Direct Schmidt number measurement of high-gain parametric down conversion
I.V. Dyakonov, P. Sharapova, T.S. Iskhakov, G. Leuchs, Laser Physics Letters 12 (2015).

Coherent control of interaction and entanglement of a Rydberg atom with few photons
P. Sharapova, O.V. Tikhonova, Laser Physics Letters 10 (2013).