Topic
Optical microcavity
About: Optical microcavity is a research topic. Over the lifetime, 2599 publications have been published within this topic receiving 72125 citations. The topic is also known as: optical microcavities.
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TL;DR: In this article, the authors demonstrate an electrically pumped exciton-polariton emission, the first device in which strongly coupled states of light and matter are electrically excited.
Abstract: The strong coupling limit of cavity QED is reached when matter inserted inside a microcavity exchanges energy with the resonant mode of the cavity more rapidly than the combined rate at which light leaves the cavity and the matter wave function loses its phase information [1,2]. In this limit, the microcavity and matter form a composite quantum system with two new eigenstates that are superpositions of the initial uncoupled states, with new eigenenergies separated in energy by the Rabi splitting. The matter component of the coupled system can be a gas of atoms trapped inside the cavity [3], a superconducting qubit [4], or a solid state thin film containing excitons, in the form of an inorganic quantum well [5], quantum dot [6,7], or organic material [8], in which case the superposition states are referred to as exciton polaritons. Applications of strong coupling in atomic and semiconductor systems have led to one-atom zero threshold lasers [9], high gain polariton parametric amplifiers [10], and predictions that strong coupling may play a key role in future quantum information processors [11]. These experiments have all relied on optical pumping. Here we demonstrate electrically pumped exciton-polariton emission, the first device in which strongly coupled states of light and matter are electrically excited. The matter component of our device is a 6 � 1n mthick film of J aggregated dye. The film consists of 4 bilayers [12] of the cationic polyelectrolyte PDAC (poly diallyldimethylammonium chloride) and J aggregates of the anionic cyanine dye TDBC (5,6-dichloro-2-[3-[5,6-dichloro-1-ethyl-3-(3-sulfopropyl)-2(3H)-benzimidazolidene]-1-propenyl]-1-ethyl-3-(3-sulfopropyl) benzimidazolium hydroxide, inner salt, sodium salt), molecular structures shown in Fig. 1(a). The J aggregates are crystallites of dye in which the transition dipoles of the constituent molecules strongly couple to form a collective narrow linewidth optical transition possessing oscillator strength derived from all the aggregated monomers [13]. The bilayer films contain a high density of J aggregated TDBC and therefore have a very large peak absorption
201 citations
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TL;DR: An optical microcavity structure was introduced into organic three-layer electroluminescent (EL) diodes with a europium complex as an emission layer.
Abstract: An optical microcavity structure was introduced into organic three‐layer electroluminescent (EL) diodes with a europium complex as an emission layer. The device structure consisted of a dielectric reflector composed of SiO2/TiO2 bilayers, an indium‐tin‐oxide electrode, a hole transport layer, a europium complex as an emission layer, an electron transport layer, and a MgAg electrode. The dielectric reflector and the MgAg metal electrode constituted a planer microcavity. Sharply directed emission from the europium complex was observed when operated under dc drive voltage. Both angular dependences of intensity of emitted light and emission spectra of the EL diodes with the microcavity were compared with those of conventional EL diodes without microcavity.
197 citations
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TL;DR: The longevity of atomic motional coherence allows for strongly nonlinear optics at extremely low cavity photon numbers, as demonstrated by the observation of both branches of optical bistability at photon numbers below unity.
Abstract: We report on Kerr nonlinearity and dispersive optical bistability of a Fabry-Perot optical resonator due to the displacement of ultracold atoms trapped within. In the driven resonator, such collective motion is induced by optical forces acting upon up to 10(5) 87Rb atoms prepared in the lowest band of a one-dimensional intracavity optical lattice. The longevity of atomic motional coherence allows for strongly nonlinear optics at extremely low cavity photon numbers, as demonstrated by the observation of both branches of optical bistability at photon numbers below unity.
197 citations
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TL;DR: In this article, a planar photonic crystal microcavity design specially tailored for cavity quantum electrodynamics with a single quantum dot emitter embedded in semiconductor is proposed.
Abstract: We propose a planar photonic crystal microcavity design specially tailored for cavity quantum electrodynamics with a single quantum dot emitter embedded in semiconductor With quality factor up to 45 000, mode volume smaller than a cubic optical wavelength in material, and electric field maximum located in the high-refractive index region at the cavity center, this design can enable both strong coupling and lasing with a single quantum dot exciton The achievable range of the quality factor to mode volume ratios and the feasible fabrication of the proposed structure make it favorable to other semiconductor microcavities
186 citations
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TL;DR: In this article, the effect of exciton-phonon interactions on reversible quantum dot cavity coupling was analyzed without making a Born-Markov approximation, based on a polaron operator technique that has been used to study the spin-boson Hamiltonian.
Abstract: A quantum dot strongly coupled to a single high-finesse optical microcavity mode constitutes a new fundamental system for quantum optics. Here, the effect of exciton-phonon interactions on reversible quantum dot cavity coupling is analyzed without making a Born-Markov approximation. The analysis is based on a polaron operator technique that has been used to study the ``spin-boson'' Hamiltonian. For bulk acoustic phonons and for a large class of confined phonon models, we find that vacuum-Rabi splitting persists even in the presence of a large Stokes shift and at an appreciable temperature, but its magnitude is exponentially suppressed by the electron-phonon coupling strength.
185 citations