145 citations · 145 across the 3 of their papers we have counts for
5 papers
Spin amplification in realistic systems
Ivan Iakoupov, Victor M. Bastidas, Yuichiro Matsuzaki +2
Spin amplification is the process that ideally increases the number of excited spins when one of them is excited initially. We show that by applying optimal control techniques to d…
Identifying impurities in a silicon substrate by using a superconducting flux qubit
Hiraku Toida, Kosuke Kakuyanagi, Leonid V. Abdurakhimov +3
A bismuth-doped silicon substrate was analyzed by using a magnetometer based on a superconducting flux qubit. The temperature dependence of the magnetization indicates that the sil…
A strict experimental test of macroscopic realism in a superconducting flux qubit
George C. Knee, Kosuke Kakuyanagi, Mao-Chuang Yeh +6
Macroscopic realism is the name for a class of modifications to quantum theory that allow macroscopic objects to be described in a measurement-independent manner, while largely pre…
On-chip quantum feedback control of a superconducting qubit
K. Kakuyanagi, A. Kemp, T. Baba +4
Quantum feedback is a technique for measuring a qubit and applying appropriate feedback depending on the measurement results. Here, we propose a new on-chip quantum feedback method…
Analysis of the spectroscopy of a hybrid system composed of a superconducting flux qubit and diamond NV centers
H. Cai, Y. Matsuzaki, K. Kakuyanagi +8
A hybrid system that combines the advantages of a superconducting flux qubit and an electron spin ensemble in diamond is one of the promising devices to realize quantum information…