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Long-Distance Entanglement of Spin Qubits via Ferromagnet
oleh: Luka Trifunovic, Fabio L. Pedrocchi, Daniel Loss
| Format: | Article |
|---|---|
| Diterbitkan: | American Physical Society 2013-12-01 |
Deskripsi
We propose a mechanism of coherent coupling between distant spin qubits interacting dipolarly with a ferromagnet. We derive an effective two-spin interaction Hamiltonian and find a regime where the dynamics is coherent. Finally, we present a sequence for the implementation of the entangling controlled-not gate and estimate the corresponding operation time to be a few tens of nanoseconds. A particularly promising application of our proposal is to atomistic spin qubits such as silicon-based qubits and nitrogen-vacancy centers in diamond to which existing coupling schemes do not apply.