145 citations · 230 across the 5 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…
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…
Optically detected magnetic resonance of high-density ensemble of NV centers in diamond
Yuichiro Matsuzaki, Hiroki Morishita, Takaaki Shimooka +7
Optically detected magnetic resonance (ODMR) is a way to characterize the NV centers. Recently, a remarkably sharp dip was observed in the ODMR with a high-density ensemble of NV c…
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…
Improving the lifetime of the NV center ensemble coupled with a superconducting flux qubit by applying magnetic fields
Yuichiro Matsuzaki, Xiaobo Zhu, Kosuke Kakuyanagi +8
One of the promising systems to realize quantum computation is a hybrid system where a superconducting flux qubit plays a role of a quantum processor and the NV center ensemble is…