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 , 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 gain values up to 2.5. The visibility has then been increased by means of three-photon absorption. The present paper opens interesting perspectives for the implementation of such an advanced interferometrical setup.
Experimental sub-Rayleigh resolution by an unseeded high-gain optical parametric amplifier for quantum lithography / Sciarrino, Fabio; Vitelli, Chiara; DE MARTINI, Francesco; Ryan, Glasser; Cableh,. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 77:1(2008), pp. 012324-1-012324-5. [10.1103/physreva.77.012324]
Experimental sub-Rayleigh resolution by an unseeded high-gain optical parametric amplifier for quantum lithography
SCIARRINO, Fabio;VITELLI, Chiara;DE MARTINI, Francesco;
2008
Abstract
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 , 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 gain values up to 2.5. The visibility has then been increased by means of three-photon absorption. The present paper opens interesting perspectives for the implementation of such an advanced interferometrical setup.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
