Entangling Superconducting Qubits through an Analogue Wormhole

Abstract

We propose an experimental setup to test the effect of curved spacetime upon the extraction of entanglement from the quantum field vacuum to a pair of two-level systems. We consider two superconducting qubits coupled to a dc-SQUID array embedded into an open microwave transmission line, where an external bias can emulate a spacetime containing a traversable wormhole. We find that the amount of vacuum entanglement that can be extracted by the qubits depends on the wormhole parameters. At some distances qubits which would be in a separable state in flat spacetime would become entangled due to the analogue wormhole background.

Wormhole as a Waveguide: Case of Quantum Particles with Zero Angular Momentum

“…Understandably, for very small radius b 0 of the throat of the wormhole, the energy of the incoming particle has to be considerable. Given the recent experimental progress, a verification of our prediction for zero angular momentum particles passing through a graphene wormhole geometry [7,8,9], and possibly by optical, plasmonic or other means [10,11,12,13,14,15,16], would be highly desirable.…”

“…In a similar vein, using magnetic metamaterials and metasurfaces magnetostatic wormholes have been experimentally demonstrated [12]. Traversable wormholes in condensed matter have been proposed by considering two entangled superconducting qubits coupled to a dc-SQUID array embedded in a microwave transmission line [13]. Similarly, optical wormholes comprising liquid crystal films on a catenoid have been theoretically studied [14] and proposed using nanophotonics [15].…”

Wormhole as a waveguide for non-relativistic quantum particles

“…In a similar vein, using magnetic metamaterials and metasurfaces magnetostatic wormholes have been experimentally demonstrated [12]. Traversable wormholes in condensed matter have been proposed by considering two entangled superconducting qubits coupled to a dc-SQUID array embedded in a microwave transmission line [13]. Similarly, optical wormholes comprising liquid crystal films on a catenoid have been theoretically studied [14] and proposed using nanophotonics [15].…”

Post-Editorial of “Universe: 5th Anniversary” Special Volume

“…Their outcome is that the statistical error bars have been underestimated, or systematic errors were not properly taken into account in at least 20% of the measurements analyzed, suggesting that, in the case of the Hubble parameter, this may be the source of the recently observed H 0 tension among different kinds of measurements. C. Sabín [6] explores the possibility of a laboratory tabletop experiment to emulate a spacetime containing a traversable wormhole. The experimental setup consists of two superconducting qubits coupled to a dc-SQUID array embedded into an open microwave transmission line, where an external bias produces the GR-like signal.…”