The authors derive the magnetic flux patterns a dc-SQUID array would need to simulate light propagation in a bouncing black-hole-white-hole spacetime, and argue the downstream configuration is the more practical one.
One-dimensional sections of exotic spacetimes with superconducting circuits
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abstract
We introduce analog quantum simulations of 1+1 dimensional sections of exotic 3+1 dimensional spacetimes, such as Alcubierre warp-drive spacetime, G\"{o}del rotating universe and Kerr highly-rotating black hole metric. Suitable magnetic flux profiles along a SQUID array embedded in a superconducting transmission line allow to generate an effective spatiotemporal dependence in the speed of light, which is able to mimic the corresponding light propagation in a dimensionally-reduced exotic spacetime. In each case, we discuss the technical constraints and find the optimal region of parameters for the experimental implementation.
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Analogue simulation of quantum gravity black hole models in a dc-SQUID array
The authors derive the magnetic flux patterns a dc-SQUID array would need to simulate light propagation in a bouncing black-hole-white-hole spacetime, and argue the downstream configuration is the more practical one.