Lasing on the IR transitions in krypton and argon atoms due to excitation of active media with uranium fission fragments

Abstract

A probabilistic teleportation scheme for atomic state via cavity QED [Phys. Rev. A 70 (2004) 054303] is revisited and accordingly some improvements are made.No cloning theorem forbids a perfect copy of an arbitrary unknown quantum state. How to interchange different resources has ever been a question in quantum computation and quantum information. In 1993, Bennett et al . [1] first presented a quantum teleportation scheme. In the scheme, an arbitrary unknown quantum state in a qubit can be teleported to a distant qubit with the help of Einstein-Podolsky-Rosen (EPR) pair. Their work showed in essence the interchangeability of different resources in quantum mechanics. Hence, after Bennett et al .'s pioneering work in 1993, quantum teleportation has attracted much attention. [2−30] As a matter of fact, one can transfer quantum states ont only by the method of teleportation [1] but also by quantum state transfer (QST). [31−35] Recently QST has attracted some attention and interests continuously increase. [31−39] There are various physical systems that can be used for QST, one of them being the atomcavity system. [31−35] In this paper we will revisit a recently proposed probabilistic teleportation scheme for atomic state via cavity QED [22] and improve it.Let us briefly review the probabilistic teleportation scheme of atomic state proposed by Ye and Guo. [22] Assume that the atom 1 is in a state