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Is this like Wheeler's Delayed Choice experiment?

No. This is a quantum system that evolves from a state A to a state B, then is exposed to a very specifically designed potential field that causes it to evolve back to state A. It's actually not that mysterious nor unexpected, just an impressive technical achievement.

For an accessible description of what is going on here see:

http://blog.rongarret.info/2014/10/parallel-universes-and-ar...

I appreciate the link, but fair warning to others - it has a prerequisite of reading three other postings for complete comprehension per the article.

Three? I only count one. (BTW, I'm the author.)

But yes, you do need to understand entanglement and how it relates to measurement before you can understand time reversal. There's a reason QM has a reputation for being a difficult topic.

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