Related Experiment Video
Updated: Jan 12, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Semiclassical Wormholes toward Typical Entangled States
Javier M Magán1, Martin Sasieta2, Brian Swingle2
1Instituto Balseiro, Centro Atómico Bariloche, 8400-S.C. de Bariloche, Río Negro, Argentina.
Abstract:
What do the typical entangled states of two black holes look like? Do they contain semiclassical interiors? We approach these questions constructively, providing ensembles of states that densely explore the black hole Hilbert space. The states contain very long Einstein-Rosen caterpillars: semiclassical wormholes with large numbers of matter inhomogeneities. Distinguishing these ensembles from the typical entangled states of the black holes is hard. We quantify this by deriving the correspondence between a microscopic notion of quantum randomness and the geometric length of the wormhole. This formalizes a "complexity = geometry" relation.
Related Concept Videos
Path Between Thermodynamics States
Free Energy Changes for Nonstandard States
Standing Waves in a Cavity
The de Broglie Wavelength
First Law: Particles in One-dimensional Equilibrium
Woodward–Hoffmann Selection Rules and Microscopic Reversibility

