Quantum Hardware: As of my last knowledge update in September 2021, practical quantum hardware is still in its infancy and may not be readily available for widespread use.1
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References
1Rahman MA, Akter MstS, Miller E, et al. Fine-Tuned Variational Quantum Classifiers for Cyber Attacks Detection Based on Parameterized Quantum Circuits and Optimizers. In: 2024 IEEE 48th Annual Computers, Software, and Applications Conference (COMPSAC). IEEE; 2024:1067-1072. doi:10.1109/COMPSAC61105.2024.00144