Dual-Species Matter Qubit Entangled with Light
Shau-Yu Lan, S. D. Jenkins, T. Chanelière, Dzmitry Matsukevich, C. J. Campbell, Ran Zhao, T. A. B. Kennedy, A. Kuzmich · Physical Review Letters · 2007
We propose and demonstrate an atomic qubit based on a cold 85Rb-87Rb isotopic mixture, entangled with a frequency-encoded optical qubit. The interface of an atomic qubit with a single spatial light mode, and the ability to independently address the two atomic qubit states, should provide the basic interferometrically robust element of a quantum network.