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| Hauptseite > Online First > Pulse Generation for Spin-Qubit Control Using Adiabatic Charging |
| Hauptseite > Online First > Pulse Generation for Spin-Qubit Control Using Adiabatic Charging |
| Preprint | FZJ-2025-04994 |
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2025
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Please use a persistent id in citations: doi:10.36227/techrxiv.176231736.66174866/v1
Abstract: This brief presents a power-efficient approach for generating control pulses for semiconductor spin qubits that combines the flexibility of room-temperature electronics with the scalability of cryogenic electronics. By demultiplexing ramp pulses generated at room temperature, capacitive loads are charged adiabatically, greatly reducing power dissipation. The method is demonstrated using a cryogenic circuit in a 22 nm CMOS technology, designed to generate control pulses for shuttling semiconductor electron spins. Post-layout simulations show that the circuit achieves analog power dissipation more than two orders of magnitude lower than the state of the art at frequencies up to 1 MHz, more than one order of magnitude lower at 10 MHz, and maintains superior efficiency up to several hundred MHz. Furthermore, only two external AC inputs are required to generate a wide range of pulse patterns with tunable amplitudes across multiple outputs. These results demonstrate the potential of the approach for large-scale quantum processor architectures.
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