Demonstrating nanophotonic switching using near-field pump-probe photoluminescence spectroscopy of CuCl quantum cubes

直紀 松浦

Alejandro González-Tudela, Andreas Reiserer, Juan José García‐Ripoll +1 more

Tadashi Kawazoe, Kiyoshi Kobayashi, Jaehyun Lim +2 more

We propose a near-field optical nano-switch. The switching mechanism is based on the near-field energy transfer among sub-levels in quantum cubes. To inspect the switching, we observed the size-selected spatial distribution of CuCl quantum cubes.

Christophe Couteau

K. Nishibayashi, Takumi Yamamoto, Tadashi Kawazoe +3 more

We demonstrated nanophotonic gate operation of coupled InAs quantum dots using the pump-and-probe micro-photoluminescence measurement. The result indicates that we can select either AND- or NOT-gate operation by controlling the pulse intensity.

S Efumi, Yuki Uchibori, Jun Ishihara +1 more

We measured the transient reflection spectra induced by infrared light for a CuCl single crystal using pump-probe spectroscopy. A Stark shift of the 1 s exciton was observed using light with a near resonant energy between the 1 s and 2 p exciton levels. The amount of energy shift due to the Stark effect was obtained from the absorption spectra calculated using the Kramers–Kronig transform. We investigated the energy shift of 1 s excitons with respect to the excitation density. This is the first published report on the Stark effect of 1 s exciton associated with the internal energy levels of the excitons in CuCl crystal.