Ultraslow Propagation of Squeezed Vacuum Pulses with Electromagnetically Induced Transparency
arXiv:quant-ph/0611097 · doi:10.1103/PhysRevLett.99.153602
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 3.1us was observed for the probe pulse having a temporal width of 10 us.