Linear optics and projective measurements for fun and profit
Document Type
Conference Proceeding
Publication Date
9-19-2003
Abstract
The technique of projective measurements in linear optics can provide apparent, efficient nonlinear interaction between photons, which is technically problematic otherwise. We present an application of such a technique to prepare large photon-number path entanglement. Large photon-number path entanglement is an important resource for Heisenberg-limited optical interferometry, where the sensitivity of phase measurements can be improved beyond the usual shot-noise limit. A similar technique can also be applied to signal the presence of a single photon without destroying it. We further show how to build a quantum repeater for long-distance quantum communication.
Publication Source (Journal or Book title)
Proceedings of SPIE - The International Society for Optical Engineering
First Page
298
Last Page
307
Recommended Citation
Kok, P., Lee, H., Williams, C., & Dowling, J. (2003). Linear optics and projective measurements for fun and profit. Proceedings of SPIE - The International Society for Optical Engineering, 5115, 298-307. https://doi.org/10.1117/12.502402