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HL: Fachverband Halbleiterphysik
HL 6: Semiconductor Qubits (joint session QI/HL)
HL 6.1: Hauptvortrag
Montag, 18. März 2024, 09:30–10:00, HFT-FT 131
Spin circuit-QED in the time-domain — •Jurgen Dijkema1, Xiao Xue1, Patrick Harvey-Collard1, Maximilian Rimbach-Russ1, Sander L. de Snoo1, Guoji Zheng1, Amir Sammak2, Giordano Scappucci1, and Lieven M.K. Vandersypen1 — 1QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, The Netherlands — 2QuTech and Netherlands Organization for Applied Scientific Research, Delft University of Technology, Delft, The Netherlands
Semiconductor spin qubits hold promise for quantum computation due to their long coherence times and potential for scaling. So far, interactions between spin qubits are limited to spins a few hundreds of nanometers apart. A distributed architecture with local registers and long-range couplers will be needed to scale up to millions of qubits. Circuit quantum electrodynamics can provide a pathway to realize interactions between distant spins. Here, we report long-range spin-spin interactions using an on-chip superconducting resonator in two regimes. First with two spins detuned from the resonator frequency, allowing the demonstration of two-qubit iSWAP logic via virtual photons. Next, we tune the two spin frequencies to match the resonator frequency and demonstrate spin state-transfer using real resonator photons.
Keywords: semiconductor spin qubits; circuit quantum electrodynamics; superconducting resonators; quantum dots; silicon