Hidetoshi Katori

from Wikipedia, the free encyclopedia

Hidetoshi Katori ( Japanese 香 取 秀 俊 , Katori Hidetoshi ; born September 27, 1964 in the district of Kita (former city of Tokyo ), Tokyo Prefecture ) is a Japanese physicist.

Katori studied applied physics at the University of Tokyo with a bachelor's degree in 1988 and a master's degree in 1990 and received his doctorate there in 1994. As a post-doctoral student he was at the Max Planck Institute for Quantum Optics in Garching until 1997 and group leader of an ERATO project of the Japanese Science and Technology Agency (JST) from 1997 to 2002 . In 1999 he became Associate Professor and in 2010 Professor of Applied Physics at the University of Tokyo. Since 2011 he has also been chief scientist in the quantum metrology laboratory at RIKEN and since 2014 team leader at the Center for Advanced Photonics at RIKEN.

In 2014 he took up a visiting professorship at the University of Tübingen .

In 2001, Katori proposed the optical lattice clock , an atomic clock based on an optical transition of a neutral atom and using many identical atoms trapped in an optical lattice to increase accuracy , and demonstrated it in 2003. It became Since then, it has been adopted and further developed by several groups and has (as of 2018) an accuracy of more than 18 decimal places (corresponding to an error of less than one second in 30 billion years). Katori is working on improving the accuracy to 19 decimal places (relative accuracy 10 −19 ). As an application, he demonstrated its use in relativistic geodesy : using the general relativistic time dilation , the atomic clocks could measure height differences of 1 cm over great distances. He also uses the comparison of atomic clocks with Sr , Yb and Hg atoms to limit the hypothetical time dependence of physical constants (especially the fine structure constant ).

He is also concerned with laser cooling and atom traps for high-precision Doppler -free laser spectroscopy and the development of super-radiant lasers with particularly narrow line widths .

In 2011 he received the Asahi Prize , in 2015 the Prize of the Japanese Academy of Sciences ( Nippon-Gakushiin-shō , "Japan Academy Prize") and in 2017 the Leo Esaki Prize for the invention and realization of high-precision optical lattice clocks . In 2011 he received the Philipp Franz von Siebold Prize , in 2008 the II Rabi Award and in 2005 the Julius Springer Prize for Applied Physics and the European Time and Frequency Award.

Fonts (selection)

  • with T. Takano, M. Takamoto, I. Ushijima, N. Ohmae, T. Akatsuka, A. Yamaguchi, Y. Kuroishi, H. Munekane, B. Miyahara: Geopotential measurements with synchronously linked optical lattice clocks , Nature Photon. 10, 662 (2016).
  • with N. Nemitz, T. Ohkubo, M. Takamoto, I. Ushijima, M. Das, N. Ohmae: Frequency ratio of Yb and Sr clocks with 5 × 10-17 uncertainty at 150 seconds averaging time , Nature Photon. 10, 258 (2016).
  • with K. Yamanaka, N. Ohmae, I. Ushijima, M. Takamoto: Frequency Ratio of 199Hg and 87Sr Optical Lattice Clocks beyond the SI Limit , Physical Review Letters 114, 230801 (2015).
  • with VD Ovsiannikov, SI Marmo, VG Palchikov: Strategies for reducing the light shift in atomic clocks , Physical Review A 91, 052503 (2015)
  • with I. Ushijima, M. Takamoto, M. Das, T. Ohkubo: Cryogenic optical lattice clocks , Nature Photonics 9, 185-189 (2015).
  • Andrei Derevianko, Hidetoshi Katori: Colloquium: Physics of optical lattice clocks . In: Rev. Mod. Phys. tape 83 , no. 2 , 2011, p. 331–347 , doi : 10.1103 / RevModPhys.83.331 , arxiv : 1011.4622 , bibcode : 2011RvMP ... 83..331D .
  • with M. Takamoto, T. Takano: Frequency comparison of optical lattice clocks beyond the Dick limit, Nature Photon. 5: 288-292 (2011).
  • Optical lattice clocks and quantum metrology, Nature Photon 5, 203-210 (2011).
  • with K. Hashiguchi, EY Il'inova, VD Ovsiannikov: Magic Wavelength to Make Optical Lattice Clocks Insensitive to Atomic Motion, Phys. Rev. Lett. 103, 153004 (2009).
  • with T. Akatsuka, M. Takamoto: Optical lattice clocks with non-interacting bosons and fermions , Nature Physics 4, 954-959 (2008).
  • with H. Hachisu, K. Miyagishi, SG Porsev, A. Derevianko, VD Ovsiannikov, VG Pal'chikov, M. Takamoto: Trapping of Neutral Mercury Atoms and Prospects for Optical Lattice Clocks, Phys. Rev. Lett. 100, 053001 (2008).
  • with M. Takamoto, FL Hong, R. Higashi: An optical lattice clock, Nature 435, 321-324 (2005).
  • with M. Takamoto, VG Pal'chikov, VD Ovsiannikov: Ultrastable Optical Clock with Neutral Atoms in an Engineered Light Shift Trap, Phys. Rev. Lett. 91, 173005 (2003).
  • with T. Ido, Y. Isoya, MK-Gonokami: Magneto-optical trapping and cooling of strontium atoms down to the photon recoil temperature, Phys. Rev. Lett., 82, 1116-1119 (1999).

Web links

Individual evidence

  1. ↑ Japanese Academy of Sciences , March 12, 2015: 日本 学士 院 賞 授 賞 の 決定 に つ い て> 6. 香 取 秀 俊 , Retrieved November 23, 2018
  2. ↑ Cooperation on super-precise atomic clocks. University of Tübingen, July 22, 2014, accessed on November 24, 2018 .
  3. ↑ Hidetoshi Katori, Masao Takamoto, VG Pal'chikov, VD Ovsiannikov: Ultrastable Optical Clock with Neutral Atoms in an Engineered Light Shift Trap . In: Phys. Rev. Lett. tape 91 , 2003, p. 173005 , doi : 10.1103 / PhysRevLett.91.173005 , arxiv : physics / 0309043 .
  4. ^ Optical lattice clock shatters precision record. In: Physics World. March 19, 2018, accessed November 24, 2018 (English, accuracy of 2.5 · 10 -19 demonstrated by Jun Ye's group ).
personal data
SURNAME Katori, Hidetoshi
ALTERNATIVE NAMES 香 取 秀 俊 (Japanese)
BRIEF DESCRIPTION Japanese physicist
DATE OF BIRTH September 27, 1964
PLACE OF BIRTH Kita District , Tokyo Prefecture