Berlin 2015 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 16: Transport: Quantum Coherence and Quantum Information Systems – Experiments (jointly with HL, MA)

TT 16.6: Talk

Monday, March 16, 2015, 16:15–16:30, H 0110

Superconducting on-chip microwave interferometers — •Edwin P. Menzel^1,2,3, Michael Fischer^1,2,3, Christian Schneider^1,2,3, Alexander Baust^1,2,3, Peter Eder^1,2,3, Jan Goetz^1,2,3, Max Haeberlein^1,2,3, Manuel Schwarz^1,2,3, Karl Friedrich Wulschner^1,2,3, Edwar Xie^1,2,3, Ling Zhong^1,2,3, Frank Deppe^1,2,3, Kirill Fedorov^1,2,3, Hans Huebl^1,2,3, Achim Marx^1,2,3, and Rudolf Gross^1,2,3 — ¹Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany — ²Physik-Department, TU München, 85748 Garching, Germany — ³Nanosystems Initiative Munich (NIM), 80799 München, Germany

In the realm of all-microwave quantum computation, information is encoded in itinerant microwave photons propagating along transmission lines. In such a system unitary operations are implemented by linear elements such as beam splitters or interferometers. However, for two-qubit operations non-linear gates, e.g., c-phase gates are required. In this work, we investigate superconducting interferometers as a building block of a c-phase gate. We experimentally characterize their scattering properties and compare them to simulation results. Finally, we discuss our progress towards the realization of a c-phase gate.

This work is supported by the DFG via SFB 631 and the EU projects CCQED and PROMISCE.