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Cryogenic Memory Cell Design Based on Small Coupled Arrays of Josephson Junctions

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Superconductor Science and Technology
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Conference Date

We demonstrated a paradigm for cryogenic memory operation and presented a specific example of a circuit that consists of three inductively coupled Josephson junctions. We have employed Josephson junction parameter values that are consistent with the current state-of-the-art Josephson junction fabrication capabilities. For parameter values presented in the paper, memory cell access times are of the order of 10 - 100 ps while access energies are of the order of 0.1 – 5 aJ. The principles of memory cell design and operation described in our papers can in principle be implemented on other Josephson junction based circuits as well.