25 citations · 75 across the 5 of their papers we have counts for
5 papers
Simulation of positronium laser cooling using the Lindblad master equation
Kenji Shu, Sohma Shiraishi, Kosuke Yoshioka
We present a formulation and numerical results for positronium (Ps) laser cooling. The formulation is based on the Lindblad master equation and follows the time evolution of the de…
Laser cooling of positronium
K. Shu, Y. Tajima, R. Uozumi +16
When laser radiation is skilfully applied, atoms and molecules can be cooled allowing precise measurements and control of quantum systems. This is essential in fundamental studies…
Development of an optimal laser for chirp cooling of positronium based on chirped pulse-train generator
Kenji Shu, Naoki Miyamoto, Yuto Motohashi +3
We report the development and characterization of a pulsed 243 nm laser that is optimal for the cooling of positronium (Ps). The laser, which is based on the recent chirped pulse-t…
100ps time resolution with thin silicon pixel detectors and a SiGe HBT amplifier
Mathieu Benoit, Roberto Cardarelli, Stéphane Débieux +5
A 100um thick silicon detector with 1mm2 pad readout optimized for sub-nanosecond time resolution has been developed and tested. Coupled to a purposely developed amplifier based on…
Study on Cooling of Positronium for Bose-Einstein Condensation
Kenji Shu, Xing Fan, Takayuki Yamazaki +4
A new method of cooling positronium down is proposed to realize Bose-Einstein condensation of positronium. We perform detail studies about three processes (1) thermalization proces…