Search results

This thesis describes experiments aimed at developing a key component in applications such as quantum networks and long-distance quantum communication systems: quantum memories. Quantum memories for light using photon-echo and coherent rephrasing techniques have been developed. The work is carried out on rare-earth-ion-doped inorganic crystals. Several properties are associated with these crystal

https://www.lu.se/studera/kemi-fysikalisk-kemi-masterprogram-NAKEM-FYKE - 2026-09-17

We have clarified the origin of a magnetically dead interface layer formed in yttrium iron garnet (YIG) films grown at above 700 °C onto a gadolinium gallium garnet (GGG) substrate by means of laser molecular beam epitaxy. The diffusion-assisted formation of a Ga-rich region at the YIG/GGG interface is demonstrated by means of composition depth profiling performed by x-ray photoelectron spectrosco

The information on this page is intended for people affected by the war in Ukraine who are considering applying to or continuing their studies at Lund University. We have summarised the main points with references to sources where you can find more information. Applying for studiesMaster's and Bachelor's studiesAs an applicant from Ukraine, you need to follow Lund University’s regular application

https://www.lunduniversity.lu.se/study/admission-information-those-affected-war-ukraine - 2026-09-17

We present an extension of the atomic frequency comb protocol that utilizes the Stark effect to perform noise-free, on-demand, control. An experimental realization of this protocol was implemented in the Pr3+:Y2SiO5 solid-state system, and a recall efficiency of 38% for a 0.8 μs storage time was achieved. Experiments were performed with both bright pulses as well as weak-coherent states, the latte

Popular Abstract in Swedish Att en temperaturskillnad kan ge upphov till en elektrisk ström upptäcktes redan på 1800-talet och fenomenet är känt som den termoelektriska effekten. Denna effekt skulle kunna effektivisera energianvändningen överallt där det går att utnyttja en temperaturskillnad. Ett exempel är i en bil där en stor del av energin som tillförs genom bränsle förloras som spillvärme. Om

We study tests of quantum steering in which the trusted party does not have perfect control of their measurements. We report on steering inequalities that remain unaffected when introducing up to a threshold magnitude of measurement imprecision. This phenomenon, which we call an imprecision plateau, thus permits a departure from the standard assumption of idealized measurements without incurring a

In 1935, Schrödinger noted that if one of two entangled particles is subjected to a suitable measurement, it appears as if the state of the other particle is instantaneously influenced at a distance. This phenomenon, which Schrödinger referred to as quantum steering, exhibits properties favorable for quantum information theory. Therefore, much research has been put into developing criteria to dete