Phase-Matching Quantum Cryptographic Conferencing

Abstract

Quantum cryptographic conferencing (QCC) holds promise for distributing information-theoretic secure keys among multiple users over long distance. Limited by the fragility of Greenberger-Horne-Zeilinger (GHZ) state, QCC networks based on directly distributing GHZ states at long distance still face big challenge. Another two potential approaches are measurement device independent QCC and conference key agreement with single-photon interference, which was proposed based on the post-selection of GHZ states and the post-selection of W state, respectively. However, implementations of the former protocol are still heavily constrained by the transmission rate $\eta$ of optical channels and the complexity of the setups for post-selecting GHZ states. Meanwhile, the latter protocol cannot be cast to a measurement device independent prepare-and-measure scheme. Combining the idea of post-selecting GHZ state and recently proposed twin-field quantum key distribution protocols, we report a QCC protocol based on weak coherent state interferences named phase-matching quantum cryptographic conferencing, which is immune to all detector side-channel attacks. The proposed protocol can improve the key generation rate from $\mathrm{O}({\eta }^N)$ to $\mathrm{O}({\eta }^{N-1})$ compared with the measurement device independent QCC protocols. Meanwhile, it can be easily scaled up to multiple parties due to its simple setup.

References in corpus (40)

• The Quantum Internet
• Three qubits can be entangled in two inequivalent ways
• Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
• Bell nonlocality
• Quantum metrology
• Decoy State Quantum Key Distribution
• Measurement-device-independent quantum key distribution
• Unconditional Security Of Quantum Key Distribution Over Arbitrarily Long Distances
• Multi-photon entanglement and interferometry
• General Benchmarks for Quantum Repeaters
• Fundamental Limits of Repeaterless Quantum Communications
• Quantum Computing
• Overcoming the rate-distance barrier of quantum key distribution without using quantum repeaters
• 14-qubit entanglement: creation and coherence
• Measurement device independent quantum key distribution over 404 km optical fibre
• Satellite-relayed intercontinental quantum network
• A Multiparticle Generalization of Entanglement Swapping
• Side-channel-free quantum key distribution
• Monogamy of entanglement and other correlations
• Experimental ten-photon entanglement
• 10-qubit entanglement and parallel logic operations with a superconducting circuit
• 18-qubit entanglement with photon's three degrees of freedom
• Sending or not sending: twin-field quantum key distribution with large misalignment error
• Long term performance of the SwissQuantum quantum key distribution network in a field environment
• Experimental quantum key distribution beyond the repeaterless secret key capacity
• Phase-Matching Quantum Key Distribution
• Is Entanglement Monogamous?
• Experimental Twin-Field Quantum Key Distribution Through Sending-or-Not-Sending
• Twin-field Quantum Key Distribution without Phase Post-Selection
• Surpassing the rate-transmittance linear bound of quantum key distribution
• Long-Distance Measurement-Device-Independent Multiparty Quantum Communication
• Proof-of-principle experimental demonstration of twin-field type quantum key distribution
• Practical aspects of measurement-device-independent quantum key distribution
• Simple security analysis of phase-matching measurement-device-independent quantum key distribution
• Beating the fundamental rate-distance limit in a proof-of-principle quantum key distribution system
• Sending-or-not twin-field quantum key distribution in practice
• Conference key agreement with single-photon interference
• Symmetry-protected privacy: beating the rate-distance linear bound over a noisy channel
• Practical decoy-state method for twin-field quantum key distribution
• Simulating single photons with realistic photon sources

Cited by in corpus (24)

• Device-independent quantum secure direct communication with single photon sources
• Experimental quantum conference key agreement
• Experimental Demonstration of Sequential Multiparty Quantum Secret Sharing and Quantum Conference Key Agreement
• Coherent one-way quantum conference key agreement based on twin field
• Long-distance twin-field quantum key distribution with entangled sources
• Finite-key Analysis for Quantum Conference Key Agreement with Asymmetric Channels
• Breaking universal limitations on quantum conference key agreement without quantum memory
• Scalable High-Rate Twin-Field Quantum Key Distribution Networks without Constraint of Probability and Intensity
• Repeater-like asynchronous measurement-device-independent quantum conference key agreement
• Overcoming fundamental bounds on quantum conference key agreement
• Integrated quantum communication network and vibration sensing in optical fibers
• Finite-Key Analysis for Coherent One-Way Quantum Key Distribution
• Recent advances on quantum key distribution overcoming the linear secret key capacity bound
• Multi-field quantum conferencing overcomes the network capacity limit
• Experimental Measurement-Device-Independent Quantum Cryptographic Conferencing
• Continuous-variable measurement device independent quantum conferencing with post-selection
• Simple Proof of Security of the multiparty Prepare and Measure QKD
• Twin-field-based multi-party quantum key agreement
• Efficient source-independent quantum conference key agreement
• Open-destination measurement-device-independent quantum key distribution network
• Experimental Efficient Source-Independent Quantum Conference Key Agreement
• Experimental Phase-Matching Quantum Cryptographic Conferencing in Symmetric and Asymmetric Fiber Channels
• Spanning-tree-packing protocol for conference key propagation in quantum networks
• Optimal Verification of the Bell State and Greenberger-Horne-Zeilinger States in Untrusted Quantum Networks