TY - JOUR
T1 - Cavity-mediated iSWAP oscillations between distant spins
AU - Dijkema, Jurgen
AU - Xue, Xiao
AU - Harvey-Collard, Patrick
AU - Rimbach-Russ, Maximilian
AU - de Snoo, Sander L.
AU - Zheng, Guoji
AU - Sammak, Amir
AU - Scappucci, Giordano
AU - Vandersypen, Lieven M.K.
PY - 2024
Y1 - 2024
N2 - Direct interactions between quantum particles naturally fall off with distance. However, future quantum computing architectures are likely to require interaction mechanisms between qubits across a range of length scales. In this work, we demonstrate a coherent interaction between two semiconductor spin qubits 250 μm apart using a superconducting resonator. This separation is several orders of magnitude larger than for the commonly used direct interaction mechanisms in this platform. We operate the system in a regime in which the resonator mediates a spin–spin coupling through virtual photons. We report the anti-phase oscillations of the populations of the two spins with controllable frequency. The observations are consistent with iSWAP oscillations of the spin qubits, and suggest that entangling operations are possible in 10 ns. These results hold promise for scalable networks of spin qubit modules on a chip.
AB - Direct interactions between quantum particles naturally fall off with distance. However, future quantum computing architectures are likely to require interaction mechanisms between qubits across a range of length scales. In this work, we demonstrate a coherent interaction between two semiconductor spin qubits 250 μm apart using a superconducting resonator. This separation is several orders of magnitude larger than for the commonly used direct interaction mechanisms in this platform. We operate the system in a regime in which the resonator mediates a spin–spin coupling through virtual photons. We report the anti-phase oscillations of the populations of the two spins with controllable frequency. The observations are consistent with iSWAP oscillations of the spin qubits, and suggest that entangling operations are possible in 10 ns. These results hold promise for scalable networks of spin qubit modules on a chip.
UR - http://www.scopus.com/inward/record.url?scp=85211956963&partnerID=8YFLogxK
U2 - 10.1038/s41567-024-02694-8
DO - 10.1038/s41567-024-02694-8
M3 - Article
AN - SCOPUS:85211956963
SN - 1745-2473
JO - Nature Physics
JF - Nature Physics
M1 - 13575
ER -