No, a quantum computer is not considered a form of nanotechnology. While nanotechnology deals with the manipulation and control of matter on the nanoscale (typically at the scale of individual atoms or molecules), a quantum computer refers to a type of computer that utilizes the principles of quantum mechanics to perform computations.
Quantum computers make use of quantum bits, or qubits, which can exist in multiple states simultaneously, thanks to a property called superposition. They leverage quantum phenomena such as entanglement and interference to perform computations in ways that can potentially solve certain problems much faster than classical computers.
While the physical components of a quantum computer, such as the qubits and control systems, may involve nanoscale technologies in their fabrication, the concept of a quantum computer itself is not synonymous with nanotechnology. Nanotechnology encompasses a broader field of research and technology that extends beyond quantum computing to include various applications in materials science, electronics, medicine, and more.