Creating and destroying coherence with quantum channels

نویسندگان

چکیده

The emerging quantum technologies rely on our ability to establish and control systems in nonclassical states, exhibiting entanglement coherence. It is thus crucial understand how coherence can be created the most efficient way. In this work we study optimal ways create a large amount of via channels. For this, compare different scenarios, where channel acting an incoherent state, states which have coherence, also subsystems multipartite states. We show that correlations do not enhance channels destroy proving more when subsystem bipartite state. Crucially, destroyed system exceed upper bound those single total state entangled. Our results significantly simplify evaluation generating capacity channels, discuss.

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ژورنال

عنوان ژورنال: Physical review

سال: 2022

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physreva.105.l060401