## Generation and interference effectes with quantum states of light

The study of quantum states of light is a rapidly developing ﬁeld of

research. In recent years, scientists have begun to ﬁnd situations where

quantum mechanically systems provide unique solutions to modern

technological problems. Quantum information processing (QIP) is an exciting

example of promising applications of such systems.

Within the NanoScience Group, we are exploring the quantum correlation

properties of light generated by the non linear process of Spontaneous

Parametric Down Conversion.

The mechanism generates two infrared photon, with peculiar quantum

properties, from the splitting of a single pump photon at 775 nm.

We are investigating their time-energy entanglement by performing

coincidence measurements and demonstrating nonclassical interference in a

free space Mach Zehnder Interferometer.