TY - GEN
T1 - Evaluation of LDMOS Device's Behavior at Cryogenic Temperatures
AU - Zahra, Mohammad Abu
AU - Repp, Jens
AU - Hartmann, Michael
AU - Brandl, Matthias
AU - Brederlow, Ralf
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - Trapped ion quantum computing (TIQC) with its high gate fidelities and coherence times is a leading quantum technology on the quest for a scalable, fault-tolerant quantum computer. Large-scale quantum computers will require cryogenic multiplexing of control signals. In the case of TIQC, these signals may have voltages of tens of volts. Thus, LDMOS devices will be employed in large-scale trapped ion quantum computers. In this publication, the cryogenic behavior of LDMOS is characterized down to a temperature of 4 K. It shows an increase in the threshold voltage and the kink effect for higher drain-source-voltages. For low voltages, another effect appears at cryogenic temperatures. Close to zero drain-source-voltage, a non-linearity drastically reduces the current through the device. This affects the settling time and the integrity of the applied control signals via the quantum computer's multiplexer.
AB - Trapped ion quantum computing (TIQC) with its high gate fidelities and coherence times is a leading quantum technology on the quest for a scalable, fault-tolerant quantum computer. Large-scale quantum computers will require cryogenic multiplexing of control signals. In the case of TIQC, these signals may have voltages of tens of volts. Thus, LDMOS devices will be employed in large-scale trapped ion quantum computers. In this publication, the cryogenic behavior of LDMOS is characterized down to a temperature of 4 K. It shows an increase in the threshold voltage and the kink effect for higher drain-source-voltages. For low voltages, another effect appears at cryogenic temperatures. Close to zero drain-source-voltage, a non-linearity drastically reduces the current through the device. This affects the settling time and the integrity of the applied control signals via the quantum computer's multiplexer.
KW - LDMOS
KW - carrier freeze out
KW - cryogenic circuits
KW - field assisted ionization
KW - trapped ion quantum computer
UR - http://www.scopus.com/inward/record.url?scp=85210813842&partnerID=8YFLogxK
U2 - 10.1109/CAS62834.2024.10736762
DO - 10.1109/CAS62834.2024.10736762
M3 - Conference contribution
AN - SCOPUS:85210813842
T3 - Proceedings of the International Semiconductor Conference, CAS
SP - 181
EP - 184
BT - 2024 47th International Semiconductor Conference, CAS 2024 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 47th International Semiconductor Conference, CAS 2024
Y2 - 9 October 2024 through 11 October 2024
ER -