Experimental tomography of NOON states with large photon numbers

Y. Israel*, I. Afek, S. Rosen, O. Ambar, Y. Silberberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We have performed experimental quantum state tomography of NOON states with up to four photons. The measured states are generated by mixing photons from a classical coherent state with down-converted photon pairs. We show that the fidelity between the produced states and the ideal NOON states is high. The fidelity is limited by the overlap of the two-photon down-converted state with any two photons originating from the coherent state, for which we introduce and measure a figure of merit. A second limitation on the fidelity set by the total setup transmission is discussed. We also apply the same tomography procedure for characterizing correlated photon hole states.

Original languageEnglish
Article number022115
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number2
StatePublished - 10 Feb 2012
Externally publishedYes


FundersFunder number
Seventh Framework Programme267637


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