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Updated: Mar 2, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Experimental test of photonic entanglement in accelerated reference frames.
Matthias Fink1, Ana Rodriguez-Aramendia1, Johannes Handsteiner1
1Institute for Quantum Optics and Quantum Information-Vienna (IQOQI), Austrian Academy of Sciences, Boltzmanngasse 3, Vienna A-1090, Austria.
Researchers experimentally tested how acceleration affects quantum entanglement in photons. They found an upper bound for uniform acceleration
Area of Science:
- Quantum physics
- Quantum optics
- Relativity
Background:
- Unifying relativity and quantum mechanics remains a major challenge.
- Quantum optics experiments now allow studying quantum systems under acceleration.
- Investigating quantum phenomena in non-inertial frames is crucial.
Purpose of the Study:
- To experimentally investigate the impact of uniform acceleration on photonic entanglement.
- To derive an upper bound for the effects of acceleration on quantum entanglement.
Main Methods:
- Utilizing quantum optics to expose entangled photon pairs to controlled accelerations.
- Measuring an entanglement witness across a range of g-values (30 mg to 30 g).
- Conducting experiments using free-fall and a spinning centrifuge.
Main Results:
- Demonstrated the ability to measure entanglement under varying accelerations.
- Derived an empirical upper bound on the influence of uniform acceleration on photonic entanglement.
- Provided experimental data for theoretical models of quantum systems in non-inertial frames.
Conclusions:
- Uniform acceleration has a measurable effect on photonic entanglement.
- The study sets an experimental precedent for probing quantum mechanics in accelerated frames.
- Results contribute to understanding the interplay between quantum mechanics and gravity.
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