21 citations · 130 across the 12 of their papers we have counts for
4 papers · 1 filter
Quantum Information Capsule and Information Delocalization by Entanglement in Multiple-qubit Systems
Koji Yamaguchi, Naoki Watamura, Masahiro Hotta
Where do entangled multiple-qubit systems store information? For information injected into a qubit, this question is nontrivial and interesting since the entanglement delocalizes t…
Pure State Entanglement Harvesting in Quantum Field Theory
Jose Trevison, Koji Yamaguchi, Masahiro Hotta
Quantum fields in vacuum states carry an infinite amount of quantum entanglement, and its entanglement entropy has the ultraviolet divergence. Harvesting protocols of the vacuum en…
Spatially Overlapped Partners in Quantum Field Theory
Jose Trevison, Koji Yamaguchi, Masahiro Hotta
In quantum field theory particles are physically defined as what Unruh-DeWitt particle detectors observe. By detecting a particle mode , a reduced density operator for a quantum…
Theorems on Entanglement Typicality in Non-equilibrium Dynamics
Koji Yamaguchi
The notion of typicality in statistical mechanics is essential to characterize a macroscopic system. An overwhelming majority of the pure state looks almost identical if we neglect…