McCaughan, A.
, Schneider, M.
, Nam, S.
, Toomey, E.
and Berggren, K.
(2018),
A kinetic-inductance-based superconducting memory element with shunting and sub-nanosecond write times, Superconductor Science and Technology, [online], https://doi.org/10.1088/1361-6668/aae50d
(Accessed December 13, 2024)
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A kinetic-inductance-based superconducting memory element with shunting and sub-nanosecond write times
Published
Author(s)
, , , Emily Toomey, Karl Berggren
Abstract
We present a kinetic-inductance-based superconducting memory element that had non-destructive readout, femtojoule read and write energies, had both read and write shunts, and was writeable with pulses at least as short as 400 ps. The element utilizes both a high-kinetic-inductance layer made from tungsten silicide as well as a low-kinetic-inductance layer made from niobium. By using tungsten silicide--which has a long (20 ns) thermal time constant--and measuring bit- error rates from 10 MHz to 1 GHz, we were able to verify that the thin-film elements could be operated at a datarate at least as fast as the material thermal time constant with a bit error ratio less than 10-6. We also analyze the margins of the device, and outline the characteristics by which a more efficient device may be designed.Citation
Superconductor Science and Technology
Volume
32
Pub Type
Journals
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Created November 27, 2018, Updated July 9, 2019