Nonlinearity of quantum dot waveguide helps entangle photons

European physicists have studied in detail the interaction of single photons in a photonic crystal waveguide containing a quantum dot. They showed that by varying the duration of the pulses and their delay, it is possible to achieve varying degrees of nonlinearity, as well as control the degree of correlation of light quanta. The study… Continue reading Nonlinearity of quantum dot waveguide helps entangle photons

Hormone injections improve cognitive performance in Down syndrome

Injections of a hormone from the hypothalamus, which is responsible for the development of the genital organs and is commonly used to treat infertility, have been able to improve cognitive performance in people with Down syndrome. This was discovered by European scientists who conducted a study on seven young men. After six months of living… Continue reading Hormone injections improve cognitive performance in Down syndrome

Paleogeneticists read the genome of the “warrior with a griffin” from Nestor’s palace

Paleogeneticists have studied the origins of populations whose history is known from written sources. They discovered that the Mycenaeans arose from the mixing of Minoans and migrants whose origins were connected with the Eurasian steppe. However, the famous “warrior with a griffin,” whose rich burial was found in Pylos several years ago, did not have… Continue reading Paleogeneticists read the genome of the “warrior with a griffin” from Nestor’s palace

One atom emits fourteen entangled photons

German physicists have reported the successful generation of entangled multiqubit states on photons using a single atom placed in a cavity. They managed to involve 12 photons in the creation of cluster states, and 14 photons of Greenberger-Horn-Zeilinger states. The frequency of generation and detection of entangled photonic chains based on the proposed scheme turned… Continue reading One atom emits fourteen entangled photons

Denmark's trans fat ban prevented one in nine deaths from coronary heart disease

Danish and British researchers have found that since Denmark banned industrially produced trans fats in food in 2003, the number of deaths from coronary heart disease (CHD) in the country fell by about 11 percent. The results of the work were published in the journal PLoS ONE. Trans isomers of unsaturated fatty acids are present… Continue reading Denmark's trans fat ban prevented one in nine deaths from coronary heart disease

Turks rescued a bear who was poisoned by hallucinogenic honey

Turkish veterinarians helped a bear who was poisoned by honey. A young female ate too much hallucinogenic rhododendron honey stolen from an apiary, as a result of which she lost her orientation and fell into euphoria. The bear was taken to a rehabilitation center, where she soon regained consciousness and was released into the wild… Continue reading Turks rescued a bear who was poisoned by hallucinogenic honey

The sponges sneezed out the inorganic particles clogging their pores.

Zoologists have figured out how sponges get rid of inorganic debris that clogs their filtration apparatus. It turned out that these creatures remove sediment particles from their pores onto the surface of the body with mucus, and then throw them off through body contractions – this process reminded researchers of sneezing. As noted in the… Continue reading The sponges sneezed out the inorganic particles clogging their pores.

The speed of interaction of Rydberg qubits has been brought closer to the fundamental limit

Japanese physicists have succeeded in achieving energy exchange between qubits based on Rydberg atoms on a nanosecond scale, approaching the fundamental limit of this platform. In the future, this will allow quantum computing to be performed faster than decoherence destroys the states of qubits. The study was published in Nature Photonic. Despite the wide variety… Continue reading The speed of interaction of Rydberg qubits has been brought closer to the fundamental limit

Zoologists accidentally discovered a new species of deep-sea giant isopods in a Japanese aquarium

Zoologists have discovered a previously unknown species of giant isopod from the Gulf of Mexico, which reaches 26 centimeters in length and has a creamy yellow color. It got the name Bathynomus yucatanensis. As noted in the magazine article Journal of Natural Historythe species was described from a single specimen from a Japanese aquarium, which… Continue reading Zoologists accidentally discovered a new species of deep-sea giant isopods in a Japanese aquarium

Isopods “pollinate” red algae

Biologists have discovered that isopods Idotea balthica transport red algae spermatozoa Gracilaria gracilis from male to female specimens. This process is reminiscent of pollination of flowering plants by insects and other animals. As noted in the magazine article Sciencecooperation of two types is mutually beneficial: I. balthica help algae to reproduce and clear their surface… Continue reading Isopods “pollinate” red algae