20 citations · 30 across the 5 of their papers we have counts for
5 papers
Bound on the distance between controlled quantum state and target state under decoherence
Kohei Kobayashi
To implement quantum information technologies, carefully designed control for preparing a desired state plays a key role. However, in realistic situation, the actual performance of…
Control limit for the quantum state preparation under stochastic control errors
Kohei Kobayashi
We investigate the effect of stochastic control errors on the Hamiltonian that controls a closed quantum system. Quantum information technologies require careful control for prepar…
Reachable Set Characterization of Open Quantum System by Quantum Speed Limit
Kohei Kobayashi
In recent years, Arenz et al. proposed the idea of reachable set characterization based on the quantum speed limit (QSL); that is, the reachable set of the target unitary gate in a…
Quantum speed limit for robust state characterization and engineering
Kohei Kobayashi, Naoki Yamamoto
In this paper, we propose a concept to use a quantum speed limit (QSL) as a measure of robustness of states, defining that a state with bigger QSL is more robust. In this perspecti…
Control limit on quantum state preparation under decoherence
Kohei Kobayashi, Naoki Yamamoto
Quantum information technologies require careful control for generating and preserving a desired target quantum state. The biggest practical obstacle is, of course, decoherence. Th…