Quantum phase diagrams of matter-field Hamiltonians II: Wigner function analysis
Por:
Lopez-Pena, R., Cordero, S., Nahmad-Achar, E., Castanos, O.
Publicada:
1 mar 2021
Resumen:
Non-classical states are of practical interest in quantum computing and
quantum metrology. These states can be detected through their Wigner
function negativity in some regions. We show that the surfaces of
minimum fidelity or maximum Bures distance constitute a signature of
quantum phase transitions. Additionally the behaviour of the Wigner
function associated to the field modes carry the information of both,
the entanglement properties between matter and field sectors, and the
regions of the parameter space where the quantum phase transitions take
place. A finer classification for the continuous phase transitions is
obtained through the computation of the surface of maximum Bures
distance.
Filiaciones:
Lopez-Pena, R.:
(Corresponding Author), Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Apartado Postal 70-543, Mexico City 04510, DF, Mexico
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Apartado Postal 70-543, Mexico City 04510, DF, Mexico
Cordero, S.:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Apartado Postal 70-543, Mexico City 04510, DF, Mexico
Nahmad-Achar, E.:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Apartado Postal 70-543, Mexico City 04510, DF, Mexico
Castanos, O.:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Apartado Postal 70-543, Mexico City 04510, DF, Mexico
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