A theoretical study advancing the composable security analysis of Gaussian quantum networks in finite-size regimes, introducing a novel parameter estimation methodology based on end-user data sharing, while demonstrating potential breakthroughs in surpassing the PLOB bound through quantum amplifier-assisted chains, though practical implementation remains challenging.
Quantum dot-based single-photon sources offer superior security for quantum cryptography through their unique combination of on-demand emission, high brightness, low multiphoton contribution, and tunable coherence in photon-number states, outperforming traditional Poisson-distributed sources across multiple cryptographic primitives.
Researchers have addressed the question of efficient implementation of quantum protocols, with small communication and entanglement, and short depth circuit for encoding or decoding.
Rigorous security proofs for continuous variable quantum key distribution systems with intensity fluctuating sources are presented, dividing implementations into multiple cases based on monitoring capabilities and adapting techniques like Gaussian extremality and tagging to enable secure key generation over 50+ kilometers without hardware modifications.
This research explores quantum relay technology in non-Markovian conditions, extending beyond traditional independent error models.
A team of researchers at QuTech – a collaboration between Delft University of Technology and TNO – is the first to have connected two quantum processors through an intermediate node and to have established shared entanglement between multiple stand-alone quantum processors.
Researchers have developed a QKD receiver chip featuring the full photonic circuitry needed for different time-based protocols, including single-photon detectors.
A team of researchers at Vienna Center for Quantum Science and Technology (VCQ) and Centre for Quantum Technologies, Singapore (CQT), has demonstrated homomorphic-encrypted quantum computing with unitary transformations of individual qubits, as well as multi-qubit quantum walk computations using single-photon states and non-birefringent integrated optics.
Sheffield University spin-out AegiQ has raised £1.4m (€1.5m) to build a semiconductor platform for quantum communications.
SIG, ID Quantique and ADVA announced today the implementation of the first quantum encrypted datacenter interconnection with QKD.
ITMO University researchers have developed a Quantum Key Distribution (QKD) system with coherent detection based on subcarrier wave quantum key distribution protocol.
Engineers at Caltech have shown that atoms in optical cavity could be foundational to the creation of a Quantum Internet.
An international team has developed a new method for generating quantum-entangled photons in a spectral range of light that was previously inaccessible.
Researchers at Bar-Ilan University demonstrated that long sequences with certified randomness by the US National Institute of Standard and Technology (NIST) are far from being truly random.
Researchers have developed a quantum communication chip that is 1,000 times smaller than current quantum setups, but offers the same superior security quantum technology is known for.
In September 2019, the European Commission (EC) announced the launch of OPENQKD, a €15 million worth project aimed to provide test quantum communication infrastructures in several European countries. Four Swiss Geneva-located firms, The University of […]
ABN AMRO and Qutech are working to develop a technology based on Quantum Key Distribution (QKD) to improve banking security.