Strong magnetic coupling of an ultracold gas to a superconducting waveguide cavity

Details Strong magnetic coupling of an ultracold gas to a superconducting waveguide cavity Strong magnetic coupling of an ultracold gas to a superconducting waveguide cavity

2008-09-15

arxiv.org/abs/0809.2552v1

Phys. Rev. Lett 103, 043603 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.103.043603

Placing an ensemble of $10^6$ ultracold atoms in the near field of a superconducting coplanar waveguide resonator (CPWR) with $Q \sim 10^6$ one can achieve strong coupling between a single microwave photon in the CPWR and a collective hyperfine qubit state in the ensemble with $g_\textit{eff} / {2 \pi} \sim 40$ kHz larger than the cavity line width of ${\kappa}/{2 \pi} \sim 7$ kHz. Integrated on an atomchip such a system constitutes a hybrid quantum device, which also can be used to interconnect solid-state and atomic qubits, to study and control atomic motion via the microwave field, observe microwave super-radiance, build an integrated micro maser or even cool the resonator field via the atoms.

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