Do qubits dream of entangled sheep? Quantum measurement without classical output

• URL: http://arxiv.org/abs/2008.10617v2
• Date: Thu, 16 May 2024 17:33:17 GMT
• Title: Do qubits dream of entangled sheep? Quantum measurement without classical output
• Authors: Noah Lupu-Gladstein, Aharon Brodutch, Hugo Ferretti, Weng-Kian Tham, Arthur Ou Teen Pang, Kent Bonsma-Fisher, Aephraim M. Steinberg,
• Abstract summary: We introduce an entirely quantum notion of measurement, called a sensation, to account for quantum agents that experience the world through quantum sensors. Sensations eschew probabilities and instead describe a deterministic flow of quantum information.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum mechanics is usually formulated with an implicit assumption that agents who can observe and interact with the world are external to it and have a classical memory. However, there is no accepted way to define the quantum-classical cut and no a priori reason to rule out fully quantum agents with coherent quantum memories. In this work, we introduce an entirely quantum notion of measurement, called a sensation, to account for quantum agents that experience the world through quantum sensors. Sensations eschew probabilities and instead describe a deterministic flow of quantum information. We quantify the information gain and disturbance of a sensation using concepts from quantum information theory and find that sensations always disturb at least as much as they inform. Viewing measurements as sensations could lead to a new understanding of quantum theory in general and to new results in the context of quantum networks.

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