Zobrazeno 1 - 10
of 688
pro vyhledávání: '"Levinsen J"'
We develop a microscopic theory for excitons and exciton polaritons in transition metal dichalcogenide (TMD) monolayers under a perpendicular static magnetic field. We obtain numerically exact solutions for the ground and excited states, accounting f
Externí odkaz:
http://arxiv.org/abs/2410.00783
Publikováno v:
Phys. Rev. A 109, 033318 (2024)
We study the Fermi polaron problem with dipolar fermions in a bilayer geometry, where a single dipolar particle in one layer interacts with a Fermi sea of dipolar fermions in the other layer. By evaluating the polaron spectrum, we obtain the appearan
Externí odkaz:
http://arxiv.org/abs/2401.13228
Publikováno v:
Phys. Rev. B 108, 125406 (2023)
We study systematically the role of temperature in the optical response of doped two-dimensional semiconductors. By making use of a finite-temperature Fermi-polaron theory, we reveal a crossover from a quantum-degenerate regime with well-defined pola
Externí odkaz:
http://arxiv.org/abs/2212.05635
Publikováno v:
Phys. Rev. Lett. 131, 106901 (2023)
We present a quantum virial expansion for the optical response of a doped two-dimensional semiconductor. As we show, this constitutes a perturbatively exact theory in the high-temperature or low-doping regime, where the electrons' thermal wavelength
Externí odkaz:
http://arxiv.org/abs/2212.05627
Effect of fermion indistinguishability on optical absorption of doped two-dimensional semiconductors
Publikováno v:
Phys. Rev. B 105, 125404 (2022)
We study the optical absorption spectrum of a doped two-dimensional semiconductor in the spin-valley polarized limit. In this configuration, the carriers in the Fermi sea are indistinguishable from one of the two carriers forming the exciton. Most no
Externí odkaz:
http://arxiv.org/abs/2109.12994
Autor:
Meister A., Balasis-Levinsen J., Keller K., Pedersen M. R. V., Merryman Boncori J. P., Jensen M.
Publikováno v:
Journal of Geodetic Science, Vol 14, Iss 1, Pp pp. 3293-6 (2024)
Compact active transponders (CATs) – also termed electronic corner reflectors – are compact electronic devices designed to receive, actively amplify and re-transmit a radar signal, e.g. a C-band radar signal received from a Sentinel-1 satellite.
Externí odkaz:
https://doaj.org/article/7073cd5998e843f497a67f7201a7ba18
Publikováno v:
Phys. Rev. Research 2, 043185 (2020)
We investigate the interactions between exciton-polaritons in N two-dimensional semiconductor layers embedded in a planar microcavity. In the limit of low-energy scattering, where we can ignore the composite nature of the excitons, we obtain exact an
Externí odkaz:
http://arxiv.org/abs/2004.01336
Publikováno v:
Phys. Rev. Research 2, 023089 (2020)
We investigate the phases of two-dimensional electron-hole systems strongly coupled to a microcavity photon field in the limit of extreme charge imbalance. Using variational wave functions, we examine the competition between different electron-hole p
Externí odkaz:
http://arxiv.org/abs/1911.08808
Publikováno v:
Phys. Rev. A 101, 022707 (2020)
The orbital Feshbach resonance (OFR) is a novel scheme for magnetically tuning the interactions in closed-shell fermionic atoms. Remarkably, unlike the Feshbach resonances in alkali atoms, the open and closed channels of the OFR are only very weakly
Externí odkaz:
http://arxiv.org/abs/1908.04495
Autor:
Estrecho, E., Gao, T., Bobrovska, N., Comber-Todd, D., Fraser, M. D., Steger, M., West, K., Pfeiffer, L. N., Levinsen, J., Parish, M. M., Liew, T. C. H., Matuszewski, M., Snoke, D. W., Truscott, A. G., Ostrovskaya, E. A.
Publikováno v:
Phys. Rev. B 100, 035306 (2019)
Bosonic condensates of exciton polaritons (light-matter quasiparticles in a semiconductor) provide a solid-state platform for studies of non-equilibrium quantum systems with a spontaneous macroscopic coherence. These driven, dissipative condensates t
Externí odkaz:
http://arxiv.org/abs/1809.00757