Heidelberg 2015 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 31: Poster: Quantum Optics and Photonics II
Q 31.32: Poster
Dienstag, 24. März 2015, 17:00–19:00, C/Foyer
Time-resolved boson sampling for arbitrary distinguishabilities — •Simon Laibacher and Vincenzo Tamma — Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, D-89069 Ulm, Germany
Recently, the boson sampling problem (BSP) has drawn a lot of interest. It is formulated as the task to sample from the probability distribution of finding N single input bosons at the output of a linear interferometer. We present a description of the boson sampling setup in terms of correlation measurements. For this purpose, we consider single photons with an arbitrary spectral distribution and describe the full time-dependence of the output probabilities for correlated detections of N photons [1]. By integrating over all possible detection times, we obtain the detection probabilities for the original formulation of the BSP generalized to the case of arbitrary distinguishability between the photons. This allows us to describe the transition of the output probability distribution from the ideal case of completely indistinguishable particles to the classical case of complete distinguishability.
We further demonstrate how a similar formalism can be applied to describe Hanbury-Brown-Twiss correlation experiments of arbitrary order with thermal input states [2].
[1] V. Tamma and S. Laibacher, (2014), arXiv:1410.8121.
[2] V. Tamma and S. Laibacher, (2014), arXiv:1409.7426.