The atom, let us remember, is a world in itself. Atoms, after all, are comprised of quantum particles. Their nuclei are made from quarks bonded together through the action of bosons. Electrons, another type of quantum particle, exist in stable orbits around the nucleus. Electrons may exist in multiple superposed states, and the fact that all atoms of the same atomic number exhibit the same properties regardless of where in the universe they exist reinforces the quantum phenomenon of entanglement. This also suggests that the lifetime of quantum states (such as superposition and entanglement, among others) do endure.
But this stable entity is in a continual state of change due to interaction with or releasing photons. In other words, the atom is subject to persistent dynamics of quantum computation as light (a.k.a photons) continually changes its state. The atom, then, is perhaps the most stable of quantum computers, robustly operating in a range of environments and also proving that it is not subject to decoherence while easily connecting with other atoms to create complex chains of molecules—therefore proving, again and again, that scalability of quantum computers is the natural law of things.
So, the question, then, is if nature can easily and abundantly scale atom-based quantum computers that continually exhibit superposition and entanglement and remain stable and beyond the vagaries of decoherence, then why can’t leading companies at the forefront of today’s quantum computing industry?
Read more in the article Learning From the Atom-Based Quantum Computer.
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