Joel Heersink

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We report on a novel and efficient source of polarization squeezing that uses a single pass through an optical fiber. Using the fiber's two orthogonal polarization axes produces two identical squeezed beams. Combining these in a Stokes measurement generates polarization squeezing of up to 5.1 +/- 0.3 dB. Furthermore, this scheme enables us to directly(More)
We perform a reconstruction of the polarization sector of the density matrix of an intense polarization squeezed beam starting from a complete set of Stokes measurements. By using an appropriate quasidistribution, we map this onto the Poincaré space, providing a full quantum mechanical characterization of the measured polarization state.
Joel F. Corney,* Joel Heersink, Ruifang Dong, Vincent Josse, Peter D. Drummond, Gerd Leuchs, and Ulrik L. Andersen ARC Centre of Excellence for Quantum-Atom Optics, School of Physical Sciences, The University of Queensland, Brisbane, QLD 4072, Australia Institut für Optik, Information und Photonik, Max-Planck Forschungsgruppe, Universität Erlangen-Nürnberg,(More)
We report new experiments on polarization squeezing using ultrashort photonic pulses in a single pass of a birefringent fiber. We measure what is to our knowledge a record squeezing of -6.8+/-0.3 dB in optical fibers, which when corrected for linear losses is -10.4+/-0.8 dB. The measured polarization squeezing as a function of optical pulse energy, which(More)
We show that single copy distillation of squeezing from continuous variable non-Gaussian states is possible using linear optics and conditional homodyne detection. A specific non-Gaussian noise source, corresponding to a random linear displacement, is investigated experimentally. Conditioning the signal on a tap measurement, we observe probabilistic(More)
We propose an operational degree of polarization in terms of the variance of the Stokes vector minimized over all the directions of the Poincaré sphere. We examine the properties of this second-order definition and carry out its experimental determination. Quantum states with the same standard (first-order) degree of polarization are correctly discriminated(More)
Oliver Glöckl,* Stefan Lorenz, Christoph Marquardt, Joel Heersink, Michael Brownnutt, Christine Silberhorn, Qing Pan, Peter van Loock, Natalia Korolkova, and Gerd Leuchs Zentrum für Moderne Optik, Physikalisches Institut, Universität Erlangen-Nürnberg, Staudtstraße 7/B2, 91058 Erlangen, Germany The State Key Laboratory of Quantum Optics and Quantum Optics(More)
We report new experiments that test quantum dynamical predictions of polarization squeezing for ultrashort photonic pulses in a birefringent fiber, including all relevant dissipative effects. This exponentially complex many-body problem is solved by means of a stochastic phase-space method. The squeezing is calculated and compared to experimental data,(More)
We have experimentally demonstrated the efficient creation of highly entangled bipartite continuous variable polarisation states. Exploiting an optimised scheme for the production of squeezing using the Kerr non–linearity of a glass fibre we generated polarisation squeezed pulses with a mean classical excitation in Ŝ3. Polarisation entanglement was(More)
Ruifang Dong, Joel Heersink, Joel F. Corney, Peter D. Drummond, Ulrik L. Andersen, and Gerd Leuchs Institut für Optik, Information und Photonik, Max–Planck Forschungsgruppe, Universität Erlangen–Nürnberg, Günther-Scharowsky-Str. 1, Bau 24, 91058, Erlangen, Germany ARC Centre of Excellence for Quantum-Atom Optics, School of Physical Sciences, The University(More)