锥形布线超导transmon量子比特的优化设计
Optimal design of a superconducting transmon qubit with tapered wiring
摘要：
分析公式简化，但有用的量子位几何形状，预测表面介电损耗时，其厚度远小于金属厚度，实际设备所需的限制情况。因此，这些公式可以用来精确地预测损耗和优化量子位布局。令人惊讶的是，表面损耗的很大一部分来自连接约瑟夫森结和量子位电容器的小导线。将该导线变细可以显著降低其损耗。还预测的尺寸和密度的两个能级状态（TLS）光谱从个人表面耗散网站。
英文摘要：
Analytical formulas are presented for simplified but useful qubit geometries that predict surface dielectric loss when its thickness is much less than the metal thickness, the limiting case needed for real devices. These formulas can thus be used to precisely predict loss and optimize the qubit layout. Surprisingly, a significant fraction of surface loss comes from the small wire that connects the Josephson junction to the qubit capacitor. Tapering this wire is shown to significantly lower its loss. Also predicted are the size and density of the two-level state (TLS) spectrum from individual surface dissipation sites.
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。
