Reference-Frame-Independent Measurement-Device-Independent Quantum Key Distribution with Uncharacterized Qubits

TL;DR

This paper introduces a novel quantum key distribution protocol that remains secure without requiring reference frame alignment or characterized qubits, suitable for channels with low error rates but large, uncontrolled rotations.

Contribution

It presents a new reference-frame-independent, measurement-device-independent quantum key distribution protocol using uncharacterized qubits, enhancing security and robustness.

Findings

Proves the security of the proposed protocol.

Applicable to channels with low bit error rate and large, slow unitary rotations.

Advances quantum cryptography by removing the need for precise reference frames.

Abstract

We propose a reference-frame-independent measurement-device-independent quantum key distribution with uncharacterized quantum bits. We show the security of the protocol. The protocol can also be useful for a channel that has a very low bit error rate but suffers a large, uncontrolled (but slow), unitary rotation.