Strong interaction between light and a single trapped atom without a cavity
Tey Meng Khoon, Zilong Chen, Syed Abdullah Aljunid, Brenda Chng, Gleb Maslennikov, Christian Kurtsiefer
Abstract
We measured the extinction of a focused light beam by a single 87Rb atom localized in an optical dipole trap and found a value of 7.2% for a focused Gaussian beam resonantly interacting with an atomic two-level system. Various models describing interaction of an atom with a focused light field are compared to explain our experimental result. Our experiment suggests that a strong coupling may be achieved without cavity assistance. This opens new perspectives for a development of an efficient atom-photon interface for Quantum Information processing.