An atomtronic flux qubit : a ring lattice of Bose–Einstein condensates interrupted by three weak links

• المؤلفون الرئيسيون: Kwek, Leong-Chuan, Aghamalyan, D, Nguyen, N T, Auksztol, F, Gan, K S, Valado, M Martinez, Condylis, P C, Dumke, R, Amico, L
• مؤلفون آخرون: Institute of Advanced Studies
• التنسيق: مقال
• اللغة: English
• منشور في: 2018
• الموضوعات: Flux Qubit; Atomtronics Quantum Interference Device; DRNTU::Science::Physics
• الوصول للمادة أونلاين: https://hdl.handle.net/10356/90021; http://hdl.handle.net/10220/46489

We study a physical system consisting of a Bose–Einstein condensate confined to a ring shaped lattice potential interrupted by three weak links. The system is assumed to be driven by an effective flux piercing the ring lattice. By employing path integral techniques, we explore the effective quantum dynamics of the system in a pure quantum phase dynamics regime. Moreover, the effects of the density's quantum fluctuations are studied through exact diagonalization analysis of the spectroscopy of the Bose–Hubbard model. We demonstrate that a clear two-level system emerges by tuning the magnetic flux at degeneracy. The lattice confinement, platform for the condensate, is realized experimentally employing a spatial light modulator.