Quantum probing topological phase transitions by non-Markovianity

Giorgi, Gian Luca; Longhi, Stefano; Cabot, Albert; Zambrini, Roberta
Annalen der Physik 2019, 1900307 (1-12) (2019)

Understanding the physical significance and probing the global invariants characterizing quantum topological phases in extended systems is a main
challenge in modern physics with major impact in different areas of science. Here, a quantum-information-inspired probing method is proposed where
topological phase transitions are revealed by a non-Markovianity quantifier. The idea is illustrated by considering the decoherence dynamics of an external
read-out qubit that probes a Su–Schrieffer–Heeger (SSH) chain with either pure dephasing or dissipative coupling. Qubit decoherence features and
non-Markovianity measure clearly signal the topological phase transition of the SSH chain.


Esta web utiliza cookies para la recolección de datos con un propósito estadístico. Si continúas navegando, significa que aceptas la instalación de las cookies.


Más información De acuerdo