From Quantum Foundations to Applications and Back

TL;DR

This paper discusses the importance of foundational issues in quantum physics, especially the measurement problem, and explores how understanding Macroscopic Quantumness can advance both theoretical and applied physics.

Contribution

It highlights the potential of studying Macroscopic Quantumness to address fundamental quantum measurement problems across physics disciplines.

Findings

Quantum non-locality has driven advances in quantum information science.

Addressing the measurement problem can lead to progress in multiple physics fields.

Macroscopic Quantumness offers a promising avenue for foundational and applied research.

Abstract

Quantum non-locality has been an extremely fruitful subject of research, leading the scientific revolution towards quantum information science, in particular to device-independent quantum information processing. We argue that time is ripe to work on another basic problem in the foundations of quantum physics, the quantum measurement problem, that should produce good physics both in theoretical, mathematical, experimental and applied physics. We briefly review how quantum non-locality contributed to physics (including some outstanding open problems) and suggest ways in which questions around Macroscopic Quantumness could equally contribute to all aspects of physics.