Berlin 2024 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 73: Superconducting Electronics: Qubits II (joint session TT/QI)

TT 73.5: Talk

Thursday, March 21, 2024, 16:00–16:15, H 2053

Fermionic quantum computation with Cooper pair splitters — Kostas Vilkelis^{1, 2}, •Antonio Manesco², Juan Daniel Torres Luna^1,2, Sebastian Miles^1,2, Michael Wimmer^1,2, and Anton Akhmerov² — ¹Qutech, Delft University of Technology, Delft 2600 GA, The Netherlands — ²Kavli Institute of Nanoscience, Delft University of Technology, Delft 2600 GA, The Netherlands

We propose a practical implementation of a universal quantum computer that uses local fermionic modes (LFM) rather than qubits. Our design consists of quantum dots tunnel coupled by a hybrid superconducting island together with a tunable capacitive coupling between the dots. We show that coherent control of Cooper pair splitting, elastic cotunneling, and Coulomb interactions allows us to implement the universal set of quantum gates defined by Bravyi and Kitaev. Finally, we discuss possible limitations of the device and list necessary experimental efforts to overcome them.

Keywords: local Fermionic modes; cooper pair splitter; quantum computation