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Open Quantum systems: Dissipatively coupled quantum networks and quantum sources PhoG

Team:

Pablo de la Hoz, Matthew Thornton, Natalia Korolkova and consortium PhoG under Flagship for Quantum Technologies

Figure taken from the Max Planck Society Research magazine, Feb 2015.

Quantum Digital Signatures using homodyne measurements

Team:

Matthew Thornton (PhD project), Natalia Korolkova (theory);
Quantum Information group at Max Planck Institute for the Science of Light, Erlangen, Germany (experiment)

Spectrally filtered light from such incoherent sources as an incandescent lamp can be used for the probe.

Quantum tomography by noise and imperfections

Team:

Dmitri Mogilevtsev, Natalia Korolkova (theory);

Group of Ch. Silberhorn, University of Paderborn, Germany (experiment)

Quantum correlations and entanglement

Entanglement distribution by separable ancilla ? correlated noise creates coherence!

Gaussian entanglement. Quantum correlations and quantum discord. Multipartite quantum communication protocols

Team:

L. Mišta, N. Korolkova (theory);   R. Tatham, N. Quinn, C. Croal (completed PhD projects);

Ch. Peuntinger, V. Chille, Ch. Marquardt, G. Leuchs (Experiments at the Max Planck Institute for the Science of Light)

 

  1   Entanglement distribution by separable ancilla

  2   Entangling power of a beamsplitter

Beyond the equalization: diffusive dissipative distribution and localization.

Dissipation protects and creates quantum coherence

Team:

Dmitri Mogilevtsev

N. Korolkova

Selected past topics

Entanglement Concentration using Gaussian states of Light

D. Menzies, R. Tatham, (completed PhD projects), N. Korolkova

Light-Matter Interactions and Entanglement Concentration using Gaussian states of Light and Atomic Ensembles

G. Sinclair, D. Menzies, R. Tatham, (completed PhD projects), N. Korolkova