These event horizons don't cause matter to disappear from the universe, but they might potentially create hawking radiation. The idea is to use a chain of SQUID devices to create a moving magnetic pulse that pushes along photons. Like salmon swimming up stream, if the pulses move along fast enough, the photons can not escape, except by quantum tunneling. This should produce hawking radiation the same way hawking radiation is, in theory, produced by the event horizion of a black hole.

Cool idea.

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