Publications by Alexander Lvovsky


Synthesis of the Einstein-Podolsky-Rosen entanglement in a sequence of two single-mode squeezers.

Optics letters 42 (2017) 132-134

IA Fedorov, AE Ulanov, YV Kurochkin, AI Lvovsky

We propose and implement a new scheme of generating the optical Einstein-Podolsky-Rosen entangled state. Parametric down-conversion in two nonlinear crystals, positioned back-to-back in the waist of a pump beam, produces single-mode squeezed vacuum states in orthogonal polarization modes; a subsequent beam splitting entangles them and generates the Einstein-Podolsky-Rosen state. The technique takes advantage of the strong nonlinearity associated with type-0 phase-matching configuration while, at the same time, eliminating the need for actively stabilizing the optical phase between the two single-mode squeezers. We demonstrate our method, preparing a 1.4 dB two-mode squeezed state and characterizing it via two-mode homodyne tomography.


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