The energy cost of quantum information losses
| Autor: | Franklin de Lima Marquezino, Renato Portugal, Raul Donangelo, Alejandro Romanelli |
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| Rok vydání: | 2018 |
| Předmět: |
Statistics and Probability
Physics Trace (linear algebra) Operator (physics) Quantum entanglement Condensed Matter Physics Space (mathematics) Topology 01 natural sciences Upper and lower bounds 010305 fluids & plasmas 0103 physical sciences Quantum walk Quantum information 010306 general physics Energy (signal processing) |
| Zdroj: | Physica A: Statistical Mechanics and its Applications. 497:1-8 |
| ISSN: | 0378-4371 |
| Popis: | We explore the energy cost of the information loss resulting from the passage of an initial density operator to a reduced one. We use the concept of entanglement temperature in order to obtain a lower bound for the energy change associated with this operation. We determine the minimal energy required for the case of the information losses associated with the trace over the space coordinates of a two-dimensional quantum walk. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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