Interferometric measurement of the biphoton wave function.
Interference between an unknown two-photon state (a "biphoton") and the two-photon component of a reference state gives a phase-sensitive arrival-time distribution containing full information about the biphoton temporal wave function. Using a coherent state as a reference, we observe this interference and reconstruct the wave function of single-mode biphotons from a low-intensity narrow band squeezed vacuum state.
ICFO-Institut de Ciencies Fotoniques, Avinguda Carl Friedrich Gauss, 3, 08860 Castelldefels, Barcelona, Spain.
Federica A
FA
Beduini
ICFO-Institut de Ciencies Fotoniques, Avinguda Carl Friedrich Gauss, 3, 08860 Castelldefels, Barcelona, Spain.
Joanna A
JA
Zielińska
ICFO-Institut de Ciencies Fotoniques, Avinguda Carl Friedrich Gauss, 3, 08860 Castelldefels, Barcelona, Spain.
Vito G
VG
Lucivero
ICFO-Institut de Ciencies Fotoniques, Avinguda Carl Friedrich Gauss, 3, 08860 Castelldefels, Barcelona, Spain.
Yannick A
YA
de Icaza Astiz
ICREA-Institució Catalana de Recerca i Estudis Avançats, 08015 Barcelona, Spain.
Morgan W
MW
Mitchell