Related Experiment Video
Updated: Sep 19, 2025
07:56
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
8.6K
Experimental Certification of High-Dimensional Entanglement with Randomized Measurements
Ohad Lib1, Shuheng Liu2, Ronen Shekel1
1The Hebrew University of Jerusalem, Racah Institute of Physics, Jerusalem 91904, Israel.
Physical Review Letters
|June 18, 2025
Summary
We experimentally certified three-dimensional entanglement in a five-dimensional quantum state. This robust method works even with random rotations, enabling secure quantum communication over noisy channels.
Area of Science:
- Quantum Information Science
- Quantum Optics
- Experimental Physics
Background:
- High-dimensional entangled states offer superior information capacity and noise resilience over two-dimensional systems.
- Experimental certification of high-dimensional entanglement is challenging due to the large number of modes and sensitivity to random rotations.
Purpose of the Study:
- To experimentally certify three-dimensional entanglement in a five-dimensional two-photon state.
- To demonstrate the robustness of entanglement certification against random rotations and phase randomization.
- To develop a method for high-dimensional entanglement distribution through noisy channels without a common reference frame.
Main Methods:
- Utilized 800 Haar-random measurements implemented with a ten-plane programmable light converter.
- Employed a novel approach to certify entanglement despite arbitrary phase randomization of optical modes.
- Developed a reference-frame-independent certification protocol.
Main Results:
- Successfully certified three-dimensional entanglement in a five-dimensional two-photon state.
- Demonstrated the robustness of the certification method against random optical mode rotations.
- Showcased the ability to certify entanglement even with arbitrary phase randomization.
Conclusions:
- Experimental certification of high-dimensional entanglement is feasible using a large set of random measurements.
- The developed method is robust against noise and phase randomization, crucial for practical applications.
- This technique facilitates high-dimensional entanglement distribution over long-range, noisy quantum links without requiring a common reference frame.
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