47 citations · 50 across the 2 of their papers we have counts for
2 papers
quant-ph2006★ 47 cited
Suboptimal quantum-error-correcting procedure based on semidefinite programming
Naoki Yamamoto, Shinji Hara, Koji Tsumura
In this paper, we consider a simplified error-correcting problem: for a fixed encoding process, to find a cascade connected quantum channel such that the worst fidelity between the…
math-ph2006★ 3 cited
Synthesis of stabilizing switched controllers for N-dimensional quantum angular momentum systems
Kyosuke Matsumoto, Koji Tsumura, Shinji Hara
This paper provides a class of feedback controllers that guarantee global stability of quantum angular momentum systems. The systems are in general finite dimensions and the stabil…