Strong magnetic coupling of an ultracold gas to a superconducting waveguide cavity
| Autor: | J. Verdú, Jörg Schmiedmayer, Helmut Ritsch, Ch. Koller, Johannes Majer, Hashem Zoubi |
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| Rok vydání: | 2008 |
| Předmět: |
Physics
Superconductivity Condensed Matter::Quantum Gases Waveguide (electromagnetism) Photon Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Atomic Physics (physics.atom-ph) Coplanar waveguide Cavity quantum electrodynamics General Physics and Astronomy FOS: Physical sciences Physics::Optics 7. Clean energy 01 natural sciences Inductive coupling 010305 fluids & plasmas Physics - Atomic Physics Ultracold atom 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Physics::Atomic Physics 010306 general physics Hyperfine structure |
| Zdroj: | Physical review letters. 103(4) |
| ISSN: | 0031-9007 |
| Popis: | Placing an ensemble of ${10}^{6}$ ultracold atoms in the near field of a superconducting coplanar waveguide resonator with a quality factor $Q\ensuremath{\sim}{10}^{6}$, one can achieve strong coupling between a single microwave photon in the coplanar waveguide resonator and a collective hyperfine qubit state in the ensemble with ${g}_{\mathrm{eff}}/2\ensuremath{\pi}\ensuremath{\sim}40\text{ }\text{ }\mathrm{kHz}$ larger than the cavity linewidth of $\ensuremath{\kappa}/2\ensuremath{\pi}\ensuremath{\sim}7\text{ }\text{ }\mathrm{kHz}$. Integrated on an atomchip, such a system constitutes a hybrid quantum device, which also can be used to interconnect solid-state and atomic qubits, study and control atomic motion via the microwave field, observe microwave superradiance, build an integrated micromaser, or even cool the resonator field via the atoms. |
| Databáze: | OpenAIRE |
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