Universal Squash Model For Optical Communications Using Linear Optics And Threshold Detectors

Details Universal Squash Model For Optical Communications Using Linear Optics And Threshold Detectors Universal Squash Model For Optical Communications Using Linear Optics And Threshold Detectors

2010-11-12

arxiv.org/abs/1011.2982v1

Phys. Rev. A 84, 020303(R) (2011)

Physics

Quantum Physics

14 pages

Scientific paper

10.1103/PhysRevA.84.020303

The transmission of photons through open-air or an optical fiber is an important primitive in quantum information processing. Theoretical description of such a transmission process often considers only a single photon as the information carrier and thus fails to accurately describe experimental optical implementations where any number of photons may enter a detector. It is important to bridge this big gap between experimental implementations and the theoretical description. One powerful method that emerges from recent efforts to achieve this goal is to consider a squash model that conceptually converts multi-photon states to single-photon states, thereby justifying the equivalence between theory and experiments. However, up to now, only a limited number of protocols admit a squash model; furthermore, a no-go theorem has been proven which appears to rule out the existence of a universal squash model. Here, we observe that an apparently necessary condition demanded by all existing squash models to preserve measurement statistics is too stringent a requirement for many protocols. By chopping this requirement, we show that rather surprisingly, a universal squash model actually exists for a wide range of protocols including quantum key distribution protocols, quantum state tomography, the testing of Bell's inequalities, and entanglement verification, despite the standard no-go theorem.

Affiliated with

Also associated with

No associations

Rating

Universal Squash Model For Optical Communications Using Linear Optics And Threshold Detectors 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 Universal Squash Model For Optical Communications Using Linear Optics And Threshold Detectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Universal Squash Model For Optical Communications Using Linear Optics And Threshold Detectors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-204688