We propose an alternative scheme for generation of atomic Schrodinger cat states in an optical cavity. In thescheme the atoms are always populated in the two ground states and the cavity remains in the vacuum state. T...We propose an alternative scheme for generation of atomic Schrodinger cat states in an optical cavity. In thescheme the atoms are always populated in the two ground states and the cavity remains in the vacuum state. Therefore,the scheme is insensitive to the atomic spontaneous emission and cavity decay. The scheme may be generalized to thedeterministic generation of entangled coherent states for two atomic samples. In contrast with the previously proposedschemes of [Commun. Theor. Phys. 40 (2003) 103 and Chin. Phys. B 18 (2009) 1045], the required interaction time inour scheme is greatly shortened and thus the decoherenee can be effectively suppressed.展开更多
我们在离子陷井系统为一个任意的未知二水平的二离子的状态的确定、多控制的远距传物建议一个简单计划。在计划，当量隧道和需要的单一的转变可以分别地经由一个单个反响的相互作用被完成，特殊纠缠的 W 状态使用了。完成整个过程的要...我们在离子陷井系统为一个任意的未知二水平的二离子的状态的确定、多控制的远距传物建议一个简单计划。在计划，当量隧道和需要的单一的转变可以分别地经由一个单个反响的相互作用被完成，特殊纠缠的 W 状态使用了。完成整个过程的要求的时间不与代理人的数字增加。展开更多
We propose a scheme to generate various nonclassical vibrational states in the collective motion of twotrapped ions, such as squeezed states, Schrodinger cat states, and SU(2) states. It is based on Raman-type excitat...We propose a scheme to generate various nonclassical vibrational states in the collective motion of twotrapped ions, such as squeezed states, Schrodinger cat states, and SU(2) states. It is based on Raman-type excitations.Two-mode coupling between the center-of-mass and relative vibrational modes can also be realized.展开更多
An alternative scheme to approximately conditionally teleport entangled two-mode cavity state without Bell state measurement in cavity QED is proposed. The scheme is based on the resonant interaction of a ladder-type ...An alternative scheme to approximately conditionally teleport entangled two-mode cavity state without Bell state measurement in cavity QED is proposed. The scheme is based on the resonant interaction of a ladder-type three-level atom with two bimodal cavities. The entangled cavity state is reconstructed with only one atom interacting with the two cavities successively.展开更多
一个计划到电视港口没有在洞证完的钟状态测量的一个原子的三个直角的状态的重叠被建议。计划基于与一个双性人一起的二个 Lambda 类型三水平的原子的反响的相互作用形式的洞。原子的察觉倒塌原子 b 到一个 with 洞模式处于二模式的真...一个计划到电视港口没有在洞证完的钟状态测量的一个原子的三个直角的状态的重叠被建议。计划基于与一个双性人一起的二个 Lambda 类型三水平的原子的反响的相互作用形式的洞。原子的察觉倒塌原子 b 到一个 with 洞模式处于二模式的真空状态离开了的原子的起始的状态。成功的概率和这个计划的忠实分别地是 0.112 和 0.999。展开更多
<正> An alternative scheme is proposed to transfer quantum states and prepare a quantum network in cavityQED.It is based on the interaction of a two-mode cavity field with a three-level V-type atom.In the scheme...<正> An alternative scheme is proposed to transfer quantum states and prepare a quantum network in cavityQED.It is based on the interaction of a two-mode cavity field with a three-level V-type atom.In the scheme,theatom-cavity field interaction is resonant,thus the time required to complete the quantum state transfer process is greatlyshortened,which is very important in view of decoherence.Moreover,the present scheme does not require one mode ofthe cavities to be initially prepared in one-photon state,thus it is more experimentally feasible than the previous ones.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos. 60878059 and 10947147the Funds of Educational Committee of Fujian Province under Grant Nos. JA09014 and JB08066the Funds from Fujian Normal University under Grant No. 2008100220
文摘We propose an alternative scheme for generation of atomic Schrodinger cat states in an optical cavity. In thescheme the atoms are always populated in the two ground states and the cavity remains in the vacuum state. Therefore,the scheme is insensitive to the atomic spontaneous emission and cavity decay. The scheme may be generalized to thedeterministic generation of entangled coherent states for two atomic samples. In contrast with the previously proposedschemes of [Commun. Theor. Phys. 40 (2003) 103 and Chin. Phys. B 18 (2009) 1045], the required interaction time inour scheme is greatly shortened and thus the decoherenee can be effectively suppressed.
基金supported by the National Natural Science Foundation of China under Grant No.10674025the Doctoral Foundation of the Ministry of Education of China under Grant No.20070386002
基金Supported by National Natural Science Foundation of China under Grant Nos.60878059 and 10947147the Funds of Educational Committee of Fujian Province under Grant Nos.JA09014 and JB08066the Funds from Fujian Normal University under Grant No.2008100220
文摘我们在离子陷井系统为一个任意的未知二水平的二离子的状态的确定、多控制的远距传物建议一个简单计划。在计划，当量隧道和需要的单一的转变可以分别地经由一个单个反响的相互作用被完成，特殊纠缠的 W 状态使用了。完成整个过程的要求的时间不与代理人的数字增加。
文摘We propose a scheme to generate various nonclassical vibrational states in the collective motion of twotrapped ions, such as squeezed states, Schrodinger cat states, and SU(2) states. It is based on Raman-type excitations.Two-mode coupling between the center-of-mass and relative vibrational modes can also be realized.
基金Project supported by the National Natural Science Foundation of China （Grant No 10674025）, the Key Laboratory of Quantum Information of University of Science and Technology of China, the National Natural Science Foundation of Fujian Province of China （Grant No 2006J0235）, and Foundation of the Education Department of Fujian Province, China （Grant No JB06033）.
基金supported by the National Natural Science Foundation of China (Grant No 10674025)Funds from Key Laboratory of Quantum Information, University of Science and Technology of Chinathe Department Funds of Fuzhou University of China (Grant No 2007-XY-15)
文摘An alternative scheme to approximately conditionally teleport entangled two-mode cavity state without Bell state measurement in cavity QED is proposed. The scheme is based on the resonant interaction of a ladder-type three-level atom with two bimodal cavities. The entangled cavity state is reconstructed with only one atom interacting with the two cavities successively.
基金Supported by Fok Ying Tung Education Foundation under Grant No 81008, the National Natural Science Foundation of China under Grant No 10225421, and Funds from Fuzhou University.
基金Supported by the National Natural Science Foundation of China under Grant No 10674025, and the Fund from Key Lab of Quantum Information at University of Science and Technology of China, and the Development Funds of Fuzhou University under Grant No 2007-XY-15.
文摘一个计划到电视港口没有在洞证完的钟状态测量的一个原子的三个直角的状态的重叠被建议。计划基于与一个双性人一起的二个 Lambda 类型三水平的原子的反响的相互作用形式的洞。原子的察觉倒塌原子 b 到一个 with 洞模式处于二模式的真空状态离开了的原子的起始的状态。成功的概率和这个计划的忠实分别地是 0.112 和 0.999。
基金The project supported by National Natural Science Foundation of China under Grant No.10674025Funds from Key Laboratory of Quantum Information of University of Science and Technology of China
文摘根据 Agrawal 等的协议，我们为远距传物并且稠密的编码的实现建议一个洞证完计划。而不是使用 EPR 状态和 GHZ 状态，我们的计划对由把一个 W 班状态用作一条量隧道的一个粒子的损失更感觉迟钝。而且，我们的计划对热地有免疫力，并且不要求洞在整个过程留在真空状态。
基金Project supported by the Science Foundation of Educational Committee of Fujian Province （Grant No JB05065）.Acknowledgment The author is grateful to Professor Zheng ShiBiao for his helpful comments.
基金The project supported by National Natural Science Foundation of China under Grant Nos. 10225421 and 10674025
文摘<正> An alternative scheme is proposed to transfer quantum states and prepare a quantum network in cavityQED.It is based on the interaction of a two-mode cavity field with a three-level V-type atom.In the scheme,theatom-cavity field interaction is resonant,thus the time required to complete the quantum state transfer process is greatlyshortened,which is very important in view of decoherence.Moreover,the present scheme does not require one mode ofthe cavities to be initially prepared in one-photon state,thus it is more experimentally feasible than the previous ones.
