Laser oscillation in a strongly coupled single-quantum-dot–nanocavity system

Nomura, Masahiro; Kumagai, Naoto; Iwamoto, Satoshi; Ota, Yasutomo; Arakawa, Yasuhiko

doi:10.1038/nphys1518

Cited by 337 publications

(311 citation statements)

References 34 publications

(45 reference statements)

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“…The extremely narrow optical resonances in these high-Q cavities allowed us to observe strong QD-cavity coupling with high visibilities. We believe that our work paves the way towards a generation of QD-micropillar devices operated in the strong coupling regime relying on distinct polariton features, such as optically or electrically driven single QD lasers in the strong coupling regime [32] or deterministic sources of indistinguishable single photons generated via the adiabatic Raman passage [35]. Furthermore, we believe that the ultra-high quality factors in conjunction with strongly coupled QD emitters, which we demonstrate in this work, will play a key role in the development of deterministic spin-photon interfaces and quantum non demolition read out schemes, as predicted in [34] and experimentally indicated in [15].…”

Section: Resultsmentioning

confidence: 92%

Quantum dot micropillar cavities with quality factors exceeding 250,000

et al. 2016

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Abstract:We report on the spectroscopic investigation of quantum dot -micropillar cavities with unprecedented quality factors. We observe a pronounced dependency of the quality factor on the measurement scheme, and find that significantly larger quality factors can be extracted in photoreflectance compared to photoluminescence measurements. While the photoluminescence spectra of the microcavity resonances feature a Lorentzian lineshape and Q-factors up to 184,000 (±10,000), the reflectance spectra have a Fano-shaped asymmetry and feature significantly higher Q-factors in excess of 250,000 resulting from a full saturation of the embedded emitters. The very high quality factors in our cavities promote strong light-matter coupling with visibilities exceeding 0.5 for a single QD coupled to the cavity mode.

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Section: Resultsmentioning

confidence: 92%

Quantum dot micropillar cavities with quality factors exceeding 250,000

et al. 2016

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“…Rabi splitting (VRS) should occur under on-resonant conditions are expected to occur naturally, analogous to the atomic systems in cavity QED [89]. However, experimental reports have shown clear deviations from these features.…”

Section: Figmentioning

confidence: 99%

“…Recently, such a coupled system consisting of a nanocavity and a QD shown in Fig. 4(c) has been further extensively investigated because of its promising applications such as quantum information processing [4,[83][84][85][86], single photon sources [1,81,85], and ultimately low-threshold nanolasers [78,80,[86][87][88][89]. For such a single QD PhC nanocavity system, utilization of a single mode cavity with a sufficiently high Q factor as a lasing mode, the modal volume of which should be as small as possible to maximize the interaction with the single QD gain medium, is key to realize a thresholdless QD nanolaser.…”

Section: Figmentioning

confidence: 99%

Vertical-external-cavity surface-emitting lasers and quantum dot lasers

Shan¹,

Zhao²,

Hu³

et al. 2012

Front. Optoelectron.

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The use of cavity to manipulate photon emission of quantum dots (QDs) has been opening unprecedented opportunities for realizing quantum functional nanophotonic devices and also quantum information devices. In particular, in the field of semiconductor lasers, QDs were introduced as a superior alternative to quantum wells to suppress the temperature dependence of the threshold current in vertical-external-cavity surface-emitting lasers (VECSELs). In this work, a review of properties and development of semiconductor VECSEL devices and QD laser devices is given. Based on the features of VECSEL devices, the main emphasis is put on the recent development of technological approach on semiconductor QD VECSELs. Then, from the viewpoint of both single QD nanolaser and cavity quantum electrodynamics (QED), a single-QD-cavity system resulting from the strong coupling of QD cavity is presented. A difference of this review from the other existing works on semiconductor VECSEL devices is that we will cover both the fundamental aspects and technological approaches of QD VECSEL devices. And lastly, the presented review here has provided a deep insight into useful guideline for the development of QD VECSEL technology and future quantum functional nanophotonic devices and monolithic photonic integrated circuits (MPhICs).

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“…Due to the rapid development of semiconductor fabrication capabilities, the bared excitons can couple with the various types of photon modes that are confined in different semiconductor MCs, including the whispering-gallery mode in microtapers, 19 microwires 20 and microrods, 21 the waveguide mode in semiconductor nanowires, 22,23 the photonic crystal modes, [24][25][26] and the most-often used Fabry-Perot mode in planar MCs. 27 From a more realistic perspective, a planar MC is more easily fabricated and applied to electrical devices, making it a more attractive choice for future practical applications such as ultralow threshold polariton lasing.…”

Section: Progress Historymentioning

confidence: 99%

Strong light–matter interaction in ZnO microcavities

2013

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The strong light-matter interaction in ZnO-embedded microcavities has received great attention in recent years, due to its ability to generate the robust bosonic quasiparticles, exciton-polaritons, at or above room temperature. This review introduces the strong coupling effect in ZnO-based microcavities and describes the recent progress in this field. In addition, the report contains a systematic analysis of the room-temperature strong-coupling effects from relaxation to polariton lasing. The stable room temperature operation of polaritonic effects in a ZnO microcavity promises a wide range of practical applications in the future, such as ultra-low power consumption coherent light emitters in the ultraviolet region, polaritonic transport, and other fundamental of quantum optics in solid-state systems. Keywords: microcavity; polariton; strong coupling; ZnO INTRODUCTIONOver the past two decades, strong light-matter interactions in solidstate systems have garnered much attention for applications in novel photonics devices. The polariton is the key factor in the strong coupling phenomena: a new bosonic quasiparticle that is a hybrid between matter and light and exhibits promise for investigating various fascinating effects including dynamical Bose condensation, 1-4 superfluidity 5,6 and quantized vortices. 7-10 Semiconductor microcavities (MCs), which simultaneously offer good optical confinement with a small mode volume for the photonics portion and an excitonic layer for the matter portion of the strong coupling, are regarded as promising candidates for demonstrating and manipulating strong light-matter coupling in solid-state systems. 11 Because the semiconductor MCs undergo a strong coupling regime, the coupling rate between the bared exciton modes and the confined photon modes is faster than their dissipation rates. Compared with weakly coupled MCs, the rapid exchange rate in strongly coupled MCs renders the energy transfer between the excitons and photons reversible and reduces the possibility of energy dissipation through non-radiative channels, which results in a higher internal quantum efficiency. The new eigenstates generated from the strong exciton-photon coupling are called exciton-polaritons 12 and exhibit a relatively small effective mass compared with atomic hydrogen, tunable dispersion curves, and the bosonic statistics at low densities.Given the aforementioned properties, many phenomena have been extensively studied in polariton systems, including ultra-low threshold polariton lasing, 13 polariton parametric oscillation 14-17 and polaritonic circuits. 18 The matter characteristic of the polaritons allows them to scatter with electrons, phonons and polaritons, then to condense in the coherent ground state. The laser-like light emission from a coherent polariton ground state, the so-called polariton laser, does not require the population inversion condition required by conventional

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Laser oscillation in a strongly coupled single-quantum-dot–nanocavity system

Cited by 337 publications

References 34 publications

Quantum dot micropillar cavities with quality factors exceeding 250,000

Quantum dot micropillar cavities with quality factors exceeding 250,000

Vertical-external-cavity surface-emitting lasers and quantum dot lasers

Strong light–matter interaction in ZnO microcavities

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