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Q: Fachverband Quantenoptik und Photonik

Q 48: Quantum Information (Quantum Communication and Quantum Repeater) II

Q 48.3: Vortrag

Donnerstag, 12. März 2020, 14:45–15:00, e001

Bell measurement using entangled telecom photons with ancilla qubits — •Nico Sieber, Matthias Bayerbach, Nico Hauser, Daniel Bhatti, and Stefanie Barz — Institute for Functional Matter and Quantum Technologies, University of Stuttgart

Photonic devices are key to a large range of quantum technologies, for example quantum communication and wider quantum networks. When transmitting quantum information over long distances, minimizing losses is crucial to any quantum protocols. Thus, the favourable wavelength is in the telecom regime 1550 nm). Many quantum protocols thus rely on pure and indistinguishable photons at this wavelength. Here we demonstrate the generation of entanglement in this wavelength regime using a parametric down-conversion photon pair source in a linear configuration which will be sent, together with ancilliary states, through a network of linear elements.