Parameter optimization for transitions between memory states in small arrays of Josephson junctions
| Autor: | Neena Imam, Yehuda Braiman, Jacob D. Rezac |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Statistics and Probability
Josephson effect Physics Stochastic optimization algorithm Theoretical computer science Condensed Matter Physics Topology 01 natural sciences 010305 fluids & plasmas Pulse (physics) Memory cell Zero voltage 0103 physical sciences Simulated annealing 010306 general physics Reset (computing) Efficient energy use |
| Zdroj: | Physica A: Statistical Mechanics and its Applications. 474:267-281 |
| ISSN: | 0378-4371 |
| Popis: | Coupled arrays of Josephson junctions possess multiple stable zero voltage states. Such states can store information and consequently can be utilized for cryogenic memory applications. Basic memory operations can be implemented by sending a pulse to one of the junctions and studying transitions between the states. In order to be suitable for memory operations, such transitions between the states have to be fast and energy efficient. In this paper we employed simulated annealing, a stochastic optimization algorithm, to study parameter optimization of array parameters which minimizes times and energies of transitions between specifically chosen states that can be utilized for memory operations (Read, Write, and Reset). Simulation results show that such transitions occur with access times on the order of 10–100 ps and access energies on the order of 10−19–5×10−18 J. Numerical simulations are validated with approximate analytical results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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