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Teleportation of atomic states with a weak coherent cavity field 被引量:4
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作者 郑仕标 《Chinese Physics B》 SCIE EI CAS CSCD 2005年第9期1825-1827,共3页
A scheme is proposed for the teleportation of an unknown atomic state. The scheme is based on the resonant interaction of atoms with a coherent cavity field. The mean photon-number of the cavity field is much smaller ... A scheme is proposed for the teleportation of an unknown atomic state. The scheme is based on the resonant interaction of atoms with a coherent cavity field. The mean photon-number of the cavity field is much smaller than one and thus the cavity decay can be effectively suppressed. Another advantage of the scheme is that only one cavity is required. 展开更多
关键词 TELEPORTATION atomic state coherent cavity field
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Preparation of Entangled Atomic States Through Resonant Atom-Field Interaction 被引量:2
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作者 CHEN Mei-Feng 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第2期347-349,共3页
A scheme is proposed for the generation of two-atom maximally entangled states and multi-atom maximally entangled states of W class. The scheme is based on the simultaneous resonant interaction of atoms with a single-... A scheme is proposed for the generation of two-atom maximally entangled states and multi-atom maximally entangled states of W class. The scheme is based on the simultaneous resonant interaction of atoms with a single-mode cavity field. It does not require accurate adjustment of the interaction time. The time needed to complete the generation does not increase with the number of the atom. 展开更多
关键词 resonant interaction two-atom entangled state atomic W state
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Scheme for Teleportation of Unknown Entangled Atomic States via Cavity Decay 被引量:1
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作者 ZHANG Li-Hua XUE Zheng-Yuan +1 位作者 YANG Ming CAO Zhuo-Liang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第4X期610-612,共3页
We present a physical scheme to teleport an unknown atomic entangled state via cavity decay. In the teleportation process, four-particle Greenberger-Horne-Zeilinger (GHZ) state is used as quantum channel, and two un... We present a physical scheme to teleport an unknown atomic entangled state via cavity decay. In the teleportation process, four-particle Greenberger-Horne-Zeilinger (GHZ) state is used as quantum channel, and two unknown entangled atoms and two of four atoms in the four-particle GHZ state are trapped in four leaky cavities, respectively. Based on the joint detection of the photons leak out from the four cavities, we can teleport an unknown entangled state to two other remote atoms with certain probability and high fidelity. 展开更多
关键词 TELEPORTATION atomic entangled state cavity decay
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Scheme for Teleportation of Four-Level Atomic States in Thermal Cavities
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作者 WANG Xin-Wen LIU Xiang FANG Mao-Fa 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第6期1033-1036,共4页
We propose a scheme for teleportation of four-level atomic states in thermal cavities. The scheme does not involve the generalized Bell-state or generalized GHZ-state measurement, which is difficult in practice. Anoth... We propose a scheme for teleportation of four-level atomic states in thermal cavities. The scheme does not involve the generalized Bell-state or generalized GHZ-state measurement, which is difficult in practice. Another feature of the scheme is that it does not require individual addressing of atoms in cavity and is insensitive to both cavity decay and thermal field, which is of importance in point of experiment. 展开更多
关键词 four-level atomic state multi-atom four-level entangled state TELEPORTATION single-atom measurement
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ATOMIC STATES AND BRITTLENESS OF hcp Ti_3Al-ORDERED-TYPE ALLOYS
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作者 H.J. Peng Y.Q. Xie 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2007年第4期270-276,共7页
On the basis of the framework of systematic science of alloys (SSA), the basic information such as states, volumes, and potential energies of characteristic atoms in hcp Ti-Al system have been determined. The averag... On the basis of the framework of systematic science of alloys (SSA), the basic information such as states, volumes, and potential energies of characteristic atoms in hcp Ti-Al system have been determined. The average atomic state of the hcp Ti3Al compound consisting of ψ4^Ti and ψ0^Al atoms is 0.75[Ar] (3dn)^0.573 (3dc)^2.1685 (4sc)^0.972 (4sf)^0.3093 + 0.25[Ne] (3sc)^1.32 (3pc)^1.19 (3sf + 3pf)^0.49. The brittleness of the ordered hcp Ti3Al compound has been discussed considering the fundamental factors, which are atomic states, bond networks, potential energy wave planes, and the ratio xTi/xAl. The existence of more pc and more dc directional electrons in the hcp Ti3Al compound lead to considerable brittleness; From bond networks and potential energy wave planes, the hcp Ti3Al compound has poorer ductility than the pure hcp Ti metal and the pure fcc Al metal; The Al-rich hcp Ti3Al ordered type alloys have poorer ductility than the Ti-rich hcp Ti3Al ordered type alloys. 展开更多
关键词 Ti3Al alloy atomic state BRITTLENESS
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Preparation and control of atomic optimal entropy squeezing states for a moving two-level atom under control of the two-mode squeezing vacuum fields 被引量:2
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作者 周并举 刘一曼 +1 位作者 赵明卓 刘小娟 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第12期278-284,共7页
From the viewpoint of quantum information, this paper studies preparation and control of atomic optimal entropy squeezing states (AOESS) for a moving two-level atom under control of the two-mode squeezing vacuum fie... From the viewpoint of quantum information, this paper studies preparation and control of atomic optimal entropy squeezing states (AOESS) for a moving two-level atom under control of the two-mode squeezing vacuum fields. Necessary conditions of preparation of the AOESS are analysed, and numerical verification of the AOESS is finished. It shows that the AOESS can be prepared by controlling the time of the atom interaction with the field, cutting the entanglement between the atom and field, and adjusting squeezing factor of the field. An atomic optimal entropy squeezing sudden generation in different components can alternately be realized by controlling the field-mode structure parameter. 展开更多
关键词 atomic optimal entropy squeezing state squeezing factor of the field the field-mode structure parameter
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Scheme for Implementation of Optimal Cloning of Arbitrary Single Particle Atomic State into Two Photonic States
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作者 SONG Wei QIN Tao 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第6期1515-1518,共4页
We present a feasible scheme to implement the 1→2 optimal cloning of arbitrary single particle atomic state into two photonic states, which is important for applications in long distance quantum communication. Our sc... We present a feasible scheme to implement the 1→2 optimal cloning of arbitrary single particle atomic state into two photonic states, which is important for applications in long distance quantum communication. Our scheme also realizes the tele-NOT gate of one atom to the distant atom trapped in another cavity. The scheme is based on the adiabatic passage and the polarization measurement. It is robust against a number of practical noises such as the violation of the Lamb Dicke condition, spontaneous emission, and detection inefficiency. 展开更多
关键词 optimal cloning atomic state photonic state
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Teleportation of Unknown Atomic Entangled States Using GHZ Class States
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作者 ZHAO Yan 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第3期639-642,共4页
We propose two physical schemes, which can teleport unknown atomic entangled states from user A (Alice) to user B (Bob) via GHZ class states as quantum channel The two schemes are both based on cavity QED techniqu... We propose two physical schemes, which can teleport unknown atomic entangled states from user A (Alice) to user B (Bob) via GHZ class states as quantum channel The two schemes are both based on cavity QED techniques. In the two schemes, teleportation and distillation procedures can be realized simultaneously. The second teleportation scheme is more advantageous than the first one. 展开更多
关键词 TELEPORTATION unknown atomic entangled states cavity QED technique GHZ class state detuned interaction strong classical driving field
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Nonclassicality of photon-modulated atomic coherent states in the Schwinger bosonic realization
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作者 Jisuo Wang Xiangguo Meng Xiaoyan Zhang 《Chinese Physics B》 SCIE EI CAS CSCD 2020年第12期307-312,共6页
We theoretically introduce two new photon-modulated atomic coherent states(ACSs)via using the Schwinger bosonic representation of the angular momentum operators(the sequential operations J±n)on an ACS,and investi... We theoretically introduce two new photon-modulated atomic coherent states(ACSs)via using the Schwinger bosonic representation of the angular momentum operators(the sequential operations J±n)on an ACS,and investigate their nonclassicality using the Wigner distribution,photon number distribution,and entanglement entropy.It is found that photonmodulated ACSs possess more stronger nonclassicality than the original ACS in certain regions ofτ,the nonclassicality enhances with increasing number n of the operations J±and the operation J+(-)n enhances the entanglement in the region of small(large)τ. 展开更多
关键词 photon-modulated atomic coherent state NONCLASSICALITY Wigner distribution entanglement
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Teleportation of Unknown Superpositions of Collective Atomic Coherent States
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作者 ZHENGShi-Biao 《Communications in Theoretical Physics》 SCIE CAS CSCD 2001年第6期665-668,共4页
We propose a scheme to teleport an unknown superposition of two atomic coherent states with different phases. Our scheme is based on resonant and dispersive atom-field interaction. Our scheme provides a possibility of... We propose a scheme to teleport an unknown superposition of two atomic coherent states with different phases. Our scheme is based on resonant and dispersive atom-field interaction. Our scheme provides a possibility of teleporting macroscopic superposition states of many atoms first time. 展开更多
关键词 TELEPORTATION SUPERPOSITION atomic coherent state
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Atomic coherent states as energy eigenstates of a Hamiltonian describing a two-dimensional anisotropic harmonic potential in a uniform magnetic field
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作者 孟祥国 王继锁 梁宝龙 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第12期269-273,共5页
In this paper we find that a set of energy eigenstates of a two-dimensional anisotropic harmonic potential in a uniform magnetic field is classified as the atomic coherent states |τ) in terms of the spin values of ... In this paper we find that a set of energy eigenstates of a two-dimensional anisotropic harmonic potential in a uniform magnetic field is classified as the atomic coherent states |τ) in terms of the spin values of j in the Schwinger bosonic realization. The correctness of the above conclusions can be verified by virtue of the entangled state 〈η| representation of the state |τ). 展开更多
关键词 two-dimensional anisotropic harmonic oscillator uniform magnetic field atomic coherent state entangled state representation
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Generation of four-atom cluster states in thermal cavity and implementing remote controlled not gate 被引量:2
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作者 杨榕灿 李洪才 +1 位作者 陈美香 林秀 《Chinese Physics B》 SCIE EI CAS CSCD 2006年第10期2315-2319,共5页
We propose an experimentally feasible scheme for preparing a four-atom cluster state in a thermal cavity. In the scheme, the cavity field is only virtually excited and the photon-number-dependent part in the effective... We propose an experimentally feasible scheme for preparing a four-atom cluster state in a thermal cavity. In the scheme, the cavity field is only virtually excited and the photon-number-dependent part in the effective Hamiltonian is cancelled so that the system is insensitive to the cavity decay and the thermal field. At the same time, the scheme can be generalized to prepare n-atom cluster states with the success probability 100%. In addition, using the four-atom cluster state, we also propose a simpler scheme for implementing a remote-controlled not gate (CNOT) without the Bell states measurement. 展开更多
关键词 atomic cluster states two-level atom thermal cavity remote CNOT gate
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Analytic variationally optimized internally orthogonalized modified Laguerre orbitals in accurate atomic configuration interaction calculation 被引量:2
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作者 熊庄 Bacalis N C 《Chinese Physics B》 SCIE EI CAS CSCD 2006年第5期992-997,共6页
An analytic configuration interaction method based on variationally optimized internally orthogonalized modified Laguerre orbitals is presented. We have developed the corresponding computer code. For application, we s... An analytic configuration interaction method based on variationally optimized internally orthogonalized modified Laguerre orbitals is presented. We have developed the corresponding computer code. For application, we study the 1s2s ^1S isoelectronic sequence from helium to neon, and compare with other methods. By taking into account the Eekart upper-bound theorem, we obtained more accurate and more intuitively understandable results than Hartree-Fock and multi-configuration Hartree-Fock reported results. 展开更多
关键词 atomic excited states analytic basis function configuration interaction variational computation
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Teleportation of Entangled States through Divorce of Entangled Pair Mediated by a Weak Coherent Field in a High-Q Cavity 被引量:1
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作者 W. B. Cardoso N. G. de Almeida 《Chinese Physics Letters》 SCIE CAS CSCD 2008年第7期2488-2491,共4页
We propose a scheme to partially teleport an unknown entangled atomic state. A high-Q cavity, supporting one mode of a weak coherent state, is needed to accomplish this process. By partial teleportation we mean that t... We propose a scheme to partially teleport an unknown entangled atomic state. A high-Q cavity, supporting one mode of a weak coherent state, is needed to accomplish this process. By partial teleportation we mean that teleportation will occur by changing one of the partners of the entangled state to be teleported. The entangled state to be teleported is composed by one pair of particles, we called this surprising characteristic of maintaining the entanglement, even when one of the particle of the entangled pair being teleported is changed, of divorce of entangled states. 展开更多
关键词 UNKNOWN atomic STATE DETERMINISTIC QUANTUM TELEPORTATION PODOLSKY-ROSEN CHANNELS SCHEME SUPERPOSITION OPERATIONS LIGHT
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Scheme for Realizing Probabilistic Teleportation of Bipartite Atomic State via Cavity QED 被引量:1
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作者 DONG Ping YANG Ming CAO Zhuo-Liang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第4期621-624,共4页
We present a physical scheme for realizing probabilistic teleportation of bipartite atomic states via cavity QED. This scheme requires only a nonmaximally entangled pair used as quantum channel, so we reduce the requi... We present a physical scheme for realizing probabilistic teleportation of bipartite atomic states via cavity QED. This scheme requires only a nonmaximally entangled pair used as quantum channel, so we reduce the requirement of entanglement. 展开更多
关键词 bipartite atomic state TELEPORTATION nonmaximally entangled state cavity QED
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Robust Scheme for Long-Distance Teleportation of an Unknown Atomic State
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作者 ZHENG Shi-Biao 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第3期429-432,共4页
A scheme is presented for the long-distance teleportation of an unknown atomic state between two separated cavities. The scheme is based on the Raman coupling and cavity decay. In the scheme, the effective atom-cavity... A scheme is presented for the long-distance teleportation of an unknown atomic state between two separated cavities. The scheme is based on the Raman coupling and cavity decay. In the scheme, the effective atom-cavity coupling strength is much smaller than the cavity decay rate and thus cavities of high quality factor are unnecesssary. 展开更多
关键词 TELEPORTATION atomic state Raman coupling
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Atomic Coherent State,Entangled State and Phase Operator for Studying Interference Between Two Bose-Einstein Condensates
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作者 TANG Xu-Bing FAN Hong-Yi 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第11期1145-1150,共6页
For studying the interference between two Bose-Einstein condensates we introduce the atomic coherentstate(ACS)in the Schwinger bosonic realization along with the phase operator to directly calculate the interferencepa... For studying the interference between two Bose-Einstein condensates we introduce the atomic coherentstate(ACS)in the Schwinger bosonic realization along with the phase operator to directly calculate the interferencepattern with steady relative phase cos φ.Eigenstates of the density operator of condensates are classified as A CS is alsodemonstrated.The entangled state representation is used in some calculations. 展开更多
关键词 Bose-Einstein condensate atomic coherent state entangled state phase operator
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Revisiting Probabilistic Teleportation Scheme for Atomic State via Cavity QED
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作者 HAN Lian-Fang FANG Ming SHI Shou-Hua ZHANG Zhan-Jun 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第2X期217-220,共4页
A probabilistic teleportation scheme for atomic stats via cavity QED [Phys. Rev. A 70 (2004) 054303] is revisited and accordingly some improvements are made.
关键词 probabilistic teleportation cavity QED atomic state
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Wave function for the squeezed atomic coherent state in entangled state representation and some of its applications
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作者 王继锁 孟祥国 梁宝龙 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第1期326-331,共6页
Based on the Einstein, Podolsky, and Rosen (EPR) entangled state representation, this paper introduces the wave function for the squeezed atomic coherent state (SACS), which turns out to be just proportional to a ... Based on the Einstein, Podolsky, and Rosen (EPR) entangled state representation, this paper introduces the wave function for the squeezed atomic coherent state (SACS), which turns out to be just proportional to a single-variable ordinary Hermite polynomial of order 2j. As important applications of the wave function, the Wigner function of the SACS and its marginal distribution are obtained and the eigenproblems of some Hamiltonians for the generalized angular momentum system are solved. 展开更多
关键词 squeezed atomic coherent state entangled state representation Wigner function eigen- value and eigenstate
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Dynamic stabilization of atomic ionization in a high-frequency laser field with different initial angular momenta
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作者 Di-Yu Zhang Yue Qiao +4 位作者 Wen-Di Lan Jun Wang Fu-Ming Guo Yu-Jun Yang Da-Jun Ding 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第10期82-87,共6页
We investigated the ionization of an atom with different orbital angular momenta in a high-frequency laser field by solving the time-dependent Schr¨odinger equation.The results showed that the ionization stabiliz... We investigated the ionization of an atom with different orbital angular momenta in a high-frequency laser field by solving the time-dependent Schr¨odinger equation.The results showed that the ionization stabilization features changed with the relative direction between the angular momentum of the initial state and the vector field of the laser pulse.The ionization mechanism of the atom irradiated by a high frequency was explained by calculating the transition matrix and evolution of the time-dependent wave packet.This study can provide comprehensive understanding to improve atomic nonadiabatic ionization. 展开更多
关键词 stabilization of atomic ionization atomic initial states
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