Photonic quantum switch

An apparatus comprising:

• a plurality of outputs and an input to receive photons of an input entangled state;
• a first converter to convert the photons to entanglement components;
• a plurality of optical switches each receiving a different entanglement component and routing the different entanglement component to an optical switch output, wherein the entanglement components from the first converter are compatible with the plurality of optical switches;
• and
• a second converter to produce entangled photons in an output entangled state for a corresponding one of the plurality of outputs based on corresponding entanglement components from outputs of the plurality of optical switches.

An apparatus comprising:

• a first converter to convert photons to entanglement components, wherein the photons are in an input entangled state including one of a polarization entangled state, a time-bin entangled state, and a frequency-bin entangled state;
• a plurality of optical switches each receiving a different entanglement component and routing the different entanglement component to an optical switch output, wherein the entanglement components from the first converter are compatible with the plurality of optical switches;
• and
• a second converter to produce entangled photons in an output entangled state based on corresponding entanglement components from outputs of the plurality of optical switches, wherein the output entangled state includes one of a polarization entangled state, a time-bin entangled state, and a frequency-bin entangled state.