Experimental Measurement-Device-Independent Quantum Cryptographic Conferencing
arXiv:2411.14890 · doi:10.1103/PhysRevLett.134.040802
Abstract
Quantum cryptographic conferencing (QCC) allows sharing secret keys among multiple distant users and plays a crucial role in quantum networks. Because of the fragility and low generation rate of genuine multipartite entangled states required in QCC, realizing and extending QCC with the entanglement-based protocol is challenging. Measurement-device-independent (MDI) QCC, which removes all detector side channels, is a feasible long-distance quantum communication scheme to practically generate multipartite correlation with multiphoton projection measurement. Here we experimentally realize the three-user MDIQCC protocol with four-intensity decoy-state method, in which we employ the polarization encoding and the Greenberger-Horne-Zeilinger state projection measurement. Our work demonstrates the experimental feasibility of the MDI QCC, which lays the foundation for the future realization of quantum networks with multipartite communication tasks.
References in corpus (44)
- Quantum Cryptography
- The Quantum Internet
- The Security of Practical Quantum Key Distribution
- Decoy State Quantum Key Distribution
- Measurement-device-independent quantum key distribution
- Advances in Quantum Cryptography
- Quantum Key Distribution with High Loss: Toward Global Secure Communication
- Device-independent security of quantum cryptography against collective attacks
- Secure quantum key distribution with realistic devices
- Beating the PNS attack in practical quantum cryptography
- Multi-photon entanglement and interferometry
- Overcoming the rate-distance barrier of quantum key distribution without using quantum repeaters
- Side-channel-free quantum key distribution
- Entanglement-based wavelength multiplexed quantum communication network
- Experimental Twin-Field Quantum Key Distribution Over 1000 km Fiber Distance
- High-rate quantum key distribution exceeding 110 Mb/s
- A trusted-node-free eight-user metropolitan quantum communication network
- Breaking the Rate-Loss Bound of Quantum Key Distribution with Asynchronous Two-Photon Interference
- Making the decoy-state measurement-device-independent quantum key distribution practically useful
- Single Qubit Quantum Secret Sharing
- Long-Distance Measurement-Device-Independent Multiparty Quantum Communication
- Quantum key distribution surpassing the repeaterless rate-transmittance bound without global phase locking
- Multi-partite entanglement speeds up quantum key distribution in networks
- Experimental Quantum Secret Sharing and Third-Man Quantum Cryptography
- Experimental demonstration of four-party quantum secret sharing
- Experimental demonstration of graph-state quantum secret sharing
- Quantum Conference Key Agreement: A Review
- Improved key rate bounds for practical decoy-state quantum key distribution systems
- Experimental quantum conference key agreement
- Hybrid entanglement of three quantum memories with three photons
- Realizing an entanglement-based multi-user quantum network with integrated photonics
- Conference key agreement with single-photon interference
- Quantum teleportation of shared quantum secret
- Finite-key effects in multi-partite quantum key distribution protocols
- Higher key rate of measurement-device-independent quantum key distribution through joint data processing
- Conference key agreement in a quantum network
- Multipartite secret key distillation and bound entanglement
- Coherent one-way quantum conference key agreement based on twin field
- Phase-Matching Quantum Cryptographic Conferencing
- High key rate quantum conference key agreement with unconditional security
- Overcoming fundamental bounds on quantum conference key agreement
- Genuine multipartite entanglement is not a precondition for secure conference key agreement
- Multi-field quantum conferencing overcomes the network capacity limit
- Equitable multiparty quantum communication without a trusted third party
Cited by in corpus (5)
- Repeater-like asynchronous measurement-device-independent quantum conference key agreement
- Experimental Coherent One-Way Quantum Key Distribution with Simplicity and Practical Security
- Indefinite causal key distribution
- Experimental Phase-Matching Quantum Cryptographic Conferencing in Symmetric and Asymmetric Fiber Channels
- Spanning-tree-packing protocol for conference key propagation in quantum networks