Intersubband Polariton-Polariton Scattering in a Dispersive Microcavity

Knorr, Matthias; Manceau, Jean‐Michel; Mornhinweg, Joshua; Nespolo, Jacopo; Biasiol, G.; Tran, Ngoc-Linh; Malerba, Mario; Goulain, P.; Lafosse, Xavier; Jeannin, Mathieu; Stefinger, M.; Carusotto, Iacopo; Lange, Christoph; Colombelli, R.; Huber, Rupert

doi:10.1103/physrevlett.128.247401

Cited by 18 publications

(11 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As such, it keeps giving an important contribution to the nonlinearity of the ISB response to strong electromagnetic fields [33]. This implies that our results are directly applicable to the on-going quest of developing ISB polaritonic devices with strong optical non-linearities and polariton lasers, where a reduced polariton linewidth can be a game-changing improvement [10].…”

Section: Modelmentioning

confidence: 59%

“…In combination with higher-Q cavity configurations, our proposal has the potential to lead to polariton devices with unprecedented performances. Based on available experimental evidence, we anticipate that a narrower polariton linewidth will be a game-changing step in view of technological applications of intersubband polaritons, including nonlinear polariton devices [33] and polariton lasing [10,16]. On a longer perspective, our proposal highlights intersubband polariton physics in the presence of magnetic fields as a novel arena where to study the interplay between light-matter interaction with quantum Hall physics [51][52][53][54][55][56][57].…”

Section: Discussionmentioning

confidence: 91%

“…cp is given in units of Tesla and ωqw in meV. The red hexagon and green circle mark the position of, respectively, typical THz [6,49,50] and MIR [10] devices.…”

Section: B Experimental Implementationsmentioning

confidence: 99%

“…This regime was experimentally achieved with ISB and other various solid-state platforms [3][4][5][6] and is of great interest for its strongly modified ground-state properties [7][8][9]. More in general, the large flexibility of ISB polaritons holds great promise for the study of a wide range of cavity quantum electrodynamics (cQED) effects from both a fundamental [7,[10][11][12] and an applied perspective [13][14][15]. Despite the great achievements reached using ISB polaritonic devices in both the mid-infrared and THz regime, a serious obstacle hindering a full development of this research program is caused by the relatively large linewidth of the ISB transition [16], mostly due to interface roughness of the semiconductor quantum well nanostructures [17].…”

mentioning

confidence: 99%

“…Appendix A: Input-output theory of the cavity plasma Hamiltonian in the weak excitation regime Consider the cavity-plasma Hamiltonian defined in Eq. (10). Since we are looking only at its low energy excitations we can truncate the electronic Hilbert space keeping only the unperturbed Fermi sea state |F S and its lowest single-electron-hole-pair excitations between the first two subbands, given by…”

mentioning

confidence: 99%

See 4 more Smart Citations

Magnetic-field-induced cavity protection for intersubband polaritons

Bernardis¹,

Jeannin²,

Manceau³

et al. 2022

Preprint

View full text Add to dashboard Cite

We analyse the effect of a strong perpendicular magnetic field on an intersubband transition in a disordered doped quantum well strongly coupled to an optical cavity. The magnetic field changes the lineshape of the intersubband optical transition due to the interface roughness of the quantum well from a Lorentzian to a Gaussian one. In this regime, a novel form of magnetic-field-induced cavity protection sets in, which strongly reduces the polariton linewidth to the cavity contribution only. Implications of our results for fundamental studies of nonlinear polariton dynamics and for technological applications to polariton lasers are finally highlighted.

show abstract

Section: Modelmentioning

confidence: 59%

Section: Discussionmentioning

confidence: 91%

“…cp is given in units of Tesla and ωqw in meV. The red hexagon and green circle mark the position of, respectively, typical THz [6,49,50] and MIR [10] devices.…”

Section: B Experimental Implementationsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Magnetic-field-induced cavity protection for intersubband polaritons

Bernardis¹,

Jeannin²,

Manceau³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

THz Ultra‐Strong Light–Matter Coupling up to 200 K with Continuously‐Graded Parabolic Quantum Wells

Goulain

Deimert

Jeannin

et al. 2023

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

new regime is attained-the strong coupling regime (SCR)-where light and matter exchange energy coherently and periodically. In the frequency domain, this leads to a radical change of the system's spectral response. From the first observation with Rydberg atoms, the SCR has been demonstrated in a plethora of systems spanning excitons, organic molecules, electronic transitions, superconducting qubits and many others. [2] The strength of the light-matter interaction is often gauged by a dimensionless parameter η that is the ratio between the coupling constant Ω R (also called the vacuum Rabi frequency) over the resonant transition frequency ω 0 . [3] Above a value η > 0.1, one enters the ultra-strong coupling (USC) regime where the diamagnetic terms of the interaction Hamiltonian start to play an important role, leading to a deviation from the linear approximation and the formation of a sizeable population of virtual photons in the ground state of the system. [4] The same foundational article by Ciuti et al. [4] also proposed that an abrupt modulation of the system ground state leads to a release of such virtual population as real photons, an approach that could lead to the development of non-classical light emitters at long-wavelengths. Continuously graded parabolic quantum wellswith excellent optical performances are used to overcome the low-frequency and thermal limitations of square quantum wells at terahertz (THz) frequencies. The formation of microcavity intersubband polaritons at frequencies as low as 1.8 THz is demonstrated, with a sustained ultra-strong coupling regime up to a temperature of 200 K. Thanks to the excellent intersubband transition linewidth, polaritons present quality factors up to 17. It is additionally shown that the ultra-strong coupling regime is preserved when the active region is embedded in subwavelength resonators, with an estimated relative strength η = Ω R /ω 0 = 0.12. This represents an important milestone for future studies of quantum vacuum radiation because such resonators can be optically modulated at ultrafast rates, possibly leading to the generation of non-classical light via the dynamic Casimir effect. Finally, with an effective volume of 2 10 6 0 3 λ × × − −, it is estimated that fewer than 3000 electrons per resonator are ultra-strongly coupled to the quantized electromagnetic mode, proving it is also a promising approach to explore few-electron polaritonic systems operating at relatively high temperatures.

show abstract

Ultra‐Narrow Linewidth Polariton Lasing in Optically Trapped Bose‐Einstein Condensates at Room Temperature

Wang,

Zhou,

Zhang

et al. 2024

Laser & Photonics Reviews

View full text Add to dashboard Cite

Polariton lasing via Bose‐Einstein condensation (BEC) provides a peculiar method to achieve low threshold coherent light sources. Until now, the cryogenic operating temperature required for polariton lasers has hampered the development of polaritonics. Here, a novel approach is first reported to realize the ultra‐narrow linewidth polariton lasing under quasi‐3D quantum confinement at room‐temperature (RT). The potential trap landscape is constructed by ring‐shaped optical excitation, wherein the continuum polariton dispersion is modulated into discrete simple harmonic oscillator (SHO) states. The coherent condensation lasing of trapped polaritons occurs beyond the threshold power. Benefiting from the horizontal quantum confinement, the trapped polariton lasing exhibits an ultra‐narrow linewidth (0.7 meV) and excellent quality factor (Q = 3510). Moreover, the second‐order quantum coherence properties of trapped polariton condensation are determined to reveal the quantum phase transition of Bosonic system. The results offer a feasible route for realizing a low‐threshold ultra‐narrow linewidth polariton laser at RT, which significantly facilitates the fabrication of polariton laser and switches on opportunities for future applications.

show abstract

Intersubband Polariton-Polariton Scattering in a Dispersive Microcavity

Cited by 18 publications

References 53 publications

Magnetic-field-induced cavity protection for intersubband polaritons

Magnetic-field-induced cavity protection for intersubband polaritons

THz Ultra‐Strong Light–Matter Coupling up to 200 K with Continuously‐Graded Parabolic Quantum Wells

Ultra‐Narrow Linewidth Polariton Lasing in Optically Trapped Bose‐Einstein Condensates at Room Temperature

Contact Info

Product

Resources

About