A new type of quantum simulator can finally calculate the inside of a black hole, a task that has been impossible for every computer until now.
April 25, 2026
Original Paper
Continuous-Variable Quantum Computing for Non-Compact Gauge Theories: Generalizing to Sp(2n, R) Lattices and Multi-Radial Holographic RG Flow
SSRN · 6427999
The Takeaway
Traditional computers and even standard qubit-based quantum computers fail when trying to simulate the complex physics of gravity. This researcher developed a qumode-based system that uses continuous variables rather than simple on-off bits to handle these massive calculations. This setup can model the way high-spin particles and black hole dynamics behave at the quantum level. It provides a way to test theories of quantum gravity that were previously stuck in the realm of abstract pencil-and-paper math. This could be the breakthrough tool that finally helps us understand how space and time are stitched together at the most fundamental level.
From the abstract
We extend continuous-variable quantum computing (CVQC) to non-compact lattice gauge theories by generalizing the SL(2, R) model to the full symplectic group Sp(2n, R) on the Siegel upper half-space (with explicit high-precision simulations performed for the representative case n = 2). Using the Iwasawa decomposition Sp(2n, R) = KAN with maximal compact subgroup K U(n) and multi-radial non-compact directions ρ = (ρ 1 ,. .. , ρ n) parametrized by the abelian subgroup A, we formulate Kogut-Susskind