quant-ph
Deterministic generation of a 20-qubit two-dimensional photonic cluster state
James O'Sullivan Kevin Reuer Aleksandr Grigorev Xi Dai Alonso Hernández-Antón Manuel H. Muñoz-Arias Christoph Hellings Alexander Flasby Dante Colao Zanuz Jean-Claude Besse Alexandre Blais Daniel Malz Christopher Eichler Andreas Wallraff