Capacitive coupling of atomic systems to mesoscopic conductors.
We describe a technique that enables a strong, coherent coupling between isolated neutral atoms and mesoscopic conductors. The coupling is achieved by exciting atoms trapped above the surface of a superconducting transmission line into Rydberg states with large electric dipole moments that induce voltage fluctuations in the transmission line. Using a mechanism analogous to cavity quantum electrodynamics, an atomic state can be transferred to a long-lived mode of the fluctuating voltage, atoms separated by millimeters can be entangled, or the quantum state of a solid-state device can be mapped onto atomic or photonic states.
ITAMP, Harvard-Smithsonian Center for Astrophysics, and Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA.
Anders S
AS
Sørensen
Caspar H
CH
van der Wal
Lilian I
LI
Childress
Mikhail D
MD
Lukin