qutools quED - Page 8

8 quED Manual www.qutools.com
Polarizer in
rotating mount
Longpass filter
Fiber coupler
PM fiber
Pump and
source
Figure 3: Architecture of the quED optical setup for the generation and collection of
polarization-entangled photon pairs. The pump laser and the actual crystal source is hidden
under the white cover for laser safety reasons. More details are displayed in
Figure 4.
Waveplate
Longpass filter
(pump block)
Slot for
alignment plate
Beam folding
mirror