Generation of Large Number-Path Entanglement Using Linear Optics and Feed-Forward

Details Generation of Large Number-Path Entanglement Using Linear Optics and Feed-Forward Generation of Large Number-Path Entanglement Using Linear Optics and Feed-Forward

2007-04-05

arxiv.org/abs/0704.0678v1

Phys. Rev. Lett. 99, 163604 (2007)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.99.163604

We show how an idealised measurement procedure can condense photons from two modes into one, and how, by feeding forward the results of the measurement, it is possible to generate efficiently superpositions of components for which only one mode is populated, commonly called ``N00N states''. For the basic procedure, sources of number states leak onto a beam splitter, and the output ports are monitored by photodetectors. We find that detecting a fixed fraction of the input at one output port suffices to direct the remainder to the same port with high probability, however large the initial state. When instead photons are detected at both ports, Schr\"{o}dinger cat states are produced. We describe a circuit for making the components of such a state orthogonal, and another for subsequent conversion to a N00N state. Our approach scales exponentially better than existing proposals. Important applications include quantum imaging and metrology.

Affiliated with

Also associated with

No associations

Rating

Generation of Large Number-Path Entanglement Using Linear Optics and Feed-Forward 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 Generation of Large Number-Path Entanglement Using Linear Optics and Feed-Forward, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Generation of Large Number-Path Entanglement Using Linear Optics and Feed-Forward will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-292958