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

Abstract

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 $g_{\text{eff}}/2\pi \sim 40$ 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.

References in corpus (9)

• Strong atom-field coupling for Bose-Einstein condensates in an optical cavity on a chip
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• Cavity QED with a Bose-Einstein condensate
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• Long-Range Order in Electronic Transport through Disordered Metal Films
• Persistent Supercurrent Atom Chip
• Quantum computing with a single molecular ensemble and a Cooper pair box

Cited by in corpus (2)

• Superradiant and Dark Exciton States in an Optical Lattice within a Cavity
• Quantum Phases of Ultracold Bosonic Atoms in two Bands of an Optical-Lattice coupled by a Cavity Field