Work

Overcoming the Hong-Ou-Mandel interference limitation for the second photon from a two-photon cascade

Year: 2026

Type: preprint

Abstract: Quantum emitters such as semiconductor quantum dots can provide entangled photon pairs emitting from a system of cascaded states. However, the resulting temporal correlation between the two photons from the three-level ladder system has been shown to set a limit on the achievable two-photon interference. In this work, we show that such limitation, for photons emitted by the second transition, is only due to reduced temporal overlap at the interference beam splitter. We investigate this theoretically and experimentally by determining time-resolved four-photon coincidences between two successively emitted photon pairs. Post-emission synchronization shows the recovery of maximum interference visibility; in prospective quantum networks this could be achieved via deterministic quantum memories.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.24858

Authors: Joos, Raphael, Vyvlecka, Michal, Strobel, Tim, Breiholz, Benjamin, Aglarci, Furkan, Vijayan, Ponraj, Babin, Hans-Georg, Ludwig, Arne, Jetter, Michael, Portalupi, Simone L., Michler, Peter

Institutions: Ruhr University Bochum, University of Stuttgart, Center for Integrated Quantum Science and Technology

Language: English

Topic: Semiconductor Quantum Structures and Devices

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: QuantERA, Horizon 2020 Framework Programme

Awards: G4901604248, G5271502856, G575169067

OpenAlex ID: W7214024083

Cites: 2

Cited by:

Related to: 10