تقرير
Waveguide-mediated interaction of artificial atoms in the strong coupling regime
| العنوان: | Waveguide-mediated interaction of artificial atoms in the strong coupling regime |
|---|---|
| المؤلفون: | Mirhosseini, Mohammad, Kim, Eunjong, Zhang, Xueyue, Sipahigil, Alp, Dieterle, Paul B., Keller, Andrew J., Asenjo-Garcia, Ana, Chang, Darrick E., Painter, Oskar |
| سنة النشر: | 2018 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | Waveguide quantum electrodynamics studies photon-mediated interactions of quantum emitters in a one-dimensional radiation channel. Although signatures of such interactions have been observed previously in a variety of physical systems, observation of coherent cooperative dynamics has been obscured by radiative decay of atoms into the waveguide. Employing transmon qubits as artificial atoms coupled to a microwave coplanar waveguide, here we observe dynamical oscillations in an open system where a designated probe qubit interacts with an entangled dark state of an array of qubits which effectively traps radiation as an atomic cavity. The qubit-cavity system is shown to achieve a large cooperativity of $\mathcal{C}=172$ due to collective enhancement of photon-mediated interactions, entering the strong coupling regime. The quantum coherence of the dark state cavity is also explored through its nonlinear response at the single-excitation level. With realistic refinements, this system is suitable for studying the many-body dynamics of large ($N>10$) quantum spin chains, synthesizing highly non-classical radiation fields on demand, and implementing universal quantum logic operations with high fidelity on information encoded within decoherence-free subspaces. Comment: 19 pages, 8 figures, 5 appendices |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1809.09752 |
| رقم الأكسشن: | edsarx.1809.09752 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |