Hannover 2016 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 42: Poster: Quantum Optics and Photonics III
Q 42.38: Poster
Wednesday, March 2, 2016, 16:30–19:00, Empore Lichthof
Entangling the whole by beam splitting one part — •Christian Peuntinger1,2, Callum Croal3, Vanessa Chille1,2, Christoph Marquardt1,2, Gerd Leuchs1,2, Natalia Korolkova3, and Ladislav Mišta Jr.4 — 1Max Planck Institute for the Science of Light, Guenther-Scharowsky-Str. 1/Bldg. 24, D-91058 Erlangen, Germany — 2Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg, Staudtstr. 7/B2, D-91058 Erlangen, Germany — 3School of Physics and Astronomy, University of St.Andrews, North Haugh, St. Andrews, Fife, KY16 9SS, Scotland — 4Department of Optics, Palacký University, 17.listopadu 12, 771 46 Olomouc, Czech Republic
A beamsplitter is a widely used optical element to create continuous variable entanglement. In the case of Gaussian states, the input modes need to exhibit squeezing for this purpose. We experimentally demonstrate the creation of entanglement by mixing two modes, which do not possess the required squeezing themselves [1]. This is possible if the modes are correlated to a third mode, which can be separable. The three mode states we are utilizing are the prerequisite of the distribution of entanglement [2,3] and the sharing of entanglement [4] by means of a separable mode. The creation of entanglement using a seemingly unsuitable two mode state highlights the role of global correlations.
[1] Callum Croal et al., Phys. Rev. Lett. 115, 190501 (2015).
[2] L. Mišta, Jr. and N. Korolkova, Phys. Rev. A 77, 050302(R) (2008).
[3] L. Mišta, Jr. and N. Korolkova, Phys. Rev. A 80, 032310 (2009).
[4] L. Mišta, Jr., Phys. Rev. A 87, 062326 (2013).