Wei-Jun Zhang

TL;DR: This record-breaking implementation of the MDIQKD method provides a new distance record and achieves a distance that the traditional Bennett-Brassard 1984 QKD would not be able to achieve with the same detection devices even with ideal single-photon sources.

TL;DR: The entanglement of two atomic-ensemble quantum memories via optical fibres, enabled by the use of cavity enhancement and quantum frequency conversion, is demonstrated over dozens of kilometres.

TL;DR: In this paper, a quantum key distribution network spread over a metropolitan area is shown to be secure against untrustworthy relays, where the relays are assumed to be untrusted.

TL;DR: In this paper, a phase-matching QKD scheme was proposed to achieve a secret key rate of 0.118bps with a 502 km ultralow-loss optical fiber.

TL;DR: In this paper, a twin-field QKD protocol was proposed for a 511 km long-haul fiber-optic network without a trusted relaying node, achieving a secure key rate around three orders of magnitude greater than that expected if the previous protocol was applied over the same length.