The suggestion that consciousness has its origins in quantum weirdness has long been viewed as a bit, well, weird. Critics argue that ideas of quantum consciousness, the most famous of which posits that moments of experience arise as quantum superpositions in the brain collapse, do little more than merge one mystery with another. Besides, where is the evidence? And yet there is a vocal minority who insist we should take the idea seriously.
Hartmut Neven, who leads Google’s Quantum Artificial Intelligence Lab, is among them. He originally trained as a physicist and computational neuroscientist before pioneering computer vision – a type of AI that replicates the human ability to understand visual data. Later, Neven founded Google Quantum AI, which in 2019 became the first lab to claim its quantum computers solved calculations that are impossible on a classical computer, a milestone known as quantum supremacy. In December 2024, his team announced another step forward with its new quantum processor, Willow, which it claims is more powerful and reliable than previous chips.
But Neven is also interested in the relationship between mind and matter. And now, in a use case for quantum computers that no one saw coming, he reckons they could be deployed to put the idea of quantum consciousness to the test. Neven spoke to New Scientist about his belief that we live in a multiverse; why Roger Penrose’s theory of…
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