No, quantum computing does not directly prove the existence of higher spatial dimensions. The concept of higher spatial dimensions is primarily a topic explored in theoretical physics and mathematics, specifically in theories like string theory and some versions of quantum gravity.
Quantum computing, on the other hand, is a computational paradigm that exploits the principles of quantum mechanics to perform certain types of calculations more efficiently than classical computers. It focuses on utilizing quantum systems, such as qubits, and their unique properties to process and manipulate information.
While quantum computing has the potential to offer insights into various scientific and mathematical problems, including those related to fundamental physics, it does not inherently provide evidence or proof for the existence of higher spatial dimensions. The existence of higher dimensions is still an open question in theoretical physics, and it requires experimental or observational evidence to support or disprove such concepts.