arXiv 0801.35312008-01-23quant-ph

Experimental sub-Rayleigh resolution by an unseeded high-gain optical parametric amplifier for quantum lithography

Fabio Sciarrino, Chiara Vitelli, Francesco De Martini, Ryan Glasser, Hugo Cable, Jonathan P. Dowling

备注：: 5 pages, 7 figures
发表信息：: Phys. Rev. A 77, 012324 (2008)
DOI：: 10.1103/PhysRevA.77.012324

英文摘要：

Quantum lithography proposes to adopt entangled quantum states in order to increase resolution in interferometry. In the present paper we experimentally demonstrate that the output of a high-gain optical parametric amplifier can be intense yet exhibits quantum features, namely, sub-Rayleigh fringes, as proposed by Agarwal et al. (Phys. Rev. Lett. 86, 1389 (2001)). We investigate multiphoton states generated by a high-gain optical parametric amplifier operating with a quantum vacuum input for a gain values up to 2.5. The visibility has then been increased by means of three-photon absorption. The present article opens interesting perspectives for the implementation of such an advanced interferometrical setup.

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