scholarly journals Multipartite entanglement of three trapped ions in a cavity and W-state generation

2008 ◽  
Vol 41 (16) ◽  
pp. 165503 ◽  
Author(s):  
S Shelly Sharma ◽  
Eduardo de Almeida ◽  
Naresh K Sharma
2014 ◽  
Vol 310 ◽  
pp. 166-172 ◽  
Author(s):  
Xin Tong ◽  
Chuan Wang ◽  
Cong Cao ◽  
Ling-yan He ◽  
Ru Zhang

2014 ◽  
Vol 21 (04) ◽  
pp. 1450008 ◽  
Author(s):  
Mazhar Ali

We study the dynamics of genuine multipartite entanglement under non-Markovian noise. Using a computable entanglement monotone for multipartite systems, we investigate a system of three qubits each of which is individually exposed to classical Ornstein–Uhlenbeck noise. We found that the W state mixed with the maximally mixed state is the most fragile state, whereas a similar mixture of GHZ state exhibits robust behaviour. We compare dynamics of these states with dynamics of similar mixtures of random states and weighted graph states. We also discuss the limiting cases.


2015 ◽  
Vol 14 (8) ◽  
pp. 2847-2860 ◽  
Author(s):  
Jie-Ru Hu ◽  
Qing Lin

Author(s):  
Mrittunjoy Guha Majumdar

Multipartite entanglement is a resource for application in disparate protocols, of computing, communication and cryptography. Nested entanglement provides resource-states for quantum information processing. In this paper, Matryoshka quantum resource-states, which contain nested entanglement patterns, has been studied. A novel scheme for the generation of such quantum states has been proposed using an anisotropic XY spin-spin interaction-based model. The application of the Matryoshka GHZ-Bell states for n-qubit teleportation is reviewed and an extension to more general Matryoshka ExhS-Bell states is posited. An example of Matryoshka ExhS-Bell states is given in the form of the genuinely entangled seven-qubit Xin-Wei Zha state. Generation, characterisation and application of this seven-qubit resource state in theoretical schemes for quantum teleportation of arbitrary one, two and three qubits states, bidirectional teleportation of arbitrary two qubit states and probabilistic circular controlled teleportation are presented.


2007 ◽  
Author(s):  
S. Shelly Sharma ◽  
Eduardo de Almeida ◽  
Naresh K. Sharma

2021 ◽  
Vol 127 (4) ◽  
Author(s):  
Jie Peng ◽  
Juncong Zheng ◽  
Jing Yu ◽  
Pinghua Tang ◽  
G. Alvarado Barrios ◽  
...  
Keyword(s):  
W State ◽  

2005 ◽  
Vol 03 (supp01) ◽  
pp. 111-122
Author(s):  
C.-M. LI ◽  
Y.-N. CHEN ◽  
C.-W. LUO ◽  
J.-Y. HSIEH ◽  
D.-S. CHUU

A scheme of three-particle entanglement purification is presented in this work. The physical system undertaken for investigation is dot-like single quantum well excitons independently coupled through a single microcavity mode. The theoretical framework for the proposed scheme is based on the quantum jump approach for analyzing the progress of the trible-exciton entanglement as a series of conditional measurement has been taken on the cavity field state. We first investigate how cavity photon affects the purity of the double-exciton state and the purification efficiency in two-particle protocol. Then we extend the two-particle case and conclude that the three-exciton state can be purified into W state, which involves the one-photon-trapping phenomenon, with a high yield. Finally, an achievable setup for purification using only modest and presently feasible technologies is also proposed.


2017 ◽  
Vol 2 (1) ◽  
pp. 015011 ◽  
Author(s):  
A Máttar ◽  
P Skrzypczyk ◽  
G H Aguilar ◽  
R V Nery ◽  
P H Souto Ribeiro ◽  
...  

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