72 citations · 218 across the 8 of their papers we have counts for
8 papers
Role of initial quantum correlation in transient linear response
Chikako Uchiyama, Masaki Aihara
The linear transient response of a two-level system coupled with an environmental system is studied under correlated and factorized initial conditions. We find that the transient r…
Purely electronic THz polarization in dimer Mott insulators
Hiroki Gomi, Takayuki Imai, Akira Takahashi +1
We theoretically discover purely electronic polarization modes in THz frequency region in dimer Mott insulators -(BEDT-TTF)X. The unusual low-frequency modes arise from the…
Master equation approach to line shape in dissipative systems
Chikako Uchiyama, Masaki Aihara, Mizuhiko Saeki +1
We propose a formulation to obtain the line shape of a magnetic response with dissipative effects that directly reflects the nature of the environment. Making use of the fact that…
Multi pulse control of entanglement
Chikako Uchiyama, Masaki Aihara
We study the effectiveness of multi pulse control to suppress the degradation of entanglement. Based on a linearly interacting spin-boson model, we show that the multi pulse applic…
Control of entanglement with multipulse application
Chikako Uchiyama, Masaki Aihara
We show that the multipulse application can suppress the degradation of the quantum entanglement with focusing on the concurrence, the degree of entanglement. By evaluating the tim…
Synchronized pulse control of decoherence
Chikako Uchiyama, Masaki Aihara
We present a new strategy for multipulse control over decoherence. When a two-level system interacts with a reservoir characterized by a specific frequency, we find that the decohe…