A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Non-Markovian qubit dynamics induced by Coulomb crystals
Tekijät: Borrelli M, Haikka P, De Chiara G, Maniscalco S
Kustantaja: AMER PHYSICAL SOC
Julkaisuvuosi: 2013
Journal: Physical Review A
Tietokannassa oleva lehden nimi: PHYSICAL REVIEW A
Lehden akronyymi: PHYS REV A
Artikkelin numero: ARTN 010101
Numero sarjassa: 1
Vuosikerta: 88
Numero: 1
Sivujen määrä: 5
ISSN: 1050-2947
DOI: https://doi.org/10.1103/PhysRevA.88.010101
Tiivistelmä
We investigate the backflow of information in a system with a second-order structural phase transition, namely, a quasi-one-dimensional Coulomb crystal. Using standard Ramsey interferometry which couples a target ion (the system) to the rest of the chain (a phononic environment), we study the non-Markovian character of the resulting open system dynamics. We study two different time scales and show that the backflow of information pinpoints both the phase transition and different dynamical features of the chain as it approaches criticality. We also establish an exact link between the backflow of information and the Ramsey fringe visibility.
We investigate the backflow of information in a system with a second-order structural phase transition, namely, a quasi-one-dimensional Coulomb crystal. Using standard Ramsey interferometry which couples a target ion (the system) to the rest of the chain (a phononic environment), we study the non-Markovian character of the resulting open system dynamics. We study two different time scales and show that the backflow of information pinpoints both the phase transition and different dynamical features of the chain as it approaches criticality. We also establish an exact link between the backflow of information and the Ramsey fringe visibility.
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