In this case, as the normal state sheet resistance \(T)\). MEASURING THE GLOB AL PHASE COHERENCE OF AN IMA GE Gwendoline Blanc het 1,Lionel Moisan 2,Bernar d Roug e♁ 1 Centre National d Etudes´ Spatiales, T oulouse, France 2 Uni versit e´ P aris. Quasiparticle interferences and establishment of long-range phase coherence across the insulatorsuperconductor phase boundary ac, Tunnelling current maps I(r, 30 meV) on the three samples: p. This result is found by a theoretical argument involving both the phase-number and energy-time uncertainty. Lasers possess a well-defined global phase and are characterized by large fluctuations in the number of photons. Experimental evidence from studies of the onset of superconductivity in ultrathin Sn films is presented which implies that the sheet resistance is the only relevant variable in determining the onset of global phase coherence. Lasers and Bose-Einstein condensates (BECs) exhibit macroscopic quantum coherence in seemingly unrelated ways. The fermionic scenario assumes that disorder destroys the Cooper pairs, and that the further increase of disorder leads to localization of normal carriers and formation of the insulating state. Simulating long-range coherence of atoms and photons in quantum computers. additional phase-ordering transition, which establishes global phase coherent superconductivity through the entire nanowire array, is absent in NbN-SBA-15, and. The superconductor-insulator transitions observed in a wealth of various systems 1, 2, are often grouped into two distinct categories depending on the presumed mechanism of superconductivity suppression - fermionic 3 or bosonic 4, 5.
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