4 papers
Global sensing and its impact for quantum many-body probes with criticality
Victor Montenegro, Utkarsh Mishra, Abolfazl Bayat
Quantum sensing is one of the key areas which exemplifies the superiority of quantum technologies. Nonetheless, most quantum sensing protocols operate efficiently only when the unk…
Trends of information backflow in disordered spin chains
Sudipto Singha Roy, Utkarsh Mishra, Debraj Rakshit
We investigate the trends of information backflow associated with the dynamics of a sub-part of a disordered spin-1/2 transverse field Heisenberg chain for different regimes of the…
Disordered Kitaev chain with long-range pairing: Loschmidt echo revivals and dynamical phase transitions
Utkarsh Mishra, R. Jafari, Alireza Akbari
We explore the dynamics of long-range Kitaev chain by varying pairing interaction exponent, . It is well known that distinctive characteristics on the nonequilibrium dynamics of…
Dynamical quantum correlations after sudden quenches
Utkarsh Mishra, Hadi Cheraghi, Saeed Mahdavifar +2
We employ the mean-field approach in the fermionic picture of the spin-1/2 XXZ chain to investigate the dynamics of bipartite quantum discord and concurrence under sudden quenching…