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Quantifying quantum coherence of multiple-charge states in tunable Josephson junctions
Jiangbo He, Dong Pan, Mingli Liu +11
Coherence and tunneling play central roles in quantum phenomena. In a tunneling event, the time that a particle spends inside the barrier has been fiercely debated. This problem be…
Half-metal and other fractional metal phases in doped AB bilayer graphene
A. L. Rakhmanov, A. V. Rozhkov, A. O. Sboychakov +1
We theoretically argue that, in doped AB bilayer graphene, the electron-electron coupling can give rise to the spontaneous formation of fractional metal phases. These states, being…
Coherent dynamics of a photon-dressed qubit
M. P. Liul, C. -H. Chien, C. -Y. Chen +6
We consider the dynamics and stationary regime of a capacitively-shunted transmon-type qubit in front of a mirror, affected by two signals: probe and dressing signals. By varying t…
Higher-Order Weyl-Exceptional-Ring Semimetals
Tao Liu, James Jun He, Zhongmin Yang +1
For first-order topological semimetals, non-Hermitian perturbations can drive the Weyl nodes into Weyl exceptional rings having multiple topological structures and no Hermitian cou…
Analog of a quantum heat engine using a single-spin qubit
K. Ono, S. N. Shevchenko, T. Mori +2
A quantum two-level system with periodically modulated energy splitting could provide a minimal universal quantum heat machine. We present the experimental realization and the theo…
Effect of disorder on the transverse magnetoresistance of Weyl semimetals
Ya. I. Rodionov, K. I. Kugel, B. A. Aronzon +1
We study the effect of random potential created by different types of impurities on the transverse magnetoresistance of Weyl semimetals. It is shown that the magnetic field and tem…