传统的科技馆展厅控制系统在设备改变时需要手动进行操作,往往无法及时改变设备的运行状态以适应游客的需求。为此,设计了基于远距离无线电(Long Range Radio,LoRa)物联网的科技馆展厅智能控制系统。在硬件上,设计数据采集器和控制模块...传统的科技馆展厅控制系统在设备改变时需要手动进行操作,往往无法及时改变设备的运行状态以适应游客的需求。为此,设计了基于远距离无线电(Long Range Radio,LoRa)物联网的科技馆展厅智能控制系统。在硬件上,设计数据采集器和控制模块,以提高工作效率和避免数据丢失,软件方面,设计信息命令接收模块,并利用数据处理模块对接收到的命令进行数据处理,在LoRa物联网技术的基础上,结合模块设计,实现科技馆展厅智能控制,系统测试结果表明该研究方法具备具有良好的反馈速度,系统的基础运行性能更好。展开更多
A scheme for probabilistic teleporting an unknown two-particle state of general formation by partly pure entangled four-particle state is proposed. It is shown that after performing two Bell state measurements, proper...A scheme for probabilistic teleporting an unknown two-particle state of general formation by partly pure entangled four-particle state is proposed. It is shown that after performing two Bell state measurements, proper unitary transformation and the measurement on an auxiliary qubit, the unknown two-particle state of general formation, which was destroyed at one place, can be reconstructed at another place with certain probability.展开更多
Two kinds of -particle d-dimensional Schmidt-form entangled state teleportation protocols are presented. In the first protocol, the teleportation is achieved by -dimensional Bell-basis measurements, while in the secon...Two kinds of -particle d-dimensional Schmidt-form entangled state teleportation protocols are presented. In the first protocol, the teleportation is achieved by -dimensional Bell-basis measurements, while in the second protocol it is realized by -dimensional GHZ-basis measurement.展开更多
A controlled teleportation scheme is presented.In this scheme,quantum information of a single-qubit stateor an entangled two-qubits state is transmitted from a sender (Alice) to a receiver (Charlie) via a four-particl...A controlled teleportation scheme is presented.In this scheme,quantum information of a single-qubit stateor an entangled two-qubits state is transmitted from a sender (Alice) to a receiver (Charlie) via a four-particle clusterstate under the control of the supervisor (Bob).The feature of this scheme is that the teleportation between the senderand the receiver depends on the control of the supervisor.展开更多
In this paper, we propose a protocol where one can realize reestablishment of an unknown state and its orthogonal complement state with a certain probability. In the first stage of the protocol, teleportation is perfo...In this paper, we propose a protocol where one can realize reestablishment of an unknown state and its orthogonal complement state with a certain probability. In the first stage of the protocol, teleportation is performed between Alice (a sender) and Bob (a receiver) through a nonmaximally entangled quantum channel. In the process of teleportation, Alice performs nonmaximally entangled state measurement. In the second stage of the protocol, Victor (a state preparer) disentangles leftover nonmaximally entangled states by a single-particle measurement. With the assistance of Victor Alice can reestablish the original state or produce its orthogonal state.展开更多
Recently Jiang et al.[Chin.Phys.Lett.24 (2007) 1144] gave a scheme for probabilistic controlled tele-portation of a triplet W state from the sender Alice to the distant receiver Bob.The m controlled qubits are sharedb...Recently Jiang et al.[Chin.Phys.Lett.24 (2007) 1144] gave a scheme for probabilistic controlled tele-portation of a triplet W state from the sender Alice to the distant receiver Bob.The m controlled qubits are sharedby m(s_1,s_2,...,s_m) spatially-separated supervisors.Based on transformation operator,we can extend to teleporting anarbitrary three-qubit state.The relation between the transformation operators and the Bob's unitary transformation isalso obtained.展开更多
The synthetic routes, materials properties and future applications of clay-polymer nanocomposites are reviewed. Nannocomposites are composite materials.that contain particles in the size rang 1-100 nm. The particles g...The synthetic routes, materials properties and future applications of clay-polymer nanocomposites are reviewed. Nannocomposites are composite materials.that contain particles in the size rang 1-100 nm. The particles generally have a high aspect ratio and a layered structure that maximizes bonding between the polymer and particle. Adding a small quantity of these additives (0.5%～5%) can increase many of the properties of polymer materials, such as tensile characteristics, heat distortion temperature, scratch resistance, gas permeability resistance, and flame retardancy. This new type of materials may be prepared via various synthetic routes comprising exfoliation adsorption, in-situ intercalative polymerization and melt intercalation. In this paper we report the new method for preparation EPDM-clay nanocomposites. The EPDM-clay nanocomposites were prepared by using two different approaches (direct and indirect). It is found that there is no difference between both methods but the direct method is easier, its cost is lower and industrially more practical. X-ray diffraction (XRD) and transmission electron microscopy (TEM) results showed a exfoliation structure. The mechanical properties of these nanocomposites significantly improved.展开更多
A multi-sender-controlled quantum teleportation scheme is proposed to teleport several secret quan- tum states from different senders to a distance receiver based on only one Einstein-Podolsky-Rosen (EPR) pair with co...A multi-sender-controlled quantum teleportation scheme is proposed to teleport several secret quan- tum states from different senders to a distance receiver based on only one Einstein-Podolsky-Rosen (EPR) pair with controlled-NOT (CNOT) gates.In the present scheme,several secret single-qubit quantum states are encoded into a multi-qubit entangled quantum state.Two communication modes,i.e.,the detecting mode and the message mode,are employed so that the eavesdropping can be detected easily and the teleported message may be recovered efficiently.It has an advantage over teleporting several different quantum states for one scheme run with more efficiency than the previous quantum teleportation schemes.展开更多
文摘传统的科技馆展厅控制系统在设备改变时需要手动进行操作,往往无法及时改变设备的运行状态以适应游客的需求。为此,设计了基于远距离无线电(Long Range Radio,LoRa)物联网的科技馆展厅智能控制系统。在硬件上,设计数据采集器和控制模块,以提高工作效率和避免数据丢失,软件方面,设计信息命令接收模块,并利用数据处理模块对接收到的命令进行数据处理,在LoRa物联网技术的基础上,结合模块设计,实现科技馆展厅智能控制,系统测试结果表明该研究方法具备具有良好的反馈速度,系统的基础运行性能更好。
文摘A scheme for probabilistic teleporting an unknown two-particle state of general formation by partly pure entangled four-particle state is proposed. It is shown that after performing two Bell state measurements, proper unitary transformation and the measurement on an auxiliary qubit, the unknown two-particle state of general formation, which was destroyed at one place, can be reconstructed at another place with certain probability.
文摘Two kinds of -particle d-dimensional Schmidt-form entangled state teleportation protocols are presented. In the first protocol, the teleportation is achieved by -dimensional Bell-basis measurements, while in the second protocol it is realized by -dimensional GHZ-basis measurement.
基金National Natural Science Foundation of China under Grant No.10404010the Scientific Research Fund of the Educational Department of Jiangxi Province under Grant No.112[2006]the Talent Fund of Jiangxi Normal University under Grant Nos.1186 and 1187
文摘A controlled teleportation scheme is presented.In this scheme,quantum information of a single-qubit stateor an entangled two-qubits state is transmitted from a sender (Alice) to a receiver (Charlie) via a four-particle clusterstate under the control of the supervisor (Bob).The feature of this scheme is that the teleportation between the senderand the receiver depends on the control of the supervisor.
文摘In this paper, we propose a protocol where one can realize reestablishment of an unknown state and its orthogonal complement state with a certain probability. In the first stage of the protocol, teleportation is performed between Alice (a sender) and Bob (a receiver) through a nonmaximally entangled quantum channel. In the process of teleportation, Alice performs nonmaximally entangled state measurement. In the second stage of the protocol, Victor (a state preparer) disentangles leftover nonmaximally entangled states by a single-particle measurement. With the assistance of Victor Alice can reestablish the original state or produce its orthogonal state.
基金Natural Science Foundation of Shaanxi Province under Grant No.2004A15the Science Plan Foundation of the Education Department of Shaanxi Province under Grant No.05JK288
文摘Recently Jiang et al.[Chin.Phys.Lett.24 (2007) 1144] gave a scheme for probabilistic controlled tele-portation of a triplet W state from the sender Alice to the distant receiver Bob.The m controlled qubits are sharedby m(s_1,s_2,...,s_m) spatially-separated supervisors.Based on transformation operator,we can extend to teleporting anarbitrary three-qubit state.The relation between the transformation operators and the Bob's unitary transformation isalso obtained.
文摘The synthetic routes, materials properties and future applications of clay-polymer nanocomposites are reviewed. Nannocomposites are composite materials.that contain particles in the size rang 1-100 nm. The particles generally have a high aspect ratio and a layered structure that maximizes bonding between the polymer and particle. Adding a small quantity of these additives (0.5%～5%) can increase many of the properties of polymer materials, such as tensile characteristics, heat distortion temperature, scratch resistance, gas permeability resistance, and flame retardancy. This new type of materials may be prepared via various synthetic routes comprising exfoliation adsorption, in-situ intercalative polymerization and melt intercalation. In this paper we report the new method for preparation EPDM-clay nanocomposites. The EPDM-clay nanocomposites were prepared by using two different approaches (direct and indirect). It is found that there is no difference between both methods but the direct method is easier, its cost is lower and industrially more practical. X-ray diffraction (XRD) and transmission electron microscopy (TEM) results showed a exfoliation structure. The mechanical properties of these nanocomposites significantly improved.
基金supported by National Natural Science Foundation of China under Grant Nos.60472018,60773085,and 60773012Natural Science Foundation of Hunan Province under Grant No.07JJ3128+1 种基金Postdoctoral Science Foundation of China under Grant No.20070420184in part by Ministry of Information and Communication (MIC) under the IT Foreign Specialist Inviting Program (ITFSIP) supervised by IIFA and ITIC supervised by IITA,Korea Research Foundation KRF-2007-521-D00300,and C1012-0001
文摘A multi-sender-controlled quantum teleportation scheme is proposed to teleport several secret quan- tum states from different senders to a distance receiver based on only one Einstein-Podolsky-Rosen (EPR) pair with controlled-NOT (CNOT) gates.In the present scheme,several secret single-qubit quantum states are encoded into a multi-qubit entangled quantum state.Two communication modes,i.e.,the detecting mode and the message mode,are employed so that the eavesdropping can be detected easily and the teleported message may be recovered efficiently.It has an advantage over teleporting several different quantum states for one scheme run with more efficiency than the previous quantum teleportation schemes.
