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Q: Fachverband Quantenoptik und Photonik

Q 48: Poster – Quantum Optics, Technologies, and Optomechanics

Q 48.9: Poster

Mittwoch, 12. März 2025, 17:00–19:00, Tent

Click boson sampling — •Sitotaw Eshete, Torsten Meier, Polina Sharapova, and Jan Sperling — Paderborn University, Paderborn, Germany

Linear optical networks are essential building blocks for developing commercially accessible quantum technologies. Our work's primary objective is to approximate the permanent computation in boson sampling using cutting-edge click detection systems, which are used for both input state and network-output detection. Each input mode's click detectors herald multiphoton states, which are produced by parametric down-conversion sources. Then, the output click-counting distribution can be expressed as a linear combination of determinants of certain coefficient matrices that are based on the unitary network matrix together with additional parameters that are pertinent to the detection system. To get close to the precise value of the desired permanent, an exponentially growing number of these determinants must be calculated.

Keywords: boson sampling; single-photon detection; parametric down-conversion