Generating entangled superpositions of macroscopically distinguishable states within a parametric oscillator

2); (2) INFM; 3); 3) ((1) University of Rome "La Sapienza"; (3) University of Camerino; David Vitali (2; Francesco De Martini (1; Italy; Italy); Mauro Fortunato (2

arxiv: quant-ph/9902082 · v1 · submitted 1999-02-25 · 🪐 quant-ph

Generating entangled superpositions of macroscopically distinguishable states within a parametric oscillator

Francesco De Martini (1 , 2) , Mauro Fortunato (2 , 3) , Paolo Tombesi (2 , David Vitali (2 , 3) ((1) University of Rome "La Sapienza" , Italy

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(2) INFM (3) University of Camerino Italy)

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keywords parametriccrystalsentanglednonlinearoscillatorschroedinger-catstatesalong

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We suggest a variant of the recently proposed experiment for the generation of a new kind of Schroedinger-cat states, using two coupled parametric down-converter nonlinear crystals [F. De Martini, Phys. Rev. Lett. 81, 2842 (1998)]. We study the parametric oscillator case and find that an entangled Schroedinger-cat type state of two cavities, whose mirrors are placed along the output beams of the nonlinear crystals, can be realized under suitable conditions.

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Generating entangled superpositions of macroscopically distinguishable states within a parametric oscillator

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