Optical lattice clocks

Hidetoshi Katori, Masao Takamoto, Tomoya Akatsuka

We report on frequency comparison of two optical lattice clocks based on fermionic 87Sr trapped in 1D optical lattice and bosonic 88Sr in 3D one. We discuss that these two lattice clock configurations would optimize the lattice clocks' performance from the view point of the quantum statistical properties of interrogated atoms and optical lattice geometries. The frequency comparison of two optical clocks offers an important step to investigate the lattice clocks' uncertainty less than 10-15, where no working standard exists.

P. Lemonde

Chris W. Oates

Hidetoshi Katori, Masao Takamoto, Tomoya Akatsuka +1 more

Two "optical lattice clocks", which based on spin-polarized fermionic87Sr trapped in a one-dimensional optical lattice and on bosonic88Sr in a three-dimensional lattice, were operated simultaneously. From a beat note between the two optical clocks, stability as well as accuracy of "optical lattice clocks" was evaluated.

Masao Takamoto, Hidetoshi Katori

Hidetoshi Katori, Masao Takamoto, Tomoya Akatsuka +1 more

Two "optical lattice clocks", which based on spin-polarized fermionic 87Sr trapped in a one-dimensional optical lattice and on bosonic 88Sr in a three-dimensional lattice, were operated simultaneously. From a beat note between the two optical clocks, stability as well as accuracy of "optical lattice clocks" were evaluated. We report the progress of the measurements.