Arun Nanduri

Entanglement spreading in a many-body localized system

Motivated by the findings of logarithmic spreading of entanglement in a many-body localized system, we identify and untangle two factors contributing to the spreading of entanglement in the fully many-body localized phase, where all many-body eigenstates are localized. Performing full diagonalizations of an

Equilibration and coarsening in the quantum O(N) model at infinite N

XXZ

Exploring quantum control landscape structure

spin model with random longitudinal fields, we demonstrate a linear dependence of the spreading rate on the decay length

Rabi oscillations, decoherence, and disentanglement in a qubit–spin-bath system

(\ensuremath{\xi})

Decoherence of a single spin coupled to an interacting spin bath

of the effective interaction between localized pseudospins (l-bits), which depends on the disorder strength, and on the final value of entanglement per spin

Optimal suppression of defect generation during a passage across a quantum critical point

({s}_{\ensuremath{\infty}})

Exploring the complexity of quantum control optimization trajectories

, which primarily depends on the initial state. The entanglement entropy thus grows with time as

Molecular Magnetism in MnTe Clusters

\ensuremath{\sim}\ensuremath{\xi}\ifmmode\times\else\texttimes\fi{}{s}_{\ensuremath{\infty}}logt

Relation of quantum control mechanism to landscape structure

, providing support for the phenomenology of many-body localized systems proposed by Huse and Oganesyan.

On the spreading rate of entanglement in a many-body localized quantum spin chain

The quantum O(N) model in the infinite