We have provided the first demonstration of a general orthogonalization procedure that, starting from an arbitrary continuous-variable quantum state and from limited information about the state itself, can generate an orthogonal state and arbitrary coherent superpositions of the two.
Jul 01 2014
We produced entanglement between differently-encoded photonic qubits. A single-photon-based qubit state on one side and a coherent-state-based one on the other.
The situation closely resembles the quantum-classical hybrid entanglement of the atom-cat system in the Schroedinger’s cat paradox.
Nature Photonics made a cover out of the story (and of our image).
Jan 01 2014
Jan 01 2014
Dec 31 2013
Apr 01 2013
Aug 01 2012
We describe the first use of a genetic algorithm to adaptively probe the arbitrary spectral/temporal shape of ultrashort quantum light states. Besides fully reconstructing the complex spectral/temporal structure of a single photon, we also demonstrate how to use this capability as a clever new way of encoding quantum information.
May 01 2011
Jan 01 2011
We have demonstrated the operation of a non-deterministic noiseless amplifier based on the addition and subtraction of single photons. Our scheme greatly outperforms all other existing approaches to phase-insensitive noiseless amplification, both in terms of amplification gain and final state fidelity.