Quantum properties and dynamics of X states |
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| Authors: | Nicolás Quesada Asma Al-Qasimi Daniel FV James |
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| Affiliation: | 1. Department of Physics , University of Toronto , 60 St. George Street, Toronto , Ontario M5S 1A7 , Canada nquesada@physics.utoronto.ca;3. Department of Physics , University of Toronto , 60 St. George Street, Toronto , Ontario M5S 1A7 , Canada |
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| Abstract: | X states are a broad class of two-qubit density matrices that generalize many states of interest in the literature. In this work, we give a comprehensive account of various quantum properties of these states, such as entanglement, negativity, quantum discord and other related quantities. Moreover, we discuss the transformations that preserve their structure both in terms of continuous time evolution and discrete quantum processes. |
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| Keywords: | X states quantum correlations quantum dynamics |
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