Physics – Quantum Physics
Scientific paper
2005-11-18
Physics
Quantum Physics
8 pages, 3 figures, new title, some content change, replaced Fig.1
Scientific paper
10.1103/PhysRevA.73.023808
We construct a projection measurement process for the maximally entangled N-photon state (the NOON-state) with only linear optical elements and photodetectors. This measurement process will give null result for any N-photon state that is orthogonal to the NOON state. We examine the projection process in more detail for N=4 by applying it to a four-photon state from type-II parametric down-conversion. This demonstrates an orthogonal projection measurement with a null result. This null result corresponds to a dip in a generalized Hong-Ou-Mandel interferometer for four photons. We find that the depth of the dip in this arrangement can be used to distinguish a genuine entangled four-photon state from two separate pairs of photons. We next apply the NOON state projection measurement to a four-photon superposition state from two perpendicularly oriented type-I parametric down-conversion processes. A successful NOON state projection is demonstrated with the appearance of the four-photon de Broglie wavelength in the interference fringe pattern.
Guo Guang-Can
Ou Zhe Yu
Sun Fang-Wen
No associations
LandOfFree
Projection Measurement of the Maximally Entangled N-Photon State for a Demonstration of N-Photon de Broglie Wavelength does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Projection Measurement of the Maximally Entangled N-Photon State for a Demonstration of N-Photon de Broglie Wavelength, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection Measurement of the Maximally Entangled N-Photon State for a Demonstration of N-Photon de Broglie Wavelength will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-705251