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Chinese Physics Letters 2001年第8期18卷 1072-1073页

作者： zheng shi-biao Department of Electronic Science and Applied Physics Fuzhou UniversityFuzhou 350002

A scheme is proposed for generating the superpositions of several coherent states in a cavity field with dispersive cavity quantum electrodynamics(QED).In the scheme,a sequence of atoms interact dispersively with the cavity field,connected with a microwave source,and is manipulated by classical fields,followed by state-selective *** this way,the cavity field is collapsed onto a superposition of several coherent states along a straight line with controllable *** scheme provides the possibility for quantum state engineering via coherent-state superpositions in cavity QED for the first time.

关键词： superposition coherent scheme

Teleportation of a Superposition of Three Orthogonal States of an Atom via Photon Interference

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Communications in Theoretical Physics 2006年第4X期46卷 613-616页

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

We propose a scheme to teleport a superposition of three states of an atom trapped in a cavity to a second atom trapped in a remote cavity. The scheme is based on the detection of photons leaking from the cavities aft... 详细信息

关键词： teleportation superposition photon interference

Efficient Scheme for Dense Coding in Cavity QED and Ion Trap Systems

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Communications in Theoretical Physics 2006年第6期45卷 1011-1012页

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

We propose a scheme for realizing dense coding in cavity QED. The scheme is based on the resonant interaction of two atoms with a cavity mode. The scheme may be realizable with presently available techniques in the mi... 详细信息

关键词： dense coding cavity QED ion trap

Generation of SU(2)Coherent States for a Cavity Mode and a Collective Atomic Mode

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Communications in Theoretical Physics 2009年第5期51卷 828-830页

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

We propose a scheme for generation of SU（2） coherent states for an atomic ensemble and a cavity mode. In the scheme a collection of two-level atoms resonantly interact with a single-mode quantized field. Under certain conditions, the system can evolve from a Fock state to a highly entangled SU（2） coherent state. The operation speed increases as the number of atoms increases, which is important in view of deeoherence.

关键词： SU(2) coherent state cavity mode collective atomic mode

Realization of Nonclassical States and Two-Mode Coupling in the Motion of Two Trapped Ions

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Communications in Theoretical Physics 2002年第8期38卷 213-216页

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

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 ***-mod... 详细信息

关键词： nonclassical state, two-mode coupling, trapped ion

Robust Scheme for Long-Distance Teleportation of an Unknown Atomic State

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Communications in Theoretical Physics 2006年第3期45卷 429-432页

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

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.

关键词： teleportation atomic state Raman coupling

Scheme for Entangling Two Distant Cavity Mirrors

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Communications in Theoretical Physics 2008年第4期49卷 925-927页

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

A scheme is presented for the generation of entangled states for two cavity mirrors. In the scheme each mirror initially in a vacuum state interacts with a weak coherent field, resulting in a photon-number dependent k... 详细信息

关键词： entangled state cavity mirror coherent field

Engineering Multi-atom Entangled States via Cavity Decay

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Communications in Theoretical Physics 2007年第4期47卷 719-721页

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

A scheme is proposed for the generation of entangled states for multiple atoms trapped in a cavity by detecting photon decay. The scheme is valid no matter when the effective atom-cavity coupling strength is larger than the cavity decay rate or not, which is of importance in view of experiment. The fidelity of entanglement is insensitive to the inefticiency of the photo-detector. The scheme does not require a photon to be initially injected into the cavity.

关键词： entangled state photon cavity decay

Production of Entanglement of Multiple Three-Level Atoms with a Two-Mode Cavity

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Communications in Theoretical Physics 2006年第3期45卷 539-541页

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

A scheme is proposed for generating maximally entangled states for two or more three-level atoms. In the scheme the atoms are sent through a two-mode cavity one by one and interact with the two-cavity modes sequentially. The required experimental techniques are within the scope of what can be obtained in the microwave cavity QED setup.

关键词： entanglement three-level atoms two-mode cavity

Quantum Discrete Fourier Transform in an Ion Trap System

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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