表达在闰细胞的管腔膜上。

关键词：肾脏远端肾单位 Kv4.1钾通道闰细胞氢-钾泵

Criticality-enhanced quantum sensing in the anisotropic quantum Rabi model

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2023年第5期66卷 89-96页

作者： Xin Zhu Jia-Hao Lü Wen Ning Fan Wu Li-Tuo Shen Zhen-biao yang Shi-biao zheng Fujian Key Laboratory of Quantum Information and Quantum Optics College of Physics and Information EngineeringFuzhou UniversityFuzhou 350108China

Quantum systems that undergo quantum phase transitions exhibit divergent susceptibility and can be exploited as probes to estimate physical *** generalize the dynamic framework for criticality-enhanced quantum sensing by the quantum Rabi model(QRM)to its anisotropic counterpart and derive the correspondingly analytical expressions for the quantum Fisher information(QFI).We find that the contributions of the rotating-wave and counterrotating-wave interaction terms are symmetric at the limit of the infinite ratio of qubit frequency to field frequency,with the QFI reaching a maximum for the isotropic *** finite frequency scaling,we analytically derive the inverted variance of higher-order correction and find that it is more affected by the rotating-wave coupling than by the counterrotating-wave coupling.

关键词： quantum sensing quantum Fisher information anisotropic quantum Rabi model