Direct Visualization of Ultrastrong Coupling between Luttinger-Liquid Plasmons and Phonon Polaritons
Sign Up to like & getrecommendations! Published in 2022 at "Nano Letters"
DOI: 10.1021/acs.nanolett.1c04807
Abstract: Ultrastrong coupling of light and matter creates new opportunities to modify chemical reactions or develop novel nanoscale devices. One-dimensional Luttinger-liquid plasmons in metallic carbon nanotubes are long-lived excitations with extreme electromagnetic field confinement. They are… read more here.
Keywords: ultrastrong coupling; luttinger liquid; phonon polaritons; direct visualization ... See more keywords
Dicke-Cooperativity-Assisted Ultrastrong Coupling Enhancement in Terahertz Metasurfaces.
Sign Up to like & getrecommendations! Published in 2022 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c01892
Abstract: A system of N two-level atoms cooperatively interacting with a photonic field can be described as a single giant atom coupled to the field with interaction strength ∝N. This enhancement, known as Dicke cooperativity in… read more here.
Keywords: ultrastrong coupling; enhancement; terahertz; dicke cooperativity ... See more keywords
Spontaneous emission of Schrödinger cats in a waveguide at ultrastrong coupling
Sign Up to like & getrecommendations! Published in 2017 at "New Journal of Physics"
DOI: 10.1088/1367-2630/aa5dea
Abstract: Josephson circuits provide a realistic physical setup where the light–matter fine structure constant can become of order one, allowing to reach a regime dominated by non-perturbative effects beyond standard quantum optics. Simple processes, such as… read more here.
Keywords: ultrastrong coupling; spontaneous emission; emission schr; dinger cats ... See more keywords
Probing higher-order transitions through scattering of microwave photons in the ultrastrong-coupling regime of circuit QED
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.98.043803
Abstract: Higher-order transitions can occur in the ultrastrong-coupling regime of circuit QED through virtual processes governed by the counter-rotating interactions. We propose a feasible way to probe higher-order transitions through the scattering of propagating microwave photons… read more here.
Keywords: order transitions; ultrastrong coupling; higher order; regime circuit ... See more keywords
Breakdown of gauge invariance in ultrastrong-coupling cavity QED
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.98.053819
Abstract: We revisit the derivation of Rabi- and Dicke-type models, which are commonly used for the study of quantum light-matter interactions in cavity and circuit QED. We demonstrate that the validity of the two-level approximation, which… read more here.
Keywords: gauge invariance; gauge; ultrastrong coupling; breakdown gauge ... See more keywords
Ultrastrong coupling between a microwave resonator and antiferromagnetic resonances of rare-earth ion spins
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.101.214414
Abstract: Quantum magnonics is a new and active research field, leveraging the strong collective coupling between microwaves and magnetically ordered spin systems. To date work in quantum magnonics has focused on transition metals and almost entirely… read more here.
Keywords: ultrastrong coupling; earth ion; antiferromagnetic resonances; coupling microwave ... See more keywords
Quantum magnetomechanics: Towards the ultrastrong coupling regime
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.97.024109
Abstract: In this paper we investigate a hybrid quantum system comprising a mechanical oscillator coupled via magnetic induced electromotive force to an LC resonator. We derive the Lagrangian and Hamiltonian for this system and find that… read more here.
Keywords: towards ultrastrong; quantum; ultrastrong coupling; magnetomechanics towards ... See more keywords
Waveguide Quantum Optomechanics: Parity-Time Phase Transitions in Ultrastrong Coupling Regime.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.125.183601
Abstract: We develop a rigorous theoretical framework for interaction-induced phenomena in the waveguide quantum electrodynamics (QED) driven by mechanical oscillations of the qubits. Specifically, we predict that the simplest setup of two qubits, harmonically trapped over… read more here.
Keywords: waveguide quantum; parity time; ultrastrong coupling; waveguide ... See more keywords
Ultrastrong coupling in Super Yellow polymer microcavities and development of highly efficient polariton light-emitting diodes and light-emitting transistors.
Sign Up to like & getrecommendations! Published in 2023 at "Optics express"
DOI: 10.1364/oe.480278
Abstract: We present detailed studies on exciton-photon coupling and polariton emission based on a poly(1,4-phenylenevinylene) copolymer, Super Yellow (SY), in a series of optical microcavities and optoelectronic devices, including light-emitting diode (LED) and light-emitting transistor (LET).… read more here.
Keywords: ultrastrong coupling; polariton; emission; coupling super ... See more keywords
Gauge-independent emission spectra and quantum correlations in the ultrastrong coupling regime of open system cavity-QED
Sign Up to like & getrecommendations! Published in 2022 at "Nanophotonics"
DOI: 10.1515/nanoph-2021-0718
Abstract: Abstract A quantum dipole interacting with an optical cavity is one of the key models in cavity quantum electrodynamics (cavity-QED). To treat this system theoretically, the typical approach is to truncate the dipole to two… read more here.
Keywords: ultrastrong coupling; coupling regime; cavity qed; cavity ... See more keywords