Current–phase relations of a ring-trapped Bose–Einstein condensate with a weak link<xref rid="cpb_28_1_010303fn1" ref-type="fn">*</xref> <fn id="cpb_28_1_010303fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant No. 11874247), the National Key Research and Development Program of China (Grant Nos. 2017YFA0304500 and 2017YFA0304203), PCSIRT, China (Grant No. IRT-17R70), and the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices, China (Grant No. KF201703).</p> </fn>

Current–phase relations of a ring-trapped Bose–Einstein condensate with a weak link* *

Project supported by the National Natural Science Foundation of China (Grant No. 11874247), the National Key Research and Development Program of China (Grant Nos. 2017YFA0304500 and 2017YFA0304203), PCSIRT, China (Grant No. IRT-17R70), and the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices, China (Grant No. KF201703).

Zhang Xiu-Rong, Li Wei-Dong^†

The current–phase relations for various barrier height V with η = 100 and d = 0.05 ≈ 0.7 ξ₀ in panel (a), and η = 5000 and d = 0.05 = 5ξ₀ in panel (b). Here the current–phase relations for PW solutions are plotted in solid lines, while the current–phase relations for SL solutions are plotted in dashed lines. Red triangles indicate the positions of (γ_c1,j_c1).