Quantum Computers and Dissipation
| Autor: | G. Massimo Palma, Artur Ekert, Kalle-Antti Suominen |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Quantum Physics
Quantum decoherence Computational complexity theory Computer science Quantum register General Mathematics General Engineering Time evolution FOS: Physical sciences General Physics and Astronomy 01 natural sciences 010305 fluids & plasmas Coherence length ComputerSystemsOrganization_MISCELLANEOUS 0103 physical sciences Quantum algorithm Statistical physics Quantum Physics (quant-ph) 010306 general physics Quantum Quantum computer |
| Zdroj: | Scopus-Elsevier |
| Popis: | We analyse dissipation in quantum computation and its destructive impact on efficiency of quantum algorithms. Using a general model of decoherence, we study the time evolution of a quantum register of arbitrary length coupled with an environment of arbitrary coherence length. We discuss relations between decoherence and computational complexity and show that the quantum factorization algorithm must be modified in order to be regarded as efficient and realistic. 20 pages, Latex, 7 Postscript figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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