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Journal Article

Distillation of squeezing using an engineered pulsed parametric down-conversion source

MPS-Authors
/persons/resource/persons201048

Dirmeier,  Thomas
Leuchs Emeritus Group, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department of Physics;

/persons/resource/persons201106

Khan,  Imran
Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department of Physics;

/persons/resource/persons201135

Müller,  Christian R.
Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department of Physics;

/persons/resource/persons201126

Marquardt,  Christoph
Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department of Physics;

/persons/resource/persons201115

Leuchs,  Gerd
Leuchs Emeritus Group, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department of Physics;

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oe-28-21-30784.pdf
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Citation

Dirmeier, T., Tiedau, J., Khan, I., Ansari, V., Müller, C. R., Silberhorn, C., et al. (2020). Distillation of squeezing using an engineered pulsed parametric down-conversion source. Optics Express, 28(21), 30784-30796. doi:10.1364/OE.402178.


Cite as: https://hdl.handle.net/21.11116/0000-0009-C16E-2
Abstract
Hybrid quantum information processing combines the advantages of discrete and continues variable protocols by realizing protocols consisting of photon counting and homodyne measurements. However, the mode structure of pulsed sources and the properties of the detection schemes often require the use of optical filters in order to combine both detection methods in a common experiment. This limits the efficiency and the overall achievable squeezing of the experiment. In our work, we use photon subtraction to implement the distillation of pulsed squeezed states originating from a genuinely spatially and temporally single-mode parametric down-conversion source in non-linear waveguides. Due to the distillation, we witness an improvement of 0.17 dB from an initial squeezing value of −1.648 ± 0.002 dB, while achieving a purity of 0.58, and confirm the non-Gaussianity of the distilled state via the higher-order cumulants. With this, we demonstrate the source’s suitability for scalable hybrid quantum network applications with pulsed quantum light.