Berlin 2015 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 7: Transport: Quantum Coherence and Quantum Information Systems – Theory (jointly with HL, MA)

TT 7.3: Talk

Monday, March 16, 2015, 10:00–10:15, H 3005

Optimal control of single flux quantum pulses — •Per Liebermann, Daniel Egger, and Frank Wilhelm — Universität des Saarlandes, Saarbrücken

Rapid single flux quantum pulses are a natural candidate for on-chip control of superconducting qubits [1]. We apply trains of single flux quantum pulses to perform single qubit gates. Under the constraint of constant amplitudes and gate times we use genetic algorithms for optimising the pulse sequence to decrease the gate error by two orders of magnitude. We consider leakage transitions into a third energy level as well as timing jitter of the pulses, exploring the robustness of our optimized sequence. This takes us one step further to on-chip qubit controls.

[1] R. McDermott and M.G. Vavilov, Phys. Rev. Applied 2, 014007 (2014)