Bonn 2025 – scientific programme

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QI: Fachverband Quanteninformation

QI 39: Quantum Foundations

QI 39.8: Talk

Friday, March 14, 2025, 12:45–13:00, HS VIII

Quantum-error-correction assisted test of quantum aspects of gravity — •Yixuan Wang, Julen Simon Pedernales, and Martin Bodo Plenio — Institut für Theoretische Physik, Universität Ulm, Ulm, Germany

The detection of gravitationally induced entanglement (GIE) offers a promising avenue to experimentally test those hybrid quantum-classical models of gravity that can be represented as non-LOCC (local operations and classical communication) maps. However, practical observation of such entanglement may be hindered by environmental decoherence or fundamental decoherence mechanisms, such as those postulated in wavefunction collapse models. To address these challenges, quantum error correction can play a pivotal role. In my talk, I demonstrate that local quantum error-correcting codes without introducing external entanglement enable the observation of entanglement in models of linearized gravitational interactions, even under the influence of collapse noise from models like Ghirardi-Rimini-Weber (GRW), Continuous Spontaneous Localization (CSL), or the Anastopoulos-Hu gravitational decoherence framework. Furthermore, the recovery of entanglement using local operations provides direct evidence that these combined models (linearized gravity + collapse models) deviate fundamentally from LOCC behavior.

Keywords: quantum error correction; gravitationally induced entanglement; collapse model; gravitational decoherence