# Mediated semi-quantum key distribution with improved efficiency

@article{Guskind2022MediatedSK, title={Mediated semi-quantum key distribution with improved efficiency}, author={Julia Guskind and Walter O. Krawec}, journal={Quantum Science \& Technology}, year={2022}, volume={7} }

Mediated semi-quantum key distribution involves the use of two end-users who have very restricted, almost classical, capabilities, who wish to establish a shared secret key using the help of a fully-quantum server who may be adversarial. In this paper, we introduce a new mediated semi-quantum key distribution protocol, extending prior work, which has asymptotically perfect efficiency. Though this comes at the cost of decreased noise tolerance, our protocol is backwards compatible with prior…

## 4 Citations

### Scalable Mediated Semi-quantum Key Distribution

- Computer Science, Mathematics
- 2022

This paper designs a circular M-SQKD protocol based on Bell states, which is an approach to realizing multiple “classical” users’ key distribution, and proves the protocol is unconditional security in the asymptotic scenario.

### Improved semi-quantum key distribution with two almost-classical users

- Computer Science, MathematicsQuantum Information Processing
- 2022

It is shown how this semi-quantum key distribution protocol may be extended to improve its efficiency and also its noise tolerance, and an extension which allows more communication rounds to be directly usable is discussed.

### Security Proof for Circular Mediated Semi-quantum Key Distribution

- Computer Science
- 2022

This paper designs a circular M-SQKD protocol based on Bell states and proves the protocol is unconditional security in the asymptotic scenario and has comparable noise tolerance and can realize key distribution between multiple “classical” users.

### Experimental Semi-quantum Key Distribution With Classical Users

- Computer Science, PhysicsQuantum
- 2022

This work demonstrates a novel quantum key distribution scheme, where users are fully classical, and deepens the understanding of the fundamental principles underlying quantum key Distribution and opens up new interesting possibilities for quantum cryptography networks.

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