Bayer, Andreas and Pozimski, Marcel and Schambeck, Simon and Schuh, Dieter and Huber, Rupert and Bougeard, Dominique and Lange, Christoph (2017) Terahertz Light-Matter Interaction beyond Unity Coupling Strength. NANO LETTERS, 17 (10). pp. 6340-6344. ISSN 1530-6984, 1530-6992
Full text not available from this repository. (Request a copy)Abstract
Achieving control over light matter interaction in custom-tailored nanostructures is at the core of modern quantum electrodynamics. In strongly and ultrastrongly coupled systems, the excitation is repeatedly exchanged between a resonator and an electronic transition at a rate known as the vacuum Rabi frequency Omega(R). For Omega(R) approaching the resonance frequency omega(c) novel quantum phenomena including squeezed states, Dicke super radiant phase transitions, the collapse of the Purcell effect, and a population of the ground state with virtual photon pairs are predicted. Yet, the experimental realization of optical systems with Omega(R)/omega(c) >= 1 has remained elusive. Here, we introduce a paradigm change in the design of light matter coupling by treating the electronic and the photonic components of the system as an entity instead of optimizing them separately. Using the electronic excitation to not only boost the electronic polarization but furthermore tailor the shape of the vacuum mode, we push Omega(R)/omega(c) of cyclotron resonances ultrastrongly coupled to metamaterials far beyond unity. As one prominent illustration of the unfolding possibilities, we calculate a ground state population of 0.37 virtual photons for our best structure with Omega(R)/omega(c) = 1.43 and suggest a realistic experimental scenario for measuring vacuum radiation by cutting-edge terahertz quantum detection.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CIRCUIT QUANTUM ELECTRODYNAMICS; SEMICONDUCTOR MICROCAVITY; PHASE-TRANSITION; PHOTON; CAVITY; FIELD; MODEL; Quantum electrodynamics; ultrastrong coupling; terahertz; metamaterials |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:19 |
| Last Modified: | 20 Feb 2019 10:56 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2105 |
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