Phase shift of a weak coherent beam induced by a single atom.
We report on a direct measurement of a phase shift on a weak coherent beam by a single 87Rb atom in a Mach-Zehnder interferometer. By strongly focusing the probe mode to the location of the atom, a maximum phase shift of about 1 degree is observed experimentally.
Aljunid
Syed Abdullah
SA
Center for Quantum Technologies and Department of Physics, National University of Singapore, 3 Science Drive 2, Singapore, 117543.
Tey
Meng Khoon
MK
Chng
Brenda
B
Liew
Timothy
T
Maslennikov
Gleb
G
Scarani
Valerio
V
Kurtsiefer
Christian
C