Status report on an 171Yb optical lattice clock at NMIJ

We report the status of our
¹⁷¹
Yb optical lattice clock. The frequency stability of the Yb lattice clock is 1 × 10
^-14
(τ/s)
^-1/2
where τ is an averaging time. The systematic uncertainty of the Yb lattice clock is evaluated to be 3.6 × 10
^-16
. Towards contribution to the International Atomic Time, some contrivances are incorporated in order for the Yb lattice clock to run for a long term. For example, automatic relocking schemes are recently prepared for phase locking and injection locking.