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134 papers · 1 filter
Antibunched photons from inelastic Cooper-pair tunneling
Juha Leppäkangas, Mikael Fogelström, Alexander Grimm +3
We demonstrate theoretically that charge transport across a Josephson junction, voltage-biased through a resistive environment, produces antibunched photons. We develop a continuou…
The composition of the protosolar disk and the formation conditions for comets
K. Willacy, C. Alexander, M. Ali-Dib +12
Conditions in the protosolar nebula have left their mark in the composition of cometary volatiles, thought to be some of the most pristine material in the solar system. Cometary co…
Magnetic order, spin waves and fluctuations in the triangular antiferromagnet La2Ca2MnO7
P. Dalmas de Réotier, C. Marin, A. Yaouanc +4
We report magnetic susceptibility, specific heat and muon spin relaxation (muSR) experiments on the triangular antiferromagnet La2Ca2MnO7 which develops a genuine two-dimensional,…
Interactive certificate for the verification of Wiedemann's Krylov sequence: application to the certification of the determinant, the minimal and the characteristic polynomials of sparse matrices
Jean-Guillaume Dumas, Erich Kaltofen, Emmanuel Thomé
Certificates to a linear algebra computation are additional data structures for each output, which can be used by a-possibly randomized- verification algorithm that proves the corr…
Hyperfine transitions of 13CN from pre-protostellar sources
David Flower, Pierre Hily-Blant
Recent quantum mechanical calculations of rate coefficients for collisional transfer of population between the hyperfine states of 13CN enable their population densities to be dete…
Observation of the Berezinskii-Kosterlitz-Thouless Phase Transition in an Ultracold Fermi Gas
P. A. Murthy, I. Boettcher, L. Bayha +7
We experimentally investigate the first-order correlation function of a trapped Fermi gas in the two-dimensional BEC-BCS crossover. We observe a transition to a low-temperature sup…