It is similar idea but it requires quantum computer. and only provide computation results. Deutsch also suggested testing MWI via some quantum computer setup. The closes idea is quantum bomb tester - and such tester can be used for inter-branch communications if we turn off the bomb in the worlds where we want to send 0.
The main difference is that here we can send real world macro data like trade results or even movies to another branch.
I suspect https://royalsocietypublishing.org/rspa/article-abstract/457/2009/1175/81027/Counterfactual-computation might be relevant.
It is similar idea but it requires quantum computer. and only provide computation results. Deutsch also suggested testing MWI via some quantum computer setup. The closes idea is quantum bomb tester - and such tester can be used for inter-branch communications if we turn off the bomb in the worlds where we want to send 0.
The main difference is that here we can send real world macro data like trade results or even movies to another branch.