Professor Sih is investigating electron spins and photons in semiconductor nanostructures for potential applications in spin-based devices that combine logic and storage and for quantum and optical information processing in solid-state systems. Ultrafast, spatially-resolved magneto-optical spectroscopy explores electron spin coherence and electrically generating spin polarization in non-magnetic materials through spin-orbit coupling and the spin hall effect. The study of fabrication and optical characterization of prototype photonic devices, such as waveguides, ring resonators and photonic crystals, focuses on developing novel methods for controlling light.
Photoluminescence Imaging of Focused Ion Beam Induced Individual Quantum Dots, (J.-E. Lee, T. W. Saucer, A. J. Martin, D. Tien, J. M. Millunchick and V. Sih), Nano Letters 11, 1040-1043 (2011).
Mapping Spin-Orbit Splitting in Strained (In,Ga)As Epilayers, (B. M. Norman, C. J. Trowbridge, J. Stephens, A. C. Gossard, D. D. Awschalom and V. Sih), Physical Review B 82, 081304(R) (2010).
Enhanced Light Emission in Photonic Crystal Nanocavities with Erbium-Doped Silicon Nanocrystals, (M. Makarova, V. Sih, J. Warga, R. Li, L. Dal Negro and J. Vuckovic), Applied Physics Letters 92, 161107 (2008).
A Cascaded Silicon Raman Laser, (H. Rong, S. Xu, O. Cohen, O. Raday, M. Lee, V. Sih and M. Paniccia), Nature Photonics 2,170-174 (2008).
Raman Amplification of 40 Gb/s Data in Low-loss Silicon Waveguides, (V. Sih, S. Xu, Y.-H. Kuo, H. Rong, M. Paniccia, O. Cohen and O. Raday), Optics Express 15, 357-362 (2007).
Electrical Manipulation of Spin-Orbit Coupling in Semiconductor Heterostructures, (V. Sih and D. D. Awschalom), Journal of Applied Physics 101, 081710 (2007).
Generating Spin Currents in Semiconductors with the Spin Hall Effect, (V. Sih, W. H. Lau, R. C. Myers, V. R. Horowitz, A. C. Gossard and D. D. Awschalom), Physical Review Letters 97, 096605 (2006).
Spatial Imaging of the Spin Hall Effect and Current-Induced Spin Polarization in Two-Dimensional Electron Gases, (V. Sih, R. C. Myers, Y. K. Kato, W. H. Lau, A. C. Gossard and D. D. Awschalom), Nature Physics 1, 31-35 (2005).