Super-resolving phase measurements with a multi-photon entangled state
Preprint
- 22 December 2003
Abstract
Using a linear optical elements and post-selection, we construct an entangled polarization state of three photons in the same spatial mode. This state is analogous to a ``photon-number path entangled state'' and can be used for super-resolving interferometry. Measuring a birefringent phase shift, we demonstrate two- and three-fold improvements in phase resolution.Keywords
All Related Versions
- Version 1, 2003-12-22, ArXiv
- Published version: Nature, 429 (6988), 161.
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