Our group studies quantum physics through artificially designed superconducting circuits or ultracold neutral atoms including Bose-Einstein condensate. The physics of macroscopic quantum phenomena is really fascinating, and at sufficiently low temperatures, quantum mechanical behavior (ODLRO: off-diagonal long range order) emerges with macroscopic numbers of constituents over a scale of mm or more, which we could never observe in the classical world. There, a state of the electrical circuit can be described as a single wavefunction, energy levels are quantized, just like in atoms and molecules. Our research focuses on understanding and controlling the quantum properties such as superconducting quantum circuits, a microwave photon resonator, a nanomechanical resonator, and ultracold neutral atoms in trapping potential, with possible applications toward the quantum computation and novel electronic devices.

The permanent staff in our group are Kousuke Kakuyanagi, Shin-ichi Karimoto, Yuichiro Matsuzaki, Hayato Nakano, Shiro Saito, Kouichi Semba(group leader), and Hirotaka Tanaka.