Beam splitter for spin waves in quantum spin network
Department of Physics, Nankai University, Tianjin, 300071, P.R. China
2 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100080, P.R. China
Revised: 2 June 2006
Published online: 7 August 2006
We theoretically design and analytically study a controllable beam splitter for the spin wave propagating in a star-shaped (e.g., a Y-shaped beam) spin network. Such a solid state beam splitter can display quantum interference and quantum entanglement by the well-aimed controls of interaction on nodes. It will enable an elementary interferometric device for scalable quantum information processing based on the solid system.
PACS: 03.65.Ud – Entanglement and quantum nonlocality / 75.10.Jm – Quantized spin models / 03.67.Lx – Quantum computation
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2006