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Optical Components for Quantum Entanglement
 An
optical-based quantum information processing system utilizes entangled
photons to transmit, encode, and process enormous amount of data. Such
entangle photons can be generated by spontaneous parametric down conversion
(SPDC) in second-order nonlinear optical crystals.
Newlight Photonics Inc.
has developed a series of optical components for generation, measurement, and
manipulation of
entangled photons.
The
standard optical parts for 405nm pumped SPDC
BBO Crystals,
BiBO Crystals
 for
non-collinearly
phasematched degenerated SPDC
Paired
BBO Crystals,
BiBO Crystals,
mounted back-to-back with
one crystal rotated by 90 degree about
axis normal to incident face.
BBO Crystals,
BiBO Crystals
for highly efficient frequency doubling to blue for SPDC pump
Broadband Mirrors for pump or
signal/idler beam steering
Calcite, YVO4,
or a-BBO
Beam Displacers with
a maximum beam separation > 4mm
Polarizing Beamsplitter
Cubes for 90 deg deviation of polarized beams
Rochon Polarizers
for a large beam separation (~ 15 degree)
Glan-Thompson Beam Splitter
for a very large beam separation (~ 45 degree)
Glan Polarizers for
pump polarization and signal analysis
Quarter (QWP) and Half (HWP) Waveplates
for polarization control
Quartz,
α-BBO,
Calcite
time delay compensator
Quartz,
α-BBO,
Calcite
birefringent plates
for retardation adjustment
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