nt - p h / 03 11 13 7 v 1 2 0 N ov 2 00 3 Preparation of W , GHZ , and two - qutrit states using bimodal cavities
نویسنده
چکیده
We show how one can prepare three-qubit entangled states like W-states, Greenberger-Horne-Zeilinger states as well as two-qutrit entangled states using the multiatom two-mode entanglement. We propose a technique of preparing such a multi-particle entanglement using stimulated Raman adiabatic passage. We consider a collection of three-level atoms in Λ configuration simultaneously interacting with a resonant two-mode cavity for this purpose. Our approach permits a variety of multiparticle extensions.
منابع مشابه
ar X iv : q ua nt - p h / 06 11 18 4 v 1 1 7 N ov 2 00 6 Comment on ’ Teleportation of two quNit entanglement : Exploiting local resources ’
Recently, in Ref.[1] N. Ba An proposed a teleportation protocol, in which the new interesting idea of exploiting local resources to do teleportation [2] is generalized to the case of arbitrary quNits. After carefully rededucting the formulae in Ref.[1], however, we find some of them are wrong. As a consequence, the unitary operations which need to be performed to reconstruct the unknown biparti...
متن کاملua nt - p h / 00 11 09 6 v 1 2 3 N ov 2 00 0 su ( 2 ) and su ( 1 , 1 ) displaced number states and their nonclassical properties
We study su(2) and su(1,1) displaced number states. Those states are eigenstates of density-dependent interaction systems of quantized radiation field with classical current. Those states are intermediate states interpolating between number and displaced number states. Their photon number distribution, statistical and squeezing properties are studied in detail. It is show that these states exhi...
متن کاملua nt - p h / 05 11 13 0 v 1 1 4 N ov 2 00 5 Quantum key distribution without alternative measurements and rotations ⋆
A quantum key distribution protocol based on entanglement swapping is proposed. Through choosing particles by twos from the sequence and performing Bell measurements, two communicators can detect eavesdropping and obtain the secure key. Because the two particles measured together are selected out randomly, we need neither alternative measurements nor rotations of the Bell states to obtain secur...
متن کاملnt - p h / 02 03 02 8 v 1 6 M ar 2 00 2 Can the states of the W - class be suitable for teleportation
Entangled states of the W-class are considered as a quantum channel for teleportation or the states to be sent. The protocols have been found by unitary transformations of the schemes, based on the multiuser GHZ channel. The main feature of the W-quantum channels is a set of non-local operators, that allow receivers recovering unknown state.
متن کاملar X iv : q ua nt - p h / 06 11 18 7 v 1 1 7 N ov 2 00 6 Philosophical Aspects of Quantum Information Theory
2 First steps with quantum information 3 2.1 Bits and qubits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 The no-cloning theorem . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Quantum cryptography . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3.1 Key Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4 Entanglement-as...
متن کامل