受控的半氟子分子
Semifluxon molecule under control
摘要：
在基态具有相位降π的约瑟夫森结允许产生仅携带一半磁通量量子Phi_0~2.07*10^-15 Wb的超电流涡旋。这样的半流激子具有双重简并基态，表示为上（通量为+Phi_0/2，超电流顺时针循环）和下（通量为-Phi_0/2，超电流逆时针循环）。本文研究了在0 π-0长约瑟夫森结中由两个耦合半流子组成的分子。半流激子的通量（极性）由两个片上SQUID测量。通过改变直流偏置电流施加到0-π-0结，我们展示了可控的操纵和两个状态之间的切换，上下和上下，一个半流激子分子。这些结果提供了一个重要的一步，采用半流子作为位或量子位的经典和量子数字电子学。
英文摘要：
Josephson junctions with a phase drop pi in the ground state allow to create vortices of supercurrent carrying only half of the magnetic flux quantum Phi_0~2.07*10^-15 Wb. Such semifluxons have two-fold degenerate ground states denoted up (with flux +Phi_0/2 and supercurrent circulating clockwise) and down (with flux -Phi_0/2 and supercurrent circulating counterclockwise). We investigate a molecule consisting of two coupled semifluxons in a 0-pi-0 long Josephson junction. The fluxes (polarities) of semifluxons are measured by two on-chip SQUIDs. By varying the dc bias current applied to the 0-pi-0 junction, we demonstrate controllable manipulation and switching between two states, up-down and down-up, of a semifluxon molecule. These results provide a major step towards employing semifluxons as bits or qubits for classical and quantum digital electronics.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
