SFWG Study Hall

I was wondering if anyone had heard about Bose-Einstein condensates. I was hoping to couple the ideas behind that and charged photons to create a world where a human can be imported into a line, like a phone wire, and travel a great distance. Then when they made it to their destination, they would be there in the past. Just a few seconds into the past, but still enough to make a differance. I was thinking of limiting the ability, by saying it costs vast amounts of energy. What do you think? Sound possible, even though it is a little farfetched? Any other ideas on limitations?

Any help, or thoughts will be appreiciated!
Thanks,
Bradly