aiqbench analysis
This study reveals that thermalisation timescales in quantum systems grow logarithmically with distance between qubit regions, challenging intuitive models of information spread. The research demonstrates that while generic locally interacting systems exhibit emergent locality via measurement-induced entanglement teleportation, specific circuits can transmit randomness perfectly to induce genuine non-locality. These findings provide critical insights into the fundamental limits of information propagation and thermalisation in quantum architectures.
Thermalisation Timescale Grows Logarithmically With Qubit Region Distance
Deep thermalisation timescales, studied via entanglement teleportation, increase logarithmically with the distance between qubit regions.
The timescale governing how quickly quantum systems reach predictable statistical states grows logarithmically with the distance between subregions, a surprising finding that challenges intuitive models of information spread. Saptarshi Mandal, Alan Sherry, and Sthitadhi Roy of the International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, demonstrate that measurement-induced entanglement teleportation fundamentally bounds the speed of this thermalisation, even when quantum system areas are disconnected. Their work reveals that while measurements create entanglement across these disconnected areas, this demonstrates an emergent locality, rather than resulting in non-locality for most systems. Exceptions exist, however, in special circuits where the randomness of the measurement outcomes is perfectly transmitted, leading to deep thermalisation on a finite timescale and indicating genuine non-locality. This…
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