تقرير
Hamiltonian Memory: An Erasable Classical Bit
| العنوان: | Hamiltonian Memory: An Erasable Classical Bit |
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| المؤلفون: | Holtzman, Roi, Arwas, Geva, Raz, Oren |
| المصدر: | Phys. Rev. Research 3, 013232 (2021) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Statistical Mechanics |
| الوصف: | Computations implemented on a physical system are fundamentally limited by the laws of physics. A prominent example for a physical law that bounds computations is the Landauer principle. According to this principle, erasing a bit of information requires a concentration of probability in phase space, which by Liouville's theorem is impossible in pure Hamiltonian dynamics. It therefore requires dissipative dynamics with heat dissipation of at least $k_BT\log 2$ per erasure of one bit. Using a concrete example, we show that when the dynamic is confined to a single energy shell it is possible to concentrate the probability on this shell using Hamiltonian dynamic, and therefore to implement an erasable bit with no thermodynamic cost. Comment: 3 Figures, 14 pages |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevResearch.3.013232 |
| URL الوصول: | http://arxiv.org/abs/2009.01263 |
| رقم الأكسشن: | edsarx.2009.01263 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevResearch.3.013232 |
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