Quantum Conference Key Agreement: A Review

Abstract

Conference key agreement (CKA), or multipartite key distribution, is a cryptographic task where more than two parties wish to establish a common secret key. A composition of bipartite quantum key distribution protocols can accomplish this task. However, the existence of multipartite quantum correlations allows for new and potentially more efficient protocols, to be applied in future quantum networks. Here, we review the existing quantum CKA protocols based on multipartite entanglement, both in the device-dependent and the device-independent scenario.

15 pages, 4 figures. Contribution to special issue "Advancing quantum technologies - chances and challenges" of Advanced Quantum Technologies. v2: small changes, new citations included, close to the published version

References in corpus (93)

• Quantum entanglement
• Quantum Computing in the NISQ era and beyond
• The Quantum Internet
• Three qubits can be entangled in two inequivalent ways
• Good Quantum Error-Correcting Codes Exist
• Entanglement detection
• Measurement-device-independent quantum key distribution
• Satellite-to-ground quantum key distribution
• Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
• Quantum metrology with nonclassical states of atomic ensembles
• Multi-photon entanglement and interferometry
• Scalable multi-particle entanglement of trapped ions
• Multiple Particle Interference and Quantum Error Correction
• Overcoming the rate-distance barrier of quantum key distribution without using quantum repeaters
• Field test of quantum key distribution in the Tokyo QKD Network
• 14-qubit entanglement: creation and coherence
• Distillation of secret key and entanglement from quantum states
• Atom chip based generation of entanglement for quantum metrology
• Optimal eavesdropping in quantum cryptography with six states
• Quantum spin squeezing
• Satellite-relayed intercontinental quantum network
• A convergent hierarchy of semidefinite programs characterizing the set of quantum correlations
• Side-channel-free quantum key distribution
• The operational meaning of min- and max-entropy
• Tight Finite-Key Analysis for Quantum Cryptography
• Experimental ten-photon entanglement
• Bounding the set of quantum correlations
• Provably Secure and Practical Quantum Key Distribution over 307 km of Optical Fibre
• High-rate quantum cryptography in untrusted networks
• Detecting genuine multipartite continuous-variable entanglement
• The Uncertainty Relation for Smooth Entropies
• 10-qubit entanglement and parallel logic operations with a superconducting circuit
• Observation of eight-photon entanglement
• 12-photon entanglement and scalable scattershot boson sampling with optimal entangled-photon pairs from parametric down-conversion
• Secure device-independent quantum key distribution with causally independent measurement devices
• Long term performance of the SwissQuantum quantum key distribution network in a field environment
• Multi-photon entanglement in high dimensions
• Post-selection technique for quantum channels with applications to quantum cryptography
• Distributing Secret Keys with Quantum Continuous Variables: Principle, Security and Implementations
• Secure key from bound entanglement
• Quantum Information Processing with Finite Resources -- Mathematical Foundations
• Leftover Hashing Against Quantum Side Information
• A Fully Quantum Asymptotic Equipartition Property
• Classification of multi-qubit mixed states: separability and distillability properties
• Security Proof for Quantum Key Distribution Using Qudit Systems
• Separability and distillability of multiparticle quantum systems
• Security of continuous-variable quantum key distribution via a Gaussian de Finetti reduction
• Detecting multiparticle entanglement of Dicke states
• Spatial entanglement patterns and Einstein-Podolsky-Rosen steering in a Bose-Einstein condensate
• Multi-Particle Entanglement Purification Protocols
• Quantum Communication between N partners and Bell's inequalities
• Spatially distributed multipartite entanglement enables Einstein-Podolsky-Rosen steering of atomic clouds
• Long-Distance Measurement-Device-Independent Multiparty Quantum Communication
• Genuine 12-qubit entanglement on a superconducting quantum processor
• Quantifying entanglement resources
• Entanglement between two spatially separated atomic modes
• Long-distance quantum key distribution in optical fiber
• Long-distance quantum key distribution secure against coherent attacks
• Multi-partite entanglement speeds up quantum key distribution in networks
• Memory Attacks on Device-Independent Quantum Cryptography
• General paradigm for distilling classical key from quantum states
• A largely self-contained and complete security proof for quantum key distribution
• The maximally entangled set of multipartite quantum states
• Light-matter entanglement over 50 km of optical fibre
• Entropy accumulation
• A de Finetti representation for finite symmetric quantum states
• Entanglement between a diamond spin qubit and a photonic time-bin qubit at telecom wavelength
• Modular architectures for quantum networks
• Quantum network routing and local complementation
• Concise and Tight Security Analysis of the Bennett-Brassard 1984 Protocol with Finite Key Lengths
• Fully device independent Conference Key Agreement
• Continuous-variable measurement-device-independent multipartite quantum communication
• Universal Limitations on Quantum Key Distribution over a Network
• Variable Potentials for Thermalized Light and Coupled Condensates
• Key distillation from quantum channels using two-way communication protocols
• Conference key agreement with single-photon interference
• Finite-key effects in multi-partite quantum key distribution protocols
• Security of quantum key distribution protocols using two-way classical communication or weak coherent pulses
• Quantum Key Distribution between N partners: optimal eavesdropping and Bell's inequalities
• Layered Quantum Key Distribution
• Cryptographic security of quantum key distribution
• Quantum multiparty key distribution protocol without use of entanglement
• Large-scale quantum networks based on graphs
• Towards a realization of device-independent quantum key distribution
• Quantum Router with Network Coding
• Modular network for high-rate quantum conferencing
• Multipartite secret key distillation and bound entanglement
• Multipartite entanglement generation and contextuality tests using non-destructive three-qubit parity measurements
• A Genuine Multipartite Bell Inequality for Device-independent Conference Key Agreement
• Quantum states representing perfectly secure bits are always distillable
• Multiparty key distribution and secret sharing based on entanglement swapping
• A brief introduction to multipartite entanglement
• Comment on "Fully device-independent conference key agreement" [Phys. Rev. A 97, 022307 (2018)]

Cited by in corpus (89)

• Quantum repeaters: From quantum networks to the quantum internet
• Quantum networks with neutral atom processing nodes
• A Quantum Repeater Node Demonstrating Unconditionally Secure Key Distribution
• Distributing Multipartite Entanglement over Noisy Quantum Networks
• Security of device-independent quantum key distribution protocols: a review
• Anonymous Quantum Conference Key Agreement
• Analysis of Multipartite Entanglement Distribution using a Central Quantum-Network Node
• Activation of genuine multipartite entanglement: Beyond the single-copy paradigm of entanglement characterisation
• Conference key agreement in a quantum network
• Experimental Demonstration of Sequential Multiparty Quantum Secret Sharing and Quantum Conference Key Agreement
• Device-independent lower bounds on the conditional von Neumann entropy
• Coherent one-way quantum conference key agreement based on twin field
• Secure Anonymous Conferencing in Quantum Networks
• Genuine multipartite entanglement of quantum states in the multiple-copy scenario
• Anonymous and secret communication in quantum networks
• Finite-key Analysis for Quantum Conference Key Agreement with Asymmetric Channels
• Influence of noise in entanglement-based quantum networks
• Multimode Squeezed State for Reconfigurable Quantum Networks at Telecommunication Wavelengths
• High key rate quantum conference key agreement with unconditional security
• Robust Self-Testing of Multiparticle Entanglement
• Mixed State Entanglement Classification using Artificial Neural Networks
• Overcoming fundamental bounds on quantum conference key agreement
• Extracting GHZ states from linear cluster states
• Quantum randomness generation via orbital angular momentum modes crosstalk in a ring-core fiber
• Fundamental limitations on the device-independent quantum conference key agreement
• Boosting device-independent cryptography with tripartite nonlocality
• Connecting Quantum Cities: Simulation of a Satellite-Based Quantum Network
• Quantum cryptography beyond key distribution: theory and experiment
• ReQuSim: Faithfully simulating near-term quantum repeaters
• Quantum Internet: Technologies, Protocols, and Research Challenges
• Genuine multipartite nonlocality with causal-diagram postselection
• Certifying the Topology of Quantum Networks: Theory and Experiment
• Genuine multipartite entanglement is not a precondition for secure conference key agreement
• Multi-field quantum conferencing overcomes the network capacity limit
• Experimental entanglement generation using multiport beam splitters
• Experimental anonymous quantum conferencing
• Anonymous conference key agreement in linear quantum networks
• Experimental Measurement-Device-Independent Quantum Cryptographic Conferencing
• Aging and Reliability of Quantum Networks
• Multipartite Intrinsic Non-Locality and Device-Independent Conference Key Agreement
• Resource-efficient simulation of noisy quantum circuits and application to network-enabled QRAM optimization
• Experimental anonymous conference key agreement using linear cluster states
• Generating Greenberger-Horne-Zeilinger states using multiport splitters
• Local and scalable detection of genuine multipartite single-photon path entanglement
• Entanglement-Based Artificial Topology: Neighboring Remote Network Nodes
• Continuous-variable measurement device independent quantum conferencing with post-selection
• Imperfect quantum networks with tailored resource states
• Heralding Higher-Dimensional Bell and Greenberger-Horne-Zeilinger States Using Multiport Splitters
• Twin-field-based multi-party quantum key agreement
• Efficient source-independent quantum conference key agreement
• Optimization of Quantum-Repeater Networks using Stochastic Automatic Differentiation
• Training iterated protocols for distillation of GHZ states with variational quantum algorithms
• New Protocols for Conference Key and Multipartite Entanglement Distillation
• Quantum network-entanglement measures
• Entanglement-induced collective many-body interference
• Collective attack free controlled quantum key agreement without quantum memory
• Indefinite causal key distribution
• Coincidence postselection for genuine multipartite nonlocality: Causal diagrams and threshold efficiencies
• A scheme for multipartite entanglement distribution via separable carriers
• Experimental Efficient Source-Independent Quantum Conference Key Agreement
• Entanglement-assisted authenticated BB84 protocol
• Observation of quantum nonlocality in Greenberger-Horne-Zeilinger entanglement on a silicon chip
• The Influence of Experimental Imperfections on Photonic GHZ State Generation
• Efficient Quantum Secret Sharing Scheme Based On Monotone Span Program
• Graph state extraction from two-dimensional cluster states
• Device-Independent Certification of Multipartite Distillable Entanglement
• Quantum-private distributed sensing
• Exposure of subtle multipartite quantum nonlocality
• Emulation of satellite up-link quantum communication with entangled photons
• Multipartite multiplexing strategies for quantum routers
• Anonymous Conference Key Agreement in Quantum Networks
• Hybrid Quantum Cryptography from Communication Complexity
• Guarantees on the structure of experimental quantum networks
• Distinguishing Graph States by the Properties of Their Marginals
• Security analysis method for practical quantum key distribution with arbitrary encoding schemes
• Multi-user QKD using quotient graph states derived from continuous-variable dual-rail cluster states
• A resource- and computationally-efficient protocol for multipartite entanglement distribution in Bell-pair networks
• Genuine multipartite entanglement is not necessary for standard device-independent conference key agreement
• Entanglement percolation in random quantum networks
• Quantum Key Distribution with Imperfections: Recent Advances in Security Proofs
• Experimental Phase-Matching Quantum Cryptographic Conferencing in Symmetric and Asymmetric Fiber Channels
• Secure communication over generalised quantum multiple access channels
• Linear Optical Schemes to Postselect High-Dimensional Dicke States
• Efficient simulation of noisy entanglement generation
• Spanning-tree-packing protocol for conference key propagation in quantum networks
• The Richness of Bell Nonlocality: Generalized Bell Polygamy and Hyper-Polygamy
• Quantum communications infrastructure architecture: theoretical background, network structure and technologies. A review of recent studies from a European public infrastructure perspective
• Distillation of multipartite entangled states for arbitrary subsets of parties in noisy quantum networks of increasing size
• Sharing classical secrets with continuous-variable entanglement: Composable security and network coding advantage