D. Akamatsu

activity

20022025

most citedEntanglement-Enhanced Optical Atomic Clock

303 citations · 1.7k across the 27 of their papers we have counts for

collaborators

Showing 2015Show all

3 papers · 1 filter

physics.atom-ph2015★ 28 cited

Improved frequency measurement of the $^{1} S_{0}$ - $^{3} P_{0}$ clock transition in $^{87}$ Sr using the Cs fountain clock at NMIJ as a transfer oscillator

Takehiko Tanabe, Daisuke Akamatsu, Takumi Kobayashi +10

We performed an absolute frequency measurement of the $^{1} S_{0}$ - $^{3} P_{0}$ transition in $^{87}$ Sr with a fractional uncertainty of $1.2 \times 1 0^{- 15}$ , which is less than one thi…

physics.optics2015★ 28 cited

A compact iodine-laser operating at 531 nm with stability at the 10 $^{- 12}$ level and using a coin-sized laser module

Takumi Kobayashi, Daisuke Akamatsu, Kazumoto Hosaka +6

We demonstrate a compact iodine-stabilized laser operating at 531 nm using a coin-sized light source consisting of a 1062-nm distributed-feedback diode laser and a frequency-doubli…

quant-ph2015★ 22 cited

Binary phase oscillation of two mutually coupled semiconductor lasers

Shoko Utsunomiya, Naoto Namekata, Kenta Takata +3

A two-site Ising model is implemented as an injection-locked laser network consisting of a single master laser and two mutually coupled slave lasers. We observed ferromagnetic and…

Improved frequency measurement of the 1S0​-3P0​ clock transition in 87Sr using the Cs fountain clock at NMIJ as a transfer oscillator

A compact iodine-laser operating at 531 nm with stability at the 10−12 level and using a coin-sized laser module

Binary phase oscillation of two mutually coupled semiconductor lasers

Improved frequency measurement of the $^{1} S_{0}$ - $^{3} P_{0}$ clock transition in $^{87}$ Sr using the Cs fountain clock at NMIJ as a transfer oscillator

A compact iodine-laser operating at 531 nm with stability at the 10 $^{- 12}$ level and using a coin-sized laser module