Optimized Entanglement Purification
Autor: | Stefan Krastanov, Liang Jiang, Victor V. Albert |
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Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
Quantum Physics
Bell state Physics and Astronomy (miscellaneous) Basis (linear algebra) Computer science business.industry FOS: Physical sciences Quantum entanglement Modular design 01 natural sciences Atomic and Molecular Physics and Optics lcsh:QC1-999 010305 fluids & plasmas Computer engineering Qubit 0103 physical sciences 010306 general physics business Quantum Physics (quant-ph) Quantum lcsh:Physics Quantum computer Electronic circuit |
Zdroj: | Quantum, Vol 3, p 123 (2019) |
Popis: | We investigate novel protocols for entanglement purification of qubit Bell pairs. Employing genetic algorithms for the design of the purification circuit, we obtain shorter circuits achieving higher success rates and better final fidelities than what is currently available in the literature. We provide a software tool for analytical and numerical study of the generated purification circuits, under customizable error models. These new purification protocols pave the way to practical implementations of modular quantum computers and quantum repeaters. Our approach is particularly attentive to the effects of finite resources and imperfect local operations - phenomena neglected in the usual asymptotic approach to the problem. The choice of the building blocks permitted in the construction of the circuits is based on a thorough enumeration of the local Clifford operations that act as permutations on the basis of Bell states. |
Databáze: | OpenAIRE |
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