Dephasing of Triplet-Sideband Optical Emission of a Resonantly Driven<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>InAs</mml:mi><mml:mo>/</mml:mo><mml:mi>GaAs</mml:mi></mml:math>Quantum Dot inside a Microcavity

Ulrich, S.; Ateş, Serkan; Reitzenstein, Stephan; Löffler, Andreas; Forchel, A.; Michler, Peter

doi:10.1103/physrevlett.106.247402

Cited by 156 publications

(189 citation statements)

References 27 publications

(34 reference statements)

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“…The full width at half maximum (FWHM) of the resonance is about 0.7 GHz. Although in four-wave mixing studies the zero-phonon linewidth has been shown to be limited by radiative decay to about 170 MHz 12,13 , PL linewidths and/or resonantly measured single QD excitation linewidths are usually found to lie in the range of 500 MHz to several GHz [5][6][7][8][9][10][11]17,[19][20][21] . The additional "apparent" broadening is due to spectral diffusion, a process by which the QD transition frequency is randomly shifted during the measurement 17 .…”

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confidence: 99%

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Coherent versus incoherent light scattering from a quantum dot

et al. 2012

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We analyze the light scattered by a single InAs quantum dot interacting with a resonant continuous-wave laser. High resolution spectra reveal clear distinctions between coherent and incoherent scattering, with the laser intensity spanning over four orders of magnitude. We find that the fraction of coherently scattered photons can approach unity under sufficiently weak or detuned excitation, ruling out pure dephasing as a relevant decoherence mechanism. We show how spectral diffusion shapes spectra, correlation functions, and phase-coherence, concealing the ideal radiativelybroadened two-level system described by Mollow.

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confidence: 99%

“…(2) with s/2π=0.7 GHz, chosen to coincide with the measured excitation linewidth of Fig. 1(c) which is also typical for InAs QDs [5][6][7][8][9][10][11]17,[19][20][21]23 . In comparison, Fig.…”

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confidence: 99%

Coherent versus incoherent light scattering from a quantum dot

et al. 2012

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“…The resonance spectrum consists of a single spectral line below saturation of a quantum emitter which develops into a triplet at powers above saturation of the emitter [1][2][3]. The spectral properties of the triplet strongly depends on pump power [4,5] and detuning of the excitation laser. The three closely spaced photon channels from the resonance fluorescence have different photon statistical signatures [6].…”

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confidence: 99%

Cascaded single-photon emission from the Mollow triplet sidebands of a quantum dot

et al. 2012

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1Emission from a resonantly excited quantum emitter is a fascinating research topic within quantum optics and a useful source for different types of quantum light fields. The resonance spectrum consists of a single spectral line below saturation of a quantum emitter which develops into a triplet at powers above saturation of the emitter [1][2][3]. The spectral properties of the triplet strongly depends on pump power [4,5] and detuning of the excitation laser. The three closely spaced photon channels from the resonance fluorescence have different photon statistical signatures [6]. We present a detailed photon-statistics analysis of the resonance fluorescence emission triplet from a solid state-based artificial atom, i.e. a semiconductor quantum dot. The photon correlation measurements demonstrate both 'single' and 'heralded' photon emission from the Mollow triplet sidebands [6]. The ultra-bright and narrowband emission (5.9 MHz into the first lens) can be conveniently frequency-tuned by laser detuning over 15 times its linewidth (∆ν ≈ 1.0 GHz). These unique properties make the Mollow triplet sideband emission a valuable light source for, e.g.quantum light spectroscopy and quantum information applications [7].Generation of non-classical light fields like single-, entangled-and heralded-photons form a vital part of many schemes of quantum information and computation. Atom optics demonstrated the heralded emission of single photons using resonance fluorescence from single atoms [8] and from cold atoms in a cavity [9]. Currently most of the heralded photon schemes use sources based on parametric down conversion [10]. Recently, there has been important developments in fiber-based heralded photon sources using four-wave mixing [11].Both of these techniques present Poissonian statistics with photon bandwidths usually larger than 100 GHz. The increased two-photon yield in these photon sources is at the expense of fidelity. Semiconductor QDs have demonstrated single- [12], entangled- [13,14] and heralded-photon sources [15] but mostly under non-resonant excitation schemes. Though, coherent excitation conditions of those quantum emitters are an important precondition since these promise to minimize most of the dephasing caused by the non-resonant, i.e. incoherent processes [7]. Coherent control of QD excitons has been demonstrated in a variety of experiments exhibiting Rabi splitting [16], Rabi oscillations [17], and resonant absorption [18,19]. Observations of oscillations in the first-order correlation [20], charac-2 teristic emission spectra in the frequency domain [21], and oscillations of the second-order photon correlation function [2] were all measured directly on the resonance emission from the QD. In particular, single-photon emission from a single fluorescence line (below the emitter saturation) along with photon indistinguishability as high as 90% was demonstrated [3]. Also the AC Stark shift of an exciton was used to bring the initially split QD exciton components into resonance with each other, thus forming a ...

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“…In the case of strong light-matter coupling there is a strong interplay between exciton-phonon and light-matter interaction, which for example can be seen in the line-width broadening in the Mollow-Triplet [180,102]. The combined exciton-photon and exciton-phonon interaction in the strong coupling regime has been subject to many theoretical works [181,58,87,90,95,88,89,128,182,91].…”

Section: Rabi Rotationsmentioning

confidence: 99%

“…Also for dots in cavities phonons can play a decisive role, e.g., for the dephasing [87,88,89,90,91], the photon statistics [92,58,93,94], the indistinguishability of photons [95] as well as for providing a dot-cavity coupling in the case of non-resonant QD and cavity modes where phenomena like off-resonant cavity feeding have been found [96,82,97,98,99,100,101,102]. Although such systems are not at the focus of the present review, we note in passing that in this case, additional relaxation mechanisms, in particular cavity losses, may become of importance.…”

Section: Quantum Dot Modelmentioning

confidence: 99%

The role of phonons for exciton and biexciton generation in an optically driven quantum dot

Reiter

Kuhn

Glässl

et al. 2014

J. Phys.: Condens. Matter

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Abstract. For many applications of semiconductor quantum dots in quantum technology a well controlled state preparation of the quantum dot states is mandatory. Since quantum dots are embedded in the semiconductor matrix, the interaction with phonons plays often a major role in the preparation process. In this review, we discuss the influence of phonons on three basically different optical excitation schemes which can be used for the preparation of exciton, biexciton, and superposition states: a resonant excitation leading to Rabi rotations in the excitonic system, an excitation with chirped pulses exploiting the effect of adiabatic rapid passage, and an off-resonant excitation giving rise to a phononassisted state preparation. We give an overview over experimental and theoretical results showing the role of the phonons and compare the performance of the schemes for state preparation.

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Dephasing of Triplet-Sideband Optical Emission of a Resonantly DrivenInAs/GaAsQuantum Dot inside a Microcavity

Cited by 156 publications

References 27 publications

Coherent versus incoherent light scattering from a quantum dot

Coherent versus incoherent light scattering from a quantum dot

Cascaded single-photon emission from the Mollow triplet sidebands of a quantum dot

The role of phonons for exciton and biexciton generation in an optically driven quantum dot

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