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

Journal article

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.

Authors: Fedorov, IA; Ulanov, AE; Kurochkin, YV; Lvovsky, AI

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Optical Society of America
• Journal: Optics Letters
• Volume: 42
• Issue: 1
• Pages: 132-134
• Place of publication: United States
• Publication date: 2016-12-23
• DOI: 10.1364/ol.42.000132
• EISSN: 1539-4794
• ISSN: 0146-9592
• Pmid: 28059196
• Language: English
• Keywords: FFR