First Mass Producible Quantum Computer Chip
Researchers at the University of Michigan have produced what is believed to be the first scalable quantum computer chip, which could mean big gains in the worldwide race to develop a quantum computer.
Using the same semiconductor fabrication technology that is used in everyday computer chips, researchers were able to trap a single atom within an integrated semiconductor chip and control it using electrical signals, said Christopher Monroe, U-M physics professor and the principal investigator and co-author of the paper, “Ion Trap in a Semiconductor Chip.” The paper appeared in the Dec. 11 issue of Nature Physics.
Quantum computers are promising because they can solve certain problems much faster than any possible conventional computer, owing to the bizarre features of quantum mechanics. For instance, quantum computers can process multiple inputs at the same time in the same device, and quantum circuitry can be wired via the quantum feature of entanglement, dubbed by Einstein as “spooky action-at-a-distance.”
One of the most favored candidate quantum computer architectures is the use of individual atoms to store quantum bits (qubits) of information, where each qubit can hold the number 1 or 0, or even both 1 and 0 simultaneously, Monroe said. Electrically charged atoms (ions) for such quantum computers are stored in what are known as ion traps. Trapping is necessary in order to isolate the qubits from the rest of the world, which is absolutely essential for the system to behave quantum mechanically. It is well known how to program a quantum computer composed of any number of trapped ions; the problem is to get the ions trapped in the first place.
Source: Quantum Biocommunication Technology.
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