title: Ultraslow propagation of squeezed vacuum pulses with electromagnetically induced transparency.
abstract: We have succeeded in observing ultraslow propagation of squeezed vacuum pulses with electromagnetically induced transparency. Squeezed vacuum pulses (probe lights) were incident on a laser-cooled 87Rb gas together with an intense coherent light (control light). A homodyne method sensitive to the vacuum state was employed for detecting the probe pulse passing through the gas. A delay of 3.1 micros was observed for the probe pulse having a temporal width of 10 micros.
authors.affiliation: Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8550, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Akamatsu
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Yokoi
authors.forename: Manabu
authors.initials: M
authors.lastname: Arikawa
authors.forename: Satoshi
authors.initials: S
authors.lastname: Nagatsuka
authors.forename: Takahito
authors.initials: T
authors.lastname: Tanimura
authors.forename: Akira
authors.initials: A
authors.lastname: Furusawa
authors.forename: Mikio
authors.initials: M
authors.lastname: Kozuma