Related Experiment Video
Updated: Jul 13, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
Reversible state transfer between light and a single trapped atom
1Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, CA 91125, USA.
Abstract:
We demonstrate the reversible mapping of a coherent state of light with a mean photon number (-)n approximately equal to 1.1 to and from the hyperfine states of an atom trapped within the mode of a high-finesse optical cavity. The coherence of the basic processes is verified by mapping the atomic state back onto a field state in a way that depends on the phase of the original coherent state. Our experiment represents an important step toward the realization of cavity QED-based quantum networks, wherein coherent transfer of quantum states enables the distribution of quantum information across the network.
Related Concept Videos
Deactivation Processes: Jablonski Diagram
Atomic Nuclei: Nuclear Relaxation Processes
Atomic Nuclei: Nuclear Spin State Overview
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
Carrier Generation and Recombination
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
Molecular Spectroscopy: Absorption and Emission

