Usage Guide

This simulator allows users to explore quantum key distribution (QKD) protocols in a configurable network environment. The system is designed to be interactive and intuitive, with visual feedback at each step.

Node Selection

Users can select up to 6 nodes to include in the QKD network. Each node corresponds to a city in India.

• Cities are displayed on an interactive map of India.
• Clicking on a city adds it to the network.
• The simulator calculates distances between selected cities to model realistic fiber-optic transmission losses.

Topology Selection

After selecting the nodes, users can choose a network topology to define how the nodes are connected. Available topologies include:

• Star
  A central node connected to all others.

• Mesh
  All nodes are directly connected to each other.

• Ring
  Each node is connected to two others, forming a closed loop. Each edge (i.e., connection between two nodes) can be assigned a QKD protocol to simulate. Supported protocols include:

• BB84

• COW
• DPS

The selected protocol will determine how key bits are generated and transmitted between nodes.

Simulation and Output

Once nodes, topology, and protocols are selected, the simulator runs a complete QKD session over the network. Output metrics are displayed in real time on the page, including:

• QBER (Quantum Bit Error Rate)
• Key rate
• Sender's last sent bits
• Receiver's last received bits