Direct generation of a multi-transverse mode non-classical state of light

Benoît Chalopin (1, 2) , Francesco Scazza (1) , Claude Fabre (1) , Nicolas Treps (1)

1 LKB (Jussieu) - Laboratoire Kastler Brossel
2 Max Planck Institute for the Science of Light

Quantum computation and communication protocols require quantum resources which are in the continuous variable regime squeezed and/or quadrature entangled optical modes. To perform more and more complex and robust protocols, one needs sources that can produce in a controlled way highly multimode quantum states of light. One possibility is to mix different single mode quantum resources. Another is to directly use a multimode device, either in the spatial or in the frequency domain. We present here the first experimental demonstration of a device capable of producing simultanuously several squeezed transverse modes of the same frequency and which is potentially scalable. We show that this device, which is an Optical Parametric Oscillator using a self-imaging cavity, produces a multimode quantum resource made of three squeezed transverse modes.

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

Benoît Chalopin, Francesco Scazza, Claude Fabre, Nicolas Treps. Direct generation of a multi-transverse mode non-classical state of light. 2011. ⟨hal-00557555⟩