Entangling Different Degrees of Freedom by Quadrature Squeezing Cylindrically 
Polarized Modes

Gabriel, C.; Aiello, A.; Zhong, W.; Euser, T. G.; Joly, N. Y.; Banzer, P.; Foertsch, M.; Elser, D.; Andersen, U. L.; Marquardt, Ch.; Russell, P. St. J.; Leuchs, G.

doi:10.1103/PhysRevLett.106.060502

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Entangling Different Degrees of Freedom by Quadrature Squeezing Cylindrically Polarized Modes

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Gabriel, C.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons200999

Aiello, A.
Optical Quantum Information Theory, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201244

Zhong, W.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201057

Euser, T. G.
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201100

Joly, N. Y.
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201008

Banzer, P.
International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society;
Interference Microscopy and Nanooptics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201062

Foertsch, M.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201053

Elser, D.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201000

Andersen, U. L.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201126

Marquardt, Ch.
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201171

Russell, P. St. J.
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201115

Leuchs, G.
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Gabriel, C., Aiello, A., Zhong, W., Euser, T. G., Joly, N. Y., Banzer, P., et al. (2011). Entangling Different Degrees of Freedom by Quadrature Squeezing Cylindrically Polarized Modes. PHYSICAL REVIEW LETTERS, 106(6): 060502. doi:10.1103/PhysRevLett.106.060502.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6A29-8

Abstract

Quantum systems such as, for example, photons, atoms, or Bose-Einstein condensates, prepared in complex states where entanglement between distinct degrees of freedom is present, may display several intriguing features. In this Letter we introduce the concept of such complex quantum states for intense beams of light by exploiting the properties of cylindrically polarized modes. We show that already in a classical picture the spatial and polarization field variables of these modes cannot be factorized. Theoretically it is proven that by quadrature squeezing cylindrically polarized modes one generates entanglement between these two different degrees of freedom. Experimentally we demonstrate amplitude squeezing of an azimuthally polarized mode by exploiting the nonlinear Kerr effect in a specially tailored photonic crystal fiber. These results display that such novel continuous-variable entangled systems can, in principle, be realized.