Abstract
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.
- Received 25 July 2014
DOI:https://doi.org/10.1103/PhysRevLett.113.183602
© 2014 American Physical Society