P V Zacharenko, D V Tsarev, M M Nikitina and A P Alodjants
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引用次数: 0
Abstract
This work studies the ultrastrong coupling (USC) regime for quantized electromagnetic (EM) fields interacting with two-level systems (qubits) arranged within the complete graph nodes of photonic networks beyond the rotating wave approximation. We show the nontrivial behavior of Bloch–Siegert (BS) phase inherent to the field is established in the structure. The collective BS phase dominates under the strong matter-field coupling condition. The network complete graph interface significantly improves the cooperativity parameter to achieve this condition. However, increasing the coupling parameter essentially beyond the strong coupling condition causes saturation effects that suppress the collective photonic phase. We demonstrate that in the USC regime the EM field exhibits the features of a single qubit BS phase enhanced by the network connectivity. Our findings open new perspectives in quantum information processing with superconductor metamaterials.
期刊介绍:
Laser Physics Letters encompasses all aspects of laser physics sciences including, inter alia, spectroscopy, quantum electronics, quantum optics, quantum electrodynamics, nonlinear optics, atom optics, quantum computation, quantum information processing and storage, fiber optics and their applications in chemistry, biology, engineering and medicine.
The full list of subject areas covered is as follows:
-physics of lasers-
fibre optics and fibre lasers-
quantum optics and quantum information science-
ultrafast optics and strong-field physics-
nonlinear optics-
physics of cold trapped atoms-
laser methods in chemistry, biology, medicine and ecology-
laser spectroscopy-
novel laser materials and lasers-
optics of nanomaterials-
interaction of laser radiation with matter-
laser interaction with solids-
photonics