https://doi.org/10.1140/epjp/s13360-022-03568-9
Regular Article
Effect of magnetic and electric field interaction on non-classical properties of graphene coherent states
1
Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
2
Department of Physics, Technical and Vocational University (TVU), Tehran, Iran
Received:
10
January
2022
Accepted:
4
December
2022
Published online:
19
December
2022
Coherent states may serve as useful and important tools in physics because of their unique properties. Recently, for a graphene layer placed in a perpendicular magnetic field and a crossed electric field, coherent states have been introduced. In this paper, we evaluate the entanglement and some non-classical features such as squeezing and photon statistics properties for coherent states and their superposition; we then investigate how these properties can change by varying the fields. By defining these states as two qubit states and using concurrence, we realize that all states are entangled and by increasing (decreasing) 
, the ratio of electric field to magnetic field increases (decreases) the entanglement of coherent states. Also, states exhibit squeezing with sub-Poissonian statistics in some range of the related parameters. However, for large values of the coherency parameter and , all states represent Poissonian statistics with no squeezing in quadrature operators.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
