Generating non-Gaussian states using collisions between Rydberg polaritons

Jovica Stanojevic (1) , Valentina Parigi (1) , Erwan Bimbard (1) , Alexei Ourjoumtsev (1) , Pierre Pillet (2) , Philippe Grangier (1)

1 Laboratoire Charles Fabry / Optique Quantique
2 LAC - Laboratoire Aimé Cotton

We investigate theoretically the deterministic generation of quantum states with negative Wigner functions, by using giant non-linearities due to collisional interactions between Rydberg polaritons. The state resulting from the polariton interactions may be transferred with high fidelity into a photonic state, which can be analyzed using homodyne detection followed by quantum tomography. Besides generating highly non-classical states of the light, this method can also provide a very sensitive probe for the physics of the collisions involving Rydberg states.

Domaines: Physique Quantique [quant-ph]; Optique [physics.optics]

Jovica Stanojevic, Valentina Parigi, Erwan Bimbard, Alexei Ourjoumtsev, Pierre Pillet, et al.. Generating non-Gaussian states using collisions between Rydberg polaritons. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2012, 86 (2), pp.021403. ⟨10.1103/PhysRevA.86.021403⟩. ⟨hal-00749490⟩