Fig. 1: Schematic of the experimental setup including a spectrally-multiplexed photon pair source, a VIPA-based demultiplexer for mapping spectral modes to distinct spatial channels, and a Tm3+:LiNbO3-based spectral filter: APD - avalanche photodiode; DDG - digital delay generator; SNSPD - superconducting nanowire single photon detector; AD - achromatic Doublet (focusing lens coupling the output beam into collection fiber). | npj Quantum Information

Fig. 1: Schematic of the experimental setup including a spectrally-multiplexed photon pair source, a VIPA-based demultiplexer for mapping spectral modes to distinct spatial channels, and a Tm3+:LiNbO3-based spectral filter: APD - avalanche photodiode; DDG - digital delay generator; SNSPD - superconducting nanowire single photon detector; AD - achromatic Doublet (focusing lens coupling the output beam into collection fiber).

From: Towards a spectrally multiplexed quantum repeater

Fig. 1

CyL1, CyL2 and CyL3 are cylindrical lenses with f = –50 mm, 200 mm and 150 mm, respectively.

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