1. "For the first time, quantum entanglement of a single particle has been observed by researchers." -- No. This has been done many times previously. This is just the first time it's been done with the efficiency loophole closed. That's good, but not what the the reporter who wrote this thought. He'll probably write the same thing all over again the next time somebody repeats this type of experiment with one of the other loopholes closed.
2. "A single photon (particle of light), for example, can be split into two particles that are still connected " -- No. The photon is path entangled. It's still just one particle/wave.
3. "Using homodyne detectors -- that is, instruments that can measure waves and wave-like properties" -- This is hilariously imprecise.
If you're even remotely interested, do yourself a favor and check out the arXiv preprint posted by timnic. This cnet article is much worse than the usual low standard of journalism when it comes to QM.
1. "For the first time, quantum entanglement of a single particle has been observed by researchers." -- No. This has been done many times previously. This is just the first time it's been done with the efficiency loophole closed. That's good, but not what the the reporter who wrote this thought. He'll probably write the same thing all over again the next time somebody repeats this type of experiment with one of the other loopholes closed.
2. "A single photon (particle of light), for example, can be split into two particles that are still connected " -- No. The photon is path entangled. It's still just one particle/wave.
3. "Using homodyne detectors -- that is, instruments that can measure waves and wave-like properties" -- This is hilariously imprecise.
If you're even remotely interested, do yourself a favor and check out the arXiv preprint posted by timnic. This cnet article is much worse than the usual low standard of journalism when it comes to QM.