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Alphabet Inc. subsidiary Google wants to build a practical quantum computer by the end of this decade that could potentially be used commercially to handle large-scale scientific and business calculations with an exponentially higher efficiency without errors. To accomplish this task, they are aiming to build error-corrected logical qubits, or a collection of physical qubits stable enough to hold quantum information for a long period of time, that together form a single logical qubit.
Research will be conducted at Google’s new Quantum AI campus in Santa Barbara, complete with a quantum data center, quantum processor chip fabrication facilities, and hardware research labs. The company is pivoting to the cloud to offer its quantum-computing services, thus harnessing quantum physics and speeding up machine learning. This in turn could help make more energy-efficient batteries and fertilizers with minimal carbon dioxide emissions.
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We hope to one day create an error-corrected quantum computer. But one problem we face today is that our physical qubits are very fragile – even cosmic rays from space can destroy quantum information. We start by reducing the error rate of our physical qubits, then combining a thousand physical qubits to create a single logical qubit, and then scaling that up to a thousand logical qubits. At which point we will have created an error-corrected quantum computer, with 106 physical qubits,” said Sundar Pichai, Google CEO
