K. Usami

Publication List Details

Period

1981 - 2009

Number

38

Co-Authors

steel and (2008)

Y. Itoh, K. Usami, M. Sugie, C. Liu

analyses on impact performance of

Generation of polarization-entangled photon pairs in a cascade of two type-I crystals pumped by femtosecond pulses (2002)

Nambu, Y., Usami, K., Tsuda, Y., Matsumoto, K., Nakamura, K.

We report the generation of polarization-entangled photons by femtosecond-pulse-pumped spontaneous parametric down-conversion in a cascade of two type-I crystals. Highly entangled pulsed states were...

Numerical analyses of steel and aluminum alloy bridge guard fences (2001)

伊藤, 義人, Itoh, Yoshito, Usami, K, Kusama, Ryuichi, 貝沼, 重信, Kainuma, Shigenobu

The performances of the guard fence were prescribed in the new code of the guard fence issued in April 1999 in Japan. In the new code, the full-scale experiment for checking the performances of guard...

Restoration of Entanglement by Spectral Filters (2001)

Usami, K., Nambu, Y., Ishizaka, S., Hiroshima, T., Tsuda, Y., Matsumoto, K., ...

We experimentally demonstrate that entanglement of bi-photon polarization state can be restored by spectral filters. This restoration procedure can be viewed as a new class of quantum eraser, which...

CHEMICAL SITES OF RARE GAS ATOMS IN AMORPHOUS SILICON (1981)

Katayama, Y., Shimada, T., Usami, K., Maruyama, E.

The chemical sites of the neon atoms imbedded in hydrogenated amorphous silicon a-Si : H that is produced using Ne as a sputtering agent are examined using X-ray photoelectron spectroscopy (XPS)....

CHEMICAL SITES OF RARE GAS ATOMS IN AMORPHOUS SILICON (1981)

Katayama, Y., Shimada, T., Usami, K., Maruyama, E.

The chemical sites of the neon atoms imbedded in hydrogenated amorphous silicon a-Si : H that is produced using Ne as a sputtering agent are examined using X-ray photoelectron spectroscopy (XPS)....

CHEMICAL SITES OF RARE GAS ATOMS IN AMORPHOUS SILICON (1981)

Katayama, Y., Shimada, T., Usami, K., Maruyama, E.

The chemical sites of the neon atoms imbedded in hydrogenated amorphous silicon a-Si : H that is produced using Ne as a sputtering agent are examined using X-ray photoelectron spectroscopy (XPS)....