- Two-photon state preparation
- Single-qubit quantum logic gate experiment
- CNOT quantum logic gate experiment
- DJ algorithm experiment
This system converts some of the incident photons into biphoton states through the spontaneous parametric down-conversion process in nonlinear crystals. Then, by combining wave plates, partial polarizing beam splitters, and other linear optical components, four types of D-J algorithm gate circuits are implemented. By rotating the angles of the wave plates and combining them with polarizing beam splitters, projection measurement results under different basis vectors are obtained, ultimately yielding the output state. This system can perform single-qubit quantum logic gate experiments, two-qubit quantum logic gate experiments, and Deutsch-Jozsa algorithm demonstrations.

When moving the horizontal displacement stage, it conforms to the corresponding curve.