88 research outputs found
Blockade and Counterflow Supercurrent in exciton-condensate Josephson junctions
We demonstrate that perfect conversion between charged supercurrents in
superconductors and neutral supercurrents in electron-hole pair condensates is
possible via a new Andreev-like scattering mechanism. As a result, when two
superconducting circuits are coupled through a bilayer exciton condensate, the
superflow in both layers is drastically modified. Depending on the phase biases
the supercurrents can be completely blocked or exhibit perfect drag.Comment: 4 pages, 2 figure
Theoretical Study on Transport Properties of Normal Metal - Zigzag Graphene Nanoribbon - Normal Metal Junctions
We investigate transport properties of the junctions in which the graphene
nanoribbon with the zigzag shaped edges consisting of the legs is
sandwiched by the two normal metals by means of recursive Green's function
method. The conductance and the transmission probabilities are found to have
the remarkable properties depending on the parity of . The singular
behaviors close to E=0 with being the Fermi energy are demonstrated. The
channel filtering is shown to occur in the case with even.Comment: 4 pages, 5 figure
Simulating the exchange of Majorana zero modes with a photonic system
The realization of Majorana zero modes is in the centre of intense theoretical and experimental investigations. Unfortunately, their exchange that can reveal their exotic statistics needs manipulations that are still beyond our experimental capabilities. Here we take an alternative approach. Through the Jordan-Wigner transformation, the Kitaev's chain supporting two Majorana zero modes is mapped to the spin-1/2 chain. We experimentally simulated the spin system and its evolution with a photonic quantum simulator. This allows us to probe the geometric phase, which corresponds to the exchange of two Majorana zero modes positioned at the ends of a three-site chain. Finally, we demonstrate the immunity of quantum information encoded in the Majorana zero modes against local errors through the simulator. Our photonic simulator opens the way for the efficient realization and manipulation of Majorana zero modes in complex architectures
Dissonance reduction and causal explanation in forced compliance situation
International audienc
Dissonance reduction and causal explanation in forced compliance situation
International audienc
Statut d'agent, rationalisation et explication causale dans la soumission forcée
International audienc
Effects of vitamin E and phosphatidylcholine on qualitative and quantitative parameters of rainbow trout (Oncorhynchus mykiss) milt
The aim of this work was to investigate the effects of vitamin E and phosphatidylcholine on rainbow trout
(Oncorhynchus mykiss) milt. One hundred and twelve rainbow trout (RB) broodstock (2n, 1030\ub1 20g
body weight, male:female ratio = 50:50) were fed four isoproteic and isolipidic diets for 110 days. Diets
were differing for the type of vitamin premix and phosphatidylcholine supplied: Control (vitamin premix
without Vit. E, no phosphatidylcholine); Vit.E (a premix with Vit. E, no phosphatidylcholine); PhC, (vitamin
premix without Vit. E, phosphatidylcholine 2.5%); Vit.E +PhC, (vitamin premix with Vit. E and phosphatidylcholine
2.5%).
Sperm total volume, in sexually mature males (3+; 966\ub1114g body weight), ranged between 18.57ml
(Control) and 34.31ml (Vit. E). Sperm density varied between 1.76x109 Szoa/ml (Control) and 1.16x109
Szoa/ml (Vit. E+PhC), while relative density (related to male body weight) tended to increase with Vit. E
(>50x109 Szoa/ml) and to reduce with Vit. E + PhC (85%
in all treatments, while motility duration was around 2.37min for Vit. E and Control reached only 0.97min.
After overnight storage (+4\ub0C, for 18 hours) motility decreased, 75-80% in gamete motility and 3.39-
56.7% in time motility.
PhC dietary supplements significantly increased arachidonic acid contents of sperm with respect to
Control (>120 vs 73\u3bcg/ g), while Vit. E caused a huge increase in C20:3 n-3 (10.25 vs 2.27ppm).
DHA/EPA ratio was significantly lower in Control (>2; p<0.05), while n-3/n-6 ratio was significantly the
highest for Vit. E (9.46 vs <7.3)
Activation d'explications internes et externes du comportement problématique dans la situation de soumission forcée
International audienc
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