PhD Position in Ferroelectric Memcapacitors for Cryogenic Quantum Control

The Université de Sherbrooke invites applications for a doctoral research position focused on exploring ferroelectric memcapacitor functionality in deep-cryogenic environments for quantum computing control electronics. Operating jointly within the Interdisciplinary Institute for Technological Innovation (3IT) and the Quantum Institute (IQ), the successful candidate will design, fabricate, and test novel HZO-based devices integrated with superconducting electrodes. The project aims to address major bottlenecks in scaling semiconductor qubits by implementing compact, low-power adaptive control directly at millikelvin temperatures. Candidates will receive multidisciplinary training in microfabrication, nanomaterials characterization, and ultra-low temperature electrical measurements under the supervision of Dominique Drouin.

• Design and fabricate cryogenic-compatible HfZrO2 ferroelectric memcapacitors and crossbar arrays featuring superconducting electrodes.
• Execute cleanroom micro- and nanofabrication processes including photolithography, dry etching, and passivation.
• Conduct physical, chemical, and morphological characterizations using AFM, SEM, and TEM techniques.
• Perform comprehensive electrical tests at room temperature and deep-cryogenic temperatures down to approximately 20 mK.
• Evaluate device performance metrics such as capacitive hysteresis, retention, endurance, and noise characteristics.