Parity-Time Symmetry via Time-Dependent non-Unitary Gauge Fields. (arXiv:2109.03846v1 [physics.class-ph]) 上午9:54 | Mario A. Quiroz-Juárez, Zachary A. Cochran, José L. Aragón, Yogesh N. Joglekar, Roberto de J. León-Montiel | quant-ph updates on arXiv.org Parity-Time (PT) symmetric systems have been widely recognized as fundamental building blocks for the development of novel, ultra-sensitive opto-electronic devices. However, arguably one of their major drawbacks is… Read more →

Conserved Quantities and Measurements. (arXiv:2108.08342v1 [quant-ph]) 2021年8月20日 星期五 下午3:42 | Edward J. Gillis | quant-ph updates on arXiv.org When a measurement is made on a system that is not in an eigenstate of the measured observable, it is often assumed that some conservation law has been violated. Discussions of the effect of measurements on conserved quantities often overlook the possibility… Read more →

Quantum logical entropy: fundamentals and general properties. (arXiv:2108.02726v1 [quant-ph]) 上午10:04 | Boaz Tamir, Ismael L. Paiva, Zohar Schwartzman-Nowik, Eliahu Cohen | quant-ph updates on arXiv.org Logical entropy gives a measure, in the sense of measure theory, of the distinctions of a given partition of a set, an idea that can be naturally generalized to classical probability distributions. Here, we analyze… Read more →

The Real Meaning of Quantum Mechanics. (arXiv:2107.10666v1 [quant-ph]) 上午10:54 | Francois-Igor Pris | quant-ph updates on arXiv.org We suggest a contextual realist interpretation of relational quantum mechanics. The principal point is a correct understanding of the concept of reality and taking into account the categorical distinction between the ideal and the real. Within our interpretation, consciousness of the observer does… Read more →

Is the problem of molecular structure just the quantum measurement problem? Foundations of Chemistry (2021) Sebastian Fortin & Olimpia Lombardi Abstract In a recent article entitled “The problem of molecular structure just is the measurement problem”, Alexander Franklin and Vanessa Seifert argue that insofar as the quantum measurement problem is solved, the problems of molecular structure are resolved as well…. Read more →

R\’enyi entropy of magic. (arXiv:2106.12587v1 [quant-ph]) 上午9:37 | Lorenzo Leone, Salvatore F. E. Oliviero, Alioscia Hamma | quant-ph updates on arXiv.org We introduce a novel measure for the quantum property commonly known as $magic$ by considering the R\’enyi entropy of the probability distribution associated to a pure quantum state given by the square of the expectation value of Pauli strings… Read more →