The SwissQuantum network consists of three layers:

- Quantum Layer - This layer performs Quantum Key Exchange.

- Key Management Layer - This layer manages the quantum keys in key servers and provides secure key storage, as well as advanced functions (key transfer and routing).

- Application Layer - In this layer, various cryptographic services use the keys distributed to provide secure communications.

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SwissQuantum network structure.

QKD is a technology that allows to distribute keys over an optical network. As it operates at the physical layer, it is intrinsically point-to-point. The three-layer structure of the SwissQuantum network, with a key management layer interfacing the QKD with applications, allows to go beyond the point-to-point nature of this technology.

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