Low-temperature atomic systems manifest phenomena that are strikingly different from classical mechanics. Quantum mechanics implies that energy levels are discrete and this is the foundation of the current definition of the second.
Accuracy and precision of optical clocks are entering a regime where not only single-atom quantum mechanics is crucial, but also quantum many-body phenomena play a relevant role. When going beyond mean-field or perturbative theoretical approaches, their study generically requires massively parallel computation on HPC resources.
Ulf Peschel is chairholder at the Institute of Solid State Theory and Optics, a Senior Fellow of the Optical Society of America, a member of the Coucil of the Abbe School of Photonics, and Spokesperson of the cooperative research center SFB 1375 „Nonlinear Optics down to Atomic scales (NOA)“.
Quantum Frontier Group (QFG) is a joint research group of two laboratories in the Graduate School of Advanced Science and Engineering at Hiroshima University in Japan. Our purpose is to combine theoretical and experimental research on quantum systems to achieve a better understanding of quantum mechanics based on actual effects and phenomena in the real world.
Prof Holger F Hofmann, Prof Masataka Iinuma