Entanglement in the graph-state formalism
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Inclou dades d'ús des de 2022
Cita com:
hdl:2099.1/8089
Tutor / directorAcín dal Maschio, Antonio
Tipus de documentProjecte Final de Màster Oficial
Data2009-09-09
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
We investigate the decoherence dynamics of a class of multi-particle
entangled states - graph states - when subjected to individual noise processes. Recent
analytical results for Pauli noise channels are summarized here. The power of this
technique is demonstrated by making numerical calculations of entanglement for a
relatively large system, which would be extremely tedious by brute force techniques
alone. The results are numerically extended to linear graph states subjected to the
generalized amplitude damping noise channel, which is an important case of a non-pauli
noise channel. For small system sizes of linear graph states, the exact entanglement
together with the lower and upper bounds are plotted. It is shown that in the limit of
an in¯nite heat bath all these bounds coincide to give the exact entanglement decay.
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Caratula+thesis_Chirag.pdf | 503,4Kb | Visualitza/Obre |