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

Dirmeier T, Tiedau J, Khan I, Ansari V, Müller C, Silberhorn C, Marquardt C, Leuchs G (2020)

Publication Language: English

Publication Type: Journal article

Publication year: 2020

Journal

Optics Express Optical Society of America

Book Volume: 28

Pages Range: 30784-30796

Journal Issue: 21

DOI: 10.1364/OE.402178

Open Access Link: https://opg.optica.org/oe/fulltext.cfm?uri=oe-28-21-30784&id=440189

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. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Authors with CRIS profile

Christian Müller Lehrstuhl für Experimentalphysik (Optik) Christoph Marquardt Institut für Optik, Information und Photonik Gerhard Leuchs Lehrstuhl für Experimentalphysik (Optik)

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE) Universität Paderborn DE Germany (DE)

How to cite

APA:

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

MLA:

Dirmeier, Thomas, et al. "Distillation of squeezing using an engineered pulsed parametric down-conversion source." Optics Express 28.21 (2020): 30784-30796.

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