195 citations · 1.7k across the 54 of their papers we have counts for
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Diamond quantum thermometry: From foundations to applications
Masazumi Fujiwara, Yutaka Shikano
Diamond quantum thermometry exploits the optical and electrical spin properties of colour defect centres in diamonds and, acts as a quantum sensing method exhibiting ultrahigh prec…
Ultrafast Quantum-path Interferometry Revealing the Generation Process of Coherent Phonons
Kazutaka G. Nakamura, Kensuke Yokota, Yuki Okuda +5
Optical dual-pulse pumping actively creates quantum-mechanical superposition of the electronic and phononic states in a bulk solid. We here made transient reflectivity measurements…
Observation of rotational Brownian motion of single diamond nanoparticles
Masazumi Fujiwara, Yutaka Shikano, Ryuta Tsukahara +2
Capturing the rotational motion of single nanoparticles has been hindered owing to the difficulty of acquiring directional information under the optical diffraction limit. Here, we…
Spectrally resolved detection in transient-reflectivity measurements of coherent optical phonons in diamond
Kazutaka G. Nakamura, Kazuma Ohya, Hiroshi Takahashi +7
Coherent optical phonons in bulk solid system play a crucial role in understanding and designing light-matter interactions and can be detected by the transient-reflectivity measure…
Influence of pulse width and detuning on coherent phonon generation
Kazutaka G. Nakamura, Yutaka Shikano, Yosuke Kayanuma
We investigated the coherent phonon generation mechanism by irradiation of an ultrashort pulse with a simple two-level model. Our derived formulation shows that both impulsive stim…
Temperature Dependence of Highly Excited Exciton Polaritons in Semiconductor Microcavities
Tomoyuki Horikiri, Yasuhiro Matsuo, Yutaka Shikano +4
Observations of polariton condensation in semiconductor microcavities suggest that polaritons can be exploited as a novel type of laser with low input-power requirements. The low-e…