Rolf Landauer was wrong, Information exists apart from its Physical representation

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  • Опубликовано: 31 дек 2024
  • In 1999, shortly before he passed away, In an article titled "Information is a Physical Entity" Rolf Landauer, who formulated Landauer's principle in 1961, stated "Information is inevitably inscribed in a physical medium. It is not an abstract entity". In short, Landauer was a materialist who held that information does not have an existence apart from its physical representation on a material substrate. In fact, Landauer went so far as to, in the same paper, deride Rodger Penrose's belief that information has an existence independent of matter and energy as a 'quaint notion'. Yet Landauer is now experimentally shown to be wrong, information does have an existence apart from matter and energy. As the 2011 paper titled "Scientists show how to erase information without using energy" stated " "Landauer said that information is physical because it takes energy to erase it. We are saying that the reason it (information) is physical has a broader context than that." And as the 2011 paper titled "Quantum knowledge cools computers: New understanding of entropy" stated "The new study revisits Landauer's principle, "when the bits to be deleted are quantum-mechanically entangled with the state of an observer, then the observer could even withdraw heat from the system while deleting the bits. Entanglement links the observer's state to that of the computer in such a way that they know more about the memory than is possible in classical physics. ,In measuring entropy, one should bear in mind that an object does not have a certain amount of entropy per se, instead an object's entropy is always dependent on the observer." And in a 2017 article titled "The Quantum Thermodynamics Revolution" it is stated the 19th-century physicist James Clerk Maxwell put it, “The idea of dissipation of energy depends on the extent of our knowledge.” In recent years, a revolutionary understanding of thermodynamics has emerged that explains this subjectivity using quantum information theory, a single-ion engine and three-atom fridge were both experimentally realized for the first time within the past year, (and) is forcing them to extend thermodynamics to the quantum realm, Rewriting the theory from the bottom up has led experts to recast its basic concepts in terms of its subjective nature, Renato Renner, a professor at ETH Zurich in Switzerland, described this as a radical shift in perspective. Fifteen years ago, “we thought of entropy as a property of a thermodynamic system,” he said. “Now in (quantum) information theory, we wouldn’t say entropy is a property of a system, but a property of an observer who describes a system.” Thus Landauer's contention that "information is physical because it takes energy to erase it" is now experimentally shown to be wrong. But to go even further, and although there are other experiments along this same line that can be brought to bear on this subject, the easiest way to experimentally demonstrate, contrary to Landauer, that information has an existence independent of its representation on a material substrate is with quantum teleportation. In a 2009 article titled "First Teleportation Between Distant Atoms" it is stated “scientists have successfully teleported information between two separate atoms in unconnected enclosures a meter apart, information, is transferred from one place to another, but without traveling through any physical medium.” And as the 2016 article titled "Quantum Teleportation Enters the Real World" stated,“the photons aren’t disappearing from one place and appearing in another. Instead, it’s the information that’s being teleported through quantum entanglement.” Thus Rolf Landauer’s belief that information does not have an existence apart from its physical representation on a material substrate is falsified, and Rodger Penrose’s ‘quaint notion’ that information has an existence independent of its physical manifestation is experimentally verified.

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