Reference-frame-independent quantum key distribution

By Anthony Laing, Valerio Scarani, John G. Rarity, Jeremy Lloyd O'Brien. 2010

176 citations recorded by the source corpus.

We describe a quantum key distribution protocol based on pairs of entangled qubits that generates a secure key between two partners in an environment of unknown and slowly varying reference frame. A direction of particle delivery is required, but the phases between the computational basis states need not be known or fixed. The protocol can simplify the operation of existing setups and has immediate applications to emerging scenarios such as earth-to-satellite links and the use of integrated photonic waveguides. We compute the asymptotic secret key rate for a two-qubit source, which coincides with the rate of the six-state protocol for white noise. We give the generalization of the protocol to higher-dimensional systems and detail a scheme for physical implementation in the three-dimensional qutrit case.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/ae3a2c7bbadedad14ffe1ec8bdeb7de5b3ce57b1

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges (2019, background): “the corestheresultisalongﬁberinterferometer. Apossiblesolutionistheuseofphase-lockedloopsystemsable tocompensateforphasedriftsinreal-time,asproved in[164],ortheuseofreference-frameindependentprotocols[165]. Multimode ﬁbers –Aﬁnalapproachisrepresentedby theuseofmultimodeﬁbers. Traditionally,ﬁbershave”
Chip-based quantum key distribution (2015, methodology): “These devices could be readily adapted to implement more protocols, such as the reference-frame independent and measurement-device independent QKD protocols [27, 28].”