Zero-point electromagnetic fields were first introduced to explain the origin of atomic
spontaneous emission. Vacuum fluctuations associated with the zero-point energy in …

We herein report a simultaneous frequency stabilization of two 780-nm external cavity diode
lasers using a precision wavelength meter (WLM). The laser lock performance is …

Non-equilibrium dynamics expands our understanding on physical processes based on the
conventional equilibrium physics. In particular, non-equilibrium steady states with …

The spectrum of the cavity-QED microlaser or micromaser is expected to show distinctive
features of the coherent light-matter interaction, which are obscured in the conventional …

We report the first experimental observation of the cavity-QED microlaser spectrum,
specifically the unconventional frequency pulling brought by a strong atom-cavity coupling at …

Exact measurement of the second-order correlation function g (2)(t) of a light source is
essential when investigating the photon statistics and the light generation process of the …

We observed efficient sub-Doppler cooling of Rb 85 atoms under a nonzero magnetic field
in a moving optical lattice formed in a bichromatic magneto-optical trap. Trap laser detunings …

We present a study on characteristics of a magneto-optical trap (MOT) as an optical lattice.
Fluorescence spectra of atoms trapped in a MOT with a passively phase-stabilized beam …

We study finite-temperature properties of the strongly interacting bosons in three-
dimensional lattices by employing the combined Bogoliubov method and the quantum rotor …

We report a correlation between periodic patterns of cold-atom density and field polarization
that gives new insight into a nearly 30 year old question about the role of optical phases in …