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Updated: Jan 20, 2026
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Deterministic Generation of Large-Scale Entangled Photonic Cluster State from Interacting Solid State Emitters.
Mercedes Gimeno-Segovia1,2, Terry Rudolph2, Sophia E Economou3
1Quantum Engineering Technology Labs, H. H. Wills Physics Laboratory and Department of Electrical and Electronic Engineering, University of Bristol, BS8 1FD, United Kingdom.
Researchers demonstrate deterministic multiphoton entanglement for quantum computing using solid-state emitters. This method bypasses two-qubit gates, enabling scalable cluster state generation with quantum dots.
Area of Science:
- Quantum Information Science
- Solid-State Physics
Background:
- Measurement-based quantum computing relies on highly entangled cluster states.
- Generating these states deterministically is a significant challenge in quantum information science.
Purpose of the Study:
- To present a general, deterministic method for creating multiphoton entanglement.
- To enable the generation of two-dimensional cluster states using solid-state quantum emitters.
Main Methods:
- Utilizing the inherent exchange interaction between coupled quantum emitters.
- Implementing single-qubit operations in conjunction with the exchange interaction.
- Leveraging existing experimental capabilities with quantum dots.
Main Results:
- Demonstrated deterministic creation of multiphoton entanglement without two-qubit gates.
- Showcased a method applicable to non-identical quantum emitters.
- Provided a recipe for generating two-dimensional cluster-state entangled photons.
Conclusions:
- This approach offers a scalable pathway to generating essential cluster states for quantum computing.
- The method is compatible with current quantum dot technology, facilitating experimental implementation.
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