Complete architectural implementation of a full scale quantum repeater
- Bell-Pairs creation
- several Bell-Pairs are created between adjacent nodes through entanglement distribution.
- Entanglement Purification
- if necessary purification may be performed.
- Entanglement swapping
- two adjacent nodes with high fidelity qubits undergo swapping to produce a longer link.
- If the destination is yet; the operatiosn from Step
$2$ and Step$3$ are repeated sequentially until destination node and sender's node are linked.
One quantum repeater is needed for every two parties communicating - a two part channel - fragmented omce into two parts.
Fragment the channel twice, you get three parts. (p = f + 1). Consequently, two quantum repeaters.
Each quantum repeater uses 4 qubits, 2 are memeory qubits, 2 are swap channels represented as qubits. Three entanglement generators ate needed.
Below os the circuit implementation of the quantum repeater circuit architecture.
The quantum circuit code.
The circuit below implements Deutsch's purification protocol.
The circuit below implements Bennett's purification protocol
