Transferring of a Two-Mode Entangled State Between Two Cavities via Cavity QED

我们为零的一件二模式的纠纷转建议一个计划 -- 纠缠的 orone 光子在二之间声明经由原子洞的洞回答反响的相互作用。在我们的建议，以便转移纠缠的状态，我们仅仅为收到电视需要二个相同二水平的原子和 atwo 模式洞移植状态。这个计划不要求 Bell-statemeasurement 并且执行任何转变重建起始的状态。并且转移能以一种简单方式与 100% 成功概率发生。并且为在洞之间州的纠缠的 atwo 模式转的一个网络被建议。这个计划能也被扩大转移洞州的纠缠的 N 模式。

Teleportation of a two-atom entangled state using a single EPR pair in cavity QED

We propose a scheme for teleporting a two-atom entangled state in cavity quantum electrodynamics （QED）, In the scheme, we choose a single Einstein Podolsky Rosen （EPR） pair as the quantmn channel which is shared by the sender and the receiver. By using the atom cavity-field interaction and introducing an additional atom, we can teleport the two-atom entangled state successfully with a probability of 1.0. Moreover, we show that the scheme is insensitive to cavity decay and thermal field.

Probabilistic teleportation of an unknown N-atom state using a two-atom nonmaximally entangled state in cavity QED

We present a scheme for realizing probabilistic teleportation of an unknown N-atom state via cavity QED. This scheme requires only a nonmaximally entangled pair to be used as a quantum channel, so the requirement of entanglement is reduced. In addition, our scheme does not involve the Bell-state measurement and is insensitive to the cavity decay, which is important from the experimental point of view. If the quantum channel is a two-atom maximally entangled state, teleportation of an unknown N-atom state can be realized by a simpler scheme via cavity QED.

An Alternative Scheme for Transferring Quantum States and Preparing a Quantum Network in Cavity QED

<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.

Transferring Multi-Dimensional Quantum States and Preparing Quantum Networks in Cavity QED

fn this paper we propose a scheme for transferring quantum states and preparing quantum networks.Compared with the previous schemes,this scheme is more efficient,since three or four-dimensional quantum states canbe transferred with a single step and information interchange of three-dimensional quantum states can be realized,whichis a significant improvement,ft is based on the resonant interaction of a three-mode cavity Geld with an atom.As aconsequence,the interaction time is shortened greatly.Furthermore,we give some discussions about the feasibility ofthe scheme.

Scheme for realizing assisted cloning of an unknown two-atom entangled state via cavity QED

This paper proposes a scheme where one can realize quantum cloning of an unknown two-atom entangled state with assistance of a state preparer in cavity QED. The first stage of the scheme requires usual teleportation. In the second stage of the scheme, with the assistance of the preparer, the perfect copies of an unknown atomic entangled state can be produced.

Efficient scheme for entangled states and quantum information transfer with trapped atoms in a resonator

A protocol is proposed to generate atomic entangled states and implement quantum information transfer in a cavity quantum electrodynamics system. It utilizes Raman transitions or stimulated Raman adiabatic passages between two systems to entangle the ground states of two three-state A-type atoms trapped in a single mode cavity. It does not need the measurements on cavity field nor atomic detection and can be implemented in a deterministic fashion. Since the present protocol is insensitive to both cavity decay and atomic spontaneous emission, it may have some interesting applications in quantum information processing.

Teleportation of two-atom entangled state in resonant cavity quantum electrodynamics

An alternative scheme is presented for teleportation of a two-atom entangled state in cavity quantum electrodynamics （QED）. It is based on the resonant atom-cavity field interaction. In the scheme, only one cavity is involved, and the number of the atoms needed to be detected is decreased compared with the previous scheme. Since the resonant atom-cavity field interaction greatly reduces the interaction time, the decoherence effect can be effectively suppressed during the teleportation process. The experimental feasibility of the scheme is discussed. The scheme can easily be generalized to the teleportation of N-atom Greeninger-Horne-Zeilinger （GHZ） entangled states. The number of atoms needed to be detected does not increase as the number of the atoms in the GHZ state increases.

A scheme for transferring an unknown atomic entangled state via cavity quantum electrodynamics

In this paper, we propose a scheme for transferring an unknown atomic entangled state via cavity quantum electrodynamics （QED）. This scheme, which has a successful probability of 100 percent, does not require Bell-state measurement and performing any operations to reconstruct an initial state. Meanwhile, the scheme only involves atomfield interaction with a large detuning and does not require the transfer of quantum information between the atoms and cavity. Thus the scheme is insensitive to the cavity field states and cavity decay. This scheme can also be extended to transfer ring an entangled state of n-atom.

Transferring a Multi-atom Entangled State via Adiabatic Passage

我们在场为经由断热的经过转移原子纠缠的状态的一个计划。在计划，我们使用光子在空间地远的原子之中完成有效的量传播。成功的转量状态的概率接近 1。同时，计划对原子自发的排放的效果是柔韧的。

State transfer and entanglement between two-and four-level atoms in a cavity

Qudits with a large Hilbert space to host quantum information are widely utilized in various applications, such as quantum simulation and quantum computation, but the manipulation and scalability of qudits still face challenges. Here, we propose a scheme to directly and locally transfer quantum information from multiple atomic qubits to a single qudit and vice versa in an optical cavity. With the qubit–qudit interaction induced by the cavity, our scheme can transfer quantum states efficiently and measurement-independently. In addition, this scheme can robustly generate a high-dimensional maximal entangled state with asymmetric particle numbers, showing its potential in realizing an entanglement channel. Such an information interface for qubits and qudit may have enlightening significance for future research on quantum systems in hybrid dimensions.

Teleportation of atomic entangled states with a thermal cavity

We propose a most simple and experimentally feasible scheme for teleporting unknown atomic entangled states in driven cavity quantum electrodynamics （QED）. In our scheme, the joint Bell-state measurement （BSM） is not required, and the successful probability can reach 1.0. Furthermore, the scheme is insensitive to the cavity decay and the thermal field.

A novel scheme of hybrid entanglement swapping and teleportation using cavity QED in the small and large detuning regimes and quasi-Bell state measurement method

We outline a scheme for entanglement swapping based on cavity QED as well as quasi-Bell state measurement(quasiBSM) methods. The atom–field interaction in the cavity QED method is performed in small and large detuning regimes.We assume two atoms are initially entangled together and, distinctly two cavities are prepared in an entangled coherent–coherent state. In this scheme, we want to transform entanglement to the atom-field system. It is observed that, the fidelities of the swapped entangled state in the quasi-BSM method can be compatible with those obtained in the small and large detuning regimes in the cavity QED method(the condition of this compatibility will be discussed). In addition, in the large detuning regime, the swapped entangled state is obtained by detecting and quasi-BSM approaches. In the continuation,by making use of the atom–field entangled state obtained in both approaches in a large detuning regime, we show that the atomic as well as field states teleportation with complete fidelity can be achieved.

Scheme for generating a cluster-type entangled squeezed vacuum state via cavity QED

A scheme is proposed to generate an N-qubit cluster-type entangled squeezed vacuum state （CTESVS） based on the two-photon interaction between a two-level atomand the cavity fields with the cavity QED system. The CTESVS in N separate cavities can be effectively obtained after performing a simple one-qubit measurement on the atom. The influence of cavity decay on the CTESVS is also discussed.

Probabilistic Teleportation of an Arbitrary Two-Atom State in Cavity QED

我们由在洞证完把二个二原子的 Ronmaximally 纠缠的状态用作量隧道为一个任意的二原子的状态的远距传物建议一个计划。显示出的 Itis 不管是移植的电视的任意的二原子的纯状态是否被纠缠，我们的远距传物计划能总是是概率的认识到的联盟者。远距传物的成功概率被二开始纠缠的原子对的更小的系数决定。

Scheme for Realizing Probabilistic Teleportation of Bipartite Atomic State via Cavity QED

<正> We present a physical scheme for realizing probabilistic teleportation of bipartite atomic states via cavityQED.This scheme requires only a nonmaximally entangled pair used as quantum channel,so we reduce the requirementof entanglement.