Quantifying the particle aspect of quantum systems

• URL: http://arxiv.org/abs/1812.08656v4
• Date: Wed, 22 Jan 2025 17:55:51 GMT
• Title: Quantifying the particle aspect of quantum systems
• Authors: Sreetama Das, Indranil Chakrabarty, Arun Kumar Pati, Aditi Sen De, Ujjwal Sen,
• Abstract summary: We discuss the possibility of a quantum system to exhibit properties akin to both the classically held notions of being a particle and a wave. A conceptual foundation for the wave nature of a quantum state has recently been presented, through the notion of quantum coherence.
• Score: 0.31457219084519
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• Abstract: The possibility of a quantum system to exhibit properties that are akin to both the classically held notions of being a particle and a wave, is one of the most intriguing aspects of the quantum description of nature. These aspects have been instrumental in understanding paradigmatic natural phenomena as well as to provide nonclassical applications. A conceptual foundation for the wave nature of a quantum state has recently been presented, through the notion of quantum coherence. We introduce here a parallel notion for the particle nature of a quantum state of an arbitrary physical system. We provide elements of a resource theory of particleness, and give a quantification of the same. Finally, we provide evidence for a complementarity between the particleness thus introduced, and the coherence of an arbitrary quantum state.

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