Character of superposed states under deterministic LOCC

Authors:
Amit Bhar;Ajoy Sen;Debasis Sarkar
Affiliations:
Department of Mathematics, Jogesh Chandra Chaudhuri College, Kolkata, India 700033;Department of Applied Mathematics, University of Calcutta, Kolkata, India 700009;Department of Applied Mathematics, University of Calcutta, Kolkata, India 700009
Venue:
Quantum Information Processing
Year:
2013

Citing 3
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Deterministic local conversion of incomparable states by collective LOCC

Quantum Information & Computation

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Abstract

In this paper we investigate the effect of superposition of states on local conversion of pure bipartite states under deterministic LOCC. We are able to form a bridge between comparable and incomparable classes of states through the linear superposition of states. For example, if we consider two pairs of incomparable states, then their superposition may result into a comparable pair of states. We investigate many such cases and provide some of the results in tabular form. We also investigate the entanglement behavior of such classes of states, specifically their monotone nature. Finally we provide some bounds of different measures of entanglement based on the idea of comparability and incomparability under deterministic LOCC.