Comment on “Approximate and Conditional Teleportation of an Unknown Atomic State Without Bell-State Measurement with Two-Photon Interaction”

在一个以前的工作[Commun。Theor。Phys。45 (2006 ) 79 ] 没有钟状态测量，一个计划在有效 Hamiltonian 途径经由二光子的贾内斯·卡明斯模型在一个证完洞为一个未知原子状态的近似、有条件的远距传物被介绍。这个评价介绍一个其他的方法，基于“所谓的完整的二光子的贾内斯·卡明斯·哈米尔托纳恩途径”。因此，它在洞内为任意的平均光子数字描述二光子的退化过程的进化，作为实现在这种情形的远距传物的正确方法。

A Note on Teleportation of an Arbitrary Two-Particle State Without Bell-State Measurement in Cavity QED

我们在场用四个二水平的原子和一个双性人的一个计划没有使用钟状态测量，得到一个任意的纠缠的原子状态的近似有条件的远距传物的形式的洞。

Quantum communication via controlled holes in the statistical distribution of excitations in a nanoresonator coupled to a Cooper pair box

We propose a scheme to transmit information via the statistical distribution of excitations of a nanomechanical resonator. It employs a controllable coupling between this system and a Cooper pair box. The success probability and the fidelity are calculated and compared with those obtained in an atom-field system in different regimes. Addtionaly, the scheme can also be applied to prepare low excited Fock states.

Total teleportation of zero-and one-photon entangled states in running waves

Inspired by a recent paper [2002 J. Opt. B 4 316] we present an alternative scheme to teleport an entanglement of zero- and one-photon states of a running-wave field. The scheme employs only linear optical elements plus single-photon sources and detectors.

Controlling Excitation Inversion of a Cooper Pair Box Interacting with a Nanomechanical Resonator

We investigate the action of time-dependent detunings upon the excitation inversion of a Cooper pair box interacting with a nanomechanical resonator.The method employs the Jaynes–Cummings model with damping,assuming different decay rates of the Cooper pair box and various fixed and time-dependent detunings.It is shown that,when the presence of damping plus constant detunings destroys the collapse/revival effects,convenient choices of time-dependent detunings allow one to reconstruct such events in a perfect way.It is also shown that the mean excitation of the nanomechanical resonator is more robust against damping of the Cooper pair box for convenient values of time-dependent detunings.

Hole Burning in the Fock Space: from Single to Several Holes

In our previous papers we have studied the production of a single hole in the photon number distribution of a field state [Phys. Lett. A 240 (1998) 277;253 (1999) 123]. In this letter we extend the procedure for the controlled creation of an arbitrary number of holes.