Journal
QUANTUM INFORMATION PROCESSING
Volume 16, Issue 11, Pages -Publisher
SPRINGER
DOI: 10.1007/s11128-017-1717-5
Keywords
Quantum steering; Bose-Hubbard model; Quantum entanglement; Nonlinear oscillator; Concurrence; Three-qubit system
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We consider the possibility of generation steerable states in Bose-Hubbard system composed of three interacting wells in the form of a triangle. We show that although our system still fulfills the monogamy relations, the presence of additional coupling which transforms a chain of wells onto triangle gives a variety of new possibilities for the generation of steerable quantum states. Deriving analytical formulas for the parameters describing steering and bipartite entanglement, we show that interplay between two couplings influences quantum correlations of various types. We compare the time evolution of steering parameters to those describing bipartite entanglement and find the relations between the appearance of maximal entanglement and disappearance of steering effect.
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