We investigate how multiphoton quantum states obtained through optical parametric amplification can be manipulated by performing a measurement on a small portion of the output light field. We study in detail how the macroqubit features are modified by varying the amount of extracted information and the strategy adopted at the final measurement stage. At last the obtained results are employed to investigate the possibility of performing a microscopic-macroscopic nonlocality test free from auxiliary assumptions.
Measurement-induced quantum operations on multiphoton states / Vitelli, Chiara; Spagnolo, Nicolo'; Sciarrino, Fabio; DE MARTINI, Francesco. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 82:6(2010). [10.1103/physreva.82.062319]
Measurement-induced quantum operations on multiphoton states
VITELLI, Chiara;SPAGNOLO, NICOLO';SCIARRINO, Fabio;DE MARTINI, Francesco
2010
Abstract
We investigate how multiphoton quantum states obtained through optical parametric amplification can be manipulated by performing a measurement on a small portion of the output light field. We study in detail how the macroqubit features are modified by varying the amount of extracted information and the strategy adopted at the final measurement stage. At last the obtained results are employed to investigate the possibility of performing a microscopic-macroscopic nonlocality test free from auxiliary assumptions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
