Sökresultat

https://www.lu.se/forskning/forskningsinfrastruktur/max-iv - 2026-10-08

Using an eight-band k . p model Hamiltonian with the Burt-Foreman envelope function theory, we have investigated the optical absorption of both linearly and circularly polarized light, as well as related phenomena in InAs/GaSb broken-gap quantum wells grown along the [0 0 1] direction, with emphasis on the effects of electron-hole hybridization and the various symmetry-breaking mechanisms such as

High-dimensional systems are an important frontier for photonic quantum correlation experiments. These correlation tests commonly prescribe measurements with many possible outcomes but they are often implemented through many individual binary-outcome measurements that use only a single-detector. Here, we discuss how this binarization procedure for multioutcome measurements can open a loophole, unl

https://www.lu.se/studera/kemi-molekylar-kvantmekanik-KEMM58 - 2026-10-08

Nyheter | Filosofiska institutionen Alla nyheter 9 maj 2019 Ny rapport av Jana Holsanova: ”Bildbeskrivning för tillgänglighet – riktlinjer, forskning och praktik” Jana Holsanova har publicerat rapporten ”Bildbeskrivning för tillgänglighet – riktlinjer, forskning och praktik” 9 maj 2019 Mycket hjärna – en ny podd om forskning kring lärande 17 april 2019 Filosofiska rummet om skam 9 april 2019 Thora

https://www.fil.lu.se/institutionen/nyheter/ - 2026-10-08

Summary. Previous data have shown an inter-individual difference in the thrombin generating capacity in vitro as well as phenotypic bleeding pattern among patients with severe haemophilia A (FVIII:C activity below 1%). The reason for this is not known. In addition, there are no reports on how thrombin generation may correlate between siblings. In this study, we evaluated and compared thrombin gene

The optical spectra of a quantum cascade laser structure under nonequilibrium conditions is studied using the technique of nonequilibrium Green functions. We focus on the impact of Coulomb corrections and their dependence on the operating conditions. The role of the static mean field due to the charge distribution by electrons and ioninzed donors is investigated.

The authors demonstrate operation of a charge readout scheme for quantum dots in a semiconductor nanowire using a quantum point contact defined in a GaAs/AlGaAs two-dimensional electron gas beneath the nanowire. The quantum dots were fabricated by epitaxial growth of InP barriers along a n-type InAs nanowire. Applying negative voltages to two split-gate electrodes aligned to the nanowire induces a

Surface states and traps play an important role in the photophysics of colloidal quantum dots. These states typically lead to large red-shifted photoluminescence. We have used steady-state and time-resolved spectroscopic techniques to investigate the nature of the traps and their lifetimes in colloidal CdSe quantum dots. We conclude that at least two different types of traps contribute to the phot

We study the ground-state properties of a quasi-two-dimensional Bose Einstein condensate of indirect excitons, which are confined in an anisotropic harmonic potential. Incorporating the interactions, we calculate the order parameter variationally. The difficulties in the detection of a Bose-Einstein condensate are also discussed, along with possible ways which would overcome them.

We investigate universal properties of strongly confined particles that turn out to be dramatically different from what is observed for electrons in atoms and molecules. For a large class of harmonically confined systems, such as small quantum dots and optically trapped atoms, many-body particle addition and removal energies, and energy gaps, are accurately obtained from single-particle eigenvalue

The two main design schemes for Terahertz quantum cascade lasers, based on tunnelling and scattering injection, respectively, are theoretically compared. We apply our simulation package based on the non-equilibrium Green’s function technique. Our results provide a good description of the gain degradation with temperature. Thermal backfilling contributes to decrease of population inversion in both

Quantum effects at the nanoscale offer significant potential for future device technologies. A quantum dot heat engine, for instance, is able to convert heat into electrical current. This thesis investigates the transport properties and current fluctuations in a single-level quantum dot heat engine operating in the sequential tunneling regime. Based on the existing experimental data, both the curr

Tillsammans med industrin utvecklar vi nya idéer inom material, tillverkning och materialåtervinning. Målet är att hitta lösningar som både ser till miljön och stärker företagens konkurrenskraft. Industrin förbrukar cirka en tredjedel av Sveriges energi och mycket av miljöbelastningen av vår konsumtion kommer från material som finns i bruksprodukter som exempelvis redskap, hushållsmaskiner och for

https://www.lu.se/forskning/fokusomraden/strategiska-forskningsomraden/hallbar-produktion - 2026-10-07

In this paper, a novel detection scheme for the monitoring of insect ecosystems is presented. Our method is based on the remote acquisition of passive sunlight scattering by two insect species. Procedures to identify rare events in remote dark-field spectroscopy are explained. We further demonstrate how to reduce the spectral representation, and how to discriminate between sexes, using a hierarchi

25 november 2025 19:00 till 26 november 2025 10:00 | Seminarium CONCERT: Tuesday, 25 November 2025, at 19:00Programme:Salvatore Sciarrino (*1947): L’addio a Trachis (trascr. for guitar by Francesco Palmieri) [1980/2021]Luciano Berio (1925–2003): Sequenza XI (for guitar) [1988]Marco Momi (*1978): Sans dire (for guitar & electronics) [2021]Marco Momi: Quattro nudi (for e-guitar & electronics) [2014/

https://www.lu.se/evenemang/50-phd-seminar-concert-francesco-palmieri - 2026-10-08

This paper presents a few case studies of finite electron systems for which strong correlations play a dominant role. In simple metal clusters, the valence electrons determine the stability and shape of the clusters. The ionic skeleton of alkali metals is soft, and cluster geometries are often solely determined by electron correlations. In quantum dots and rings, the electrons may be confined by a

We harness the complex mixing process inside a commercial multi-mode fibre to program high-dimensional linear optical circuits for photonic qudits encoded in transverse space and time-of-arrival, and demonstrate their use for high-dimensional entanglement certification.