An architecture for integrating planar and 3D cQED devices

作者：Axline C^*; Reagor M; Heeres R; Reinhold P; Wang C; Shain K; Pfaff W; Chu Y; Frunzio L; Schoelkopf R J

来源：Applied Physics Letters, 2016, 109(4): 042601.

DOI：10.1063/1.4959241

Numerous loss mechanisms can limit coherence and scalability of planar and 3D-based circuit quantum electrodynamics (cQED) devices, particularly due to their packaging. The low loss and natural isolation of 3D enclosures make them good candidates for coherent scaling. We introduce a coaxial transmission line device architecture with coherence similar to traditional 3D cQED systems. Measurements demonstrate well-controlled external and on-chip couplings, a spectrum absent of cross-talk or spurious modes, and excellent resonator and qubit lifetimes. We integrate a resonator-qubit system in this architecture with a seamless 3D cavity, and separately pattern a qubit, readout resonator, Purcell filter, and high-Q stripline resonator on a single chip. Device coherence and its ease of integration make this a promising tool for complex experiments. Published by AIP Publishing.

• 出版日期2016-7-25