Related Experiment Video
Updated: May 28, 2026
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Quantum GHZ Multiplexer: Hierarchical Teleportation for 1→2n Quantum Networks
1Departamento de Sistemas de Información y Comunicaciones, Universidad Autónoma Metropolitana, Av. de las Garzas 10, El Panteón, Lerma de Villada 52005, Mexico.
Entropy (Basel, Switzerland)
|May 26, 2026
Summary
We developed a quantum multiplexer using Greenberger-Horne-Zeilinger (GHZ) states for deterministic qubit routing to multiple receivers. This architecture also enables hidden-destination communication and secure key distribution in quantum networks.
Area of Science:
- Quantum Information Science
- Quantum Communication Networks
- Quantum Entanglement
Background:
- Quantum routing typically requires complex, globally entangled states.
- Existing architectures face challenges in scalability and deterministic control.
- Near-term quantum networks need modular and locally generated entanglement solutions.
Purpose of the Study:
- Introduce a novel quantum multiplexer (GHZ MUX) architecture.
- Enable deterministic routing of unknown qubits to 2^n receivers.
- Explore hidden-destination communication and privacy-preserving protocols.
Main Methods:
- Utilize local tripartite Greenberger-Horne-Zeilinger (GHZ) states in a binary tree structure.
- Employ Bell-basis measurements and classical feed-forward for information propagation.
- Compose small GHZ clusters into a modular teleportation hierarchy.
Main Results:
- Achieved deterministic routing with full input-output connectivity.
- Demonstrated experimental feasibility for near-term quantum networks.
- Introduced the Hidden-Secret GHZ-Tree Routing (HS-GTR) protocol for secure communication.
Conclusions:
- The GHZ-tree architecture offers a scalable and modular solution for quantum switching.
- The HS-GTR protocol enhances privacy and supports secure key establishment.
- This work provides a building block for advanced distributed quantum networks.
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