・"Ultracold Fermions: Application to Ultrastable Optical Clock", Workshop on Ultracold Fermi Gases Levico (Trento - Italy), 4-6 March 2004

・"Ultrastable Optical Clock with Neutral Atoms in an Engineered Light Shift Trap", Japan German Colloquium 2004 on Quantum Optics, organised by JSPS and MPG, in Wildbad Kreuth, from Feb. 9 to 12, 2004

・"Ultrastable optical clock with neutral atoms in an engineered optical lattice," CAUAC network meeting, Braunschweig, Germany, 10-12 Oct. 2003.

・"Neutral-Atom Based Optical-Clock in an Engineered Light Shift Trap," Japan-US seminar, Yatsugatake Royal Hotel, 17-19 Sept. 2003.

・"Optical Lattice Clock," Symposium on Applied Physics Alliance between Stanford University and the University of Tokyo -Quantum Correlation and Coherence-, Sanjyo Hall in Hongo Campus of Univ. of Tokyo, 16 Sept. 2003.

・"Lifetime Measurement of the 3P2 Metastable State of Strontium Atoms", M. Yasuda and H. Katori, Second workshop on Cold Alkaline-Earth Atoms, Copenhagen Denmark, (September 11-13, 2003)

・Optical Lattice Clock: precision spectroscopy of neutral atoms in a tight confinement." 6th International Conference on Laser Spectroscopy (ICOLS03), in Palm Cove, North Queensland, Australia, 13-18 July 2003.

・“High resolution spectroscopy of strontium atoms in an optical lattice: toward the optical lattice clock.” 7th workshop on atom optics and interferometry in Lunteren, The Netherlands (September 28 - October 2, 2002),

・"Ultracold strontium atoms in a tight confinement; collisions and spectroscopy." Quantum Optics 2002, Euro Conference in San Feliu de Guixols, Spain (September 21- 26, 2002).

・"High-precision spectroscopy of strontium atoms in an optical lattice". International Quantum Electronics Conference (IQEC 2002), in Moscow, Russia, (June 22-8, 2002).

・“Sideband cooling and Lamb-Dicke spectroscopy of Sr atoms in an optical lattice”. 6th Symposium on Frequency Standards and Metrology, St Andrews, Scotland, (September 9-14, 2001)

・“Tightly confined ultracold strontium atoms”. Workshop on Quantum Gases, Reichneau, Germany, (July 19-21, 2001).

・“Narrow-line cooling of atoms toward quantum degeneracy”, Atomic Physics Gordon Research Conference, at Williams College, Williamstown, Massachusetts, USA, (June 17-22, 2001).

・“Laser cooling of strontium atoms toward quantum degeneracy”. US-Japan seminar on Coherent Quantum Systems, Newport, Rhode Island, USA, (September 17-21, 2000).

・“Laser cooling of strontium atoms toward quantum degenerate regime”. International Quantum Electronics Conference (IQEC), Nice Acropolis, France, (September 10-15, 2000).

・“Experiments on ultracold strontium atoms”. Workshop on Cold Alkaline-Earth Atoms, at the Institute for Theoretical Atomic and Molecular Physics at the Harvard-Sumithsonian Center for Astrophysics, (September 7-9, 2000).

・“Laser cooling of strontium atoms toward quantum degeneracy”. International Conference on Atomic Physics, ICAP 2000, Florence, Italy, (June 5-9, 2000).

・“Laser cooling of strontium atoms toward quantum degeneracy”. The 7th Symposium on Laser Spectroscopy, Taejon, Korea, (5-6 November, 1999)