Tricks with a single photon

We generate a single-photon state in a well-defined spatiotemporal mode by means of conditional measurements on biphotons produced via parametric down-conversion. This photon is then used as a tool to synthesize more complex nonclassical states of light and to implement basic elements of a linear-optical quantum-information processor. Among the highlights:
- Quantum tomography of the single-photon state |1>
- Synthesis and characterization of superpositions a|0> + b|1> by means of "quantum catalysis"
- Teleportation via a "non-local single photon" |1,0> - |0,1>