Semiclassical study of intersubband cavity polaritons: Role of plasmonic and radiative coupling effects

Załużny, M.; Ziętkowski, W.

doi:10.1103/physrevb.88.195408

Cited by 9 publications

(12 citation statements)

References 62 publications

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“…Since their first observation in 2003 [1,2], ICPs have been studied extensively in terms of their dispersion properties [3], electron dynamics [4,5], ultrafast light-matter phenomena [6], quantum field characteristics [7], and for the generation of entangled photons [8]. Furthermore, ICPs offer the possibility of creating terahertz light emitters, presenting an alternative to laser-based terahertz sources which face fundamental limits at room temperature [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Linewidth-narrowing phenomena with intersubband cavity polaritons

et al. 2014

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/npsi/ctrl?action=rtdoc&an=21272730&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21272730&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions?Contact the NRC Publications Archive team at PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1103/PhysRevB.89.205319 Physics, 89, 20, pp. 1-5, 2014-05-30 Absorption spectra of strongly coupled intersubband cavity polaritons have been measured, using a tunable midinfrared quantum cascade laser, with high angular and spectral resolution. Pronounced linewidth narrowing of the polaritons around the anticrossing was found, with polariton linewidths narrower (4.2 meV) than both the bare intersubband transition linewidth and empty cavity linewidth (6.2 and 6 meV, respectively), at room temperature. This is due to variations in the degree of spatial averaging of the in-plane quantum-well disorder as the polariton's extended coherence length is increased by the photonic coupling over the value corresponding to the bare intersubband transition coherence length. Physical Review B -Condensed Matter and Materials

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Section: Introductionmentioning

confidence: 99%

Linewidth-narrowing phenomena with intersubband cavity polaritons

et al. 2014

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“…(30) that this equation is satisfied term by term with respect to the sum over all possible electronic transitions in Eq. (31), each term oscillating at the frequency of the transition ω kqij . When we consider the subspace of bosonized excitation, this equation is also valid for the total Hamiltonian from Eq.…”

Section: B Polarization Field Operator Of the Two-dimensional Electrmentioning

confidence: 99%

“…(23) and (25)] and the charge density operatorρ [Eq. (31)] in terms of bosonized operators b † kqα , b kqα , d † kqi , and d kqi . Using this form of the charge density operator, it can be readily shown that it commutes with the square-polarization interaction terms from Eq.…”

Section: B Polarization Field Operator Of the Two-dimensional Electrmentioning

confidence: 99%

“…III, we study the transverse interaction of the collective electronic excitations with the guided modes of a planar metallic waveguide and we describe the corresponding coupled polariton modes. In particular, we discuss the possibility to assign a local dielectric function that describes the propagation of polaritons, a problem that has been discussed so far in semiclassical approaches [27][28][29][30][31][32]. In the final part of Sec.…”

Section: Introductionmentioning

confidence: 99%

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Dipolar quantum electrodynamics of the two-dimensional electron gas

Todorov

2015

Phys. Rev. B

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Similarly to a previous work on the homogeneous electron gas [Y. Todorov, Phys. Rev. B 89, 075115 (2014)], we apply the Power-Zienau-Wooley (PZW) formulation of the quantum electrodynamics to the case of an electron gas quantum confined by one-dimensional potential. We provide a microscopic description of all collective plasmon modes of the gas, oscillating both along and perpendicular to the direction of quantum confinement. Furthermore, we study the interaction of the collective modes with a photonic structure, planar metallic waveguide, by using the full expansion of the electromagnetic field into normal modes. We show how the boundary conditions for the electromagnetic field influence both the transverse light-matter coupling and the longitudinal particleparticle interactions. The PZW descriptions appear thus as a convenient tool to study semiconductor quantum optics in geometries where quantum-confined particles interact with strongly confined electromagnetic fields in microresonators, such as the ones used to achieve the ultrastrong light-matter coupling regime.

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“…Particularly, the energy exchange between electrons in QW and a confined electromagnetic field in a microcavity leads to the oscillating transitions between different electron subbands in QW. These periodical optical transitions of electrons can be described formally as a composite electron-photon quasi-particle called "intersubband polariton" [24][25][26][27][28][29][30][31] . Immediately after experimental discovery of the intersubband polaritons, they attracted great attention of research community.…”

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confidence: 99%

Effect of a magnetic field on intersubband polaritons in a quantum well: strong to weak coupling conversion

Pervishko

Shelykh

2016

Opt. Lett.

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We investigate theoretically the effect of a magnetic field on intersubband polaritons in an asymmetric quantum well placed inside an optical resonator. It is demonstrated that the field-induced diamagnetic shift of electron subbands in the well increases the broadening of optical lines corresponding to intersubband electron transitions. As a consequence, the magnetic field can switch the polariton system from the regime of strong light-matter coupling to the regime of weak one. This effect paves a way to the effective control of polaritonic devices with a magnetic field.In recent decades, the significant technological progress in fabrication of optical resonators (microcavities) with high quality factor was achieved. This led to both experimental and theoretical development of the concept of strong light-matter coupling, which covers various electron-photon processes accompanying by the oscillatory energy exchange between an electromagnetic field confined in a microcavity and electrons in condensedmatter structures placed inside the microcavity 1-12 . Currently, the regime of strong light-matter coupling has been realized experimentally in a variety of condensedmatter structures, including quantum wells (QWs)13-15 , quantum dots [16][17][18] , quantum wires 19-23 , and others. Particularly, the energy exchange between electrons in QW and a confined electromagnetic field in a microcavity leads to the oscillating transitions between different electron subbands in QW. These periodical optical transitions of electrons can be described formally as a composite electron-photon quasi-particle called "intersubband polariton" [24][25][26][27][28][29][30][31] . Immediately after experimental discovery of the intersubband polaritons, they attracted great attention of research community. This was caused by their unique physical properties which meet the needs of various modern optoelectronic devices operating in a wide frequency range from infrared to terahertz domains, including quantum cascade lasers 32,33 , light emitting devices 34-36 and photodetectors 37 . In order to control the devices, the frequency tuning of intersubband polariton should be elaborated. Currently, the tuning is realized with the control of light-matter coupling constant by the electrical gating applied to QW 38,39 . In the present study, we propose the alternative method of the frequency tuning by an external magnetic field. In what follows, we will show theoretically that the magnetic field can effectively control the intersubband polaritons by switching the electron-photon system in QW from the regime of strong light-matter coupling to the weak one.Generally, the regime of strong light-matter coupling is realized when the coherent light-matter interaction overcomes the characteristic damping. In this regime, the energy is periodically exchanged between the "light part" and "matter part" of the light-matter system with the Rabi frequency, Ω R , which is given by the expressionwhere g R is the characteristic light-matter coupling constant, and Γ is...

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Semiclassical study of intersubband cavity polaritons: Role of plasmonic and radiative coupling effects

Cited by 9 publications

References 62 publications

Linewidth-narrowing phenomena with intersubband cavity polaritons

Linewidth-narrowing phenomena with intersubband cavity polaritons

Dipolar quantum electrodynamics of the two-dimensional electron gas

Effect of a magnetic field on intersubband polaritons in a quantum well: strong to weak coupling conversion

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