CUA - Center for Ultracold Atoms

Research Highlights

MIT-Harvard Center for Ultracold Atoms, A National Science Foundation Physics Frontier Center

Thousands of atoms entangled with a single photon

Published 3.25.2015

Authors:
Robert McConnell, Hao Zhang, Jiazhong Hu, Senka Ćuk & Vladan Vuletić

Physicists from MIT and the University of Belgrade have developed a new technique that can successfully entangle 3,000 atoms using only a single photon.

Physicists from MIT and the University of Belgrade have developed a new technique that can successfully entangle 3,000 atoms using only a single photon. The results, published today in the journal Nature, represent the largest number of particles that have ever been mutually entangled experimentally.

The researchers say the technique provides a realistic method to generate large ensembles of entangled atoms, which are key components for realizing more-precise atomic clocks.

“You can make the argument that a single photon cannot possibly change the state of 3,000 atoms, but this one photon does — it builds up correlations that you didn’t have before,” says Vladan Vuletic, the Lester Wolfe Professor in MIT’s Department of Physics, and the paper’s senior author. “We have basically opened up a new class of entangled states we can make, but there are many more new classes to be explored.”

Vuletic’s co-authors on the paper are Robert McConnell, Hao Zhang, and Jiazhong Hu of MIT, as well as Senka Cuk of the University of Belgrade.

Read the full article from the MIT News Office.

The results have also been reported by Physics World.

FULL PAPER >>