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Departamento de Gravitación y Teoría de CamposSeminarios 2016 |
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Instituto de Ciencias Nucleares, UNAM |
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Departamento de Gravitación y Teoría de CamposSeminarios 2016 |
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Instituto de Ciencias Nucleares, UNAM |
Jueves 31 de marzo, a las 17:00 hrs en el salón de seminarios A2.25, 2. piso del ICN
Daniel Bedingham (University of Oxford)
The thermodynamic cost of quantum operations
| The heat generated by computers is rapidly becoming one of the key obstacles that must be overcome for future advances in technology. The fundamental thermodynamic cost of classical computing, known as the Landauer Limit, is already being experimentally tested. This is the limit in which classical computation becomes thermodynamically reversible. Quantum computers, while offering possible speed gains over and above classical computing, bring their own obstacles. In this talk I will show that the extension of the Landauer Limit to quantum computers is not reachable in general. Quantum computation carries an unavoidable excess heat generation that renders it inherently thermodynamically irreversible. I will present the special conditions under which the Landauer Limit may be reached by quantum computers, and show how classical computing fits into these special conditions. |
