What they will eventually build with it is uncertain." "Giving people power over a different part of nature hands them a new toolkit. "Broadly speaking, the goal of my research is to increase human control over quantum mechanics." said Sutherland. These computers are being explored in many industries including science, engineering, finance and logistics.
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One of the most promising uses for quantum computers is to simulate quantum mechanical processes themselves, chemical reactions for example, which could exponentially reduce the experimental trial and error required to solve difficult problems. Quantum computers have the potential to solve certain complex problems exponentially faster than classical supercomputers.
This quantum computing accomplishment is detailed in a paper Sutherland co-authored titled, "High-fidelity laser-free universal control of trapped-ion qubits." It was published in the scientific journal, Nature, on September 8. "This alternative gate method matches the accuracy of lasers by instead using microwaves, which are less expensive and easier to calibrate." "Laser-free gate methods do not have the drawbacks of photon scattering, energy, cost and calibration that are typically associated with using lasers," said Sutherland. He says the price of an integrated circuit that performs a laser-free gate is negligible compared to the tens of thousands of dollars it costs for a laser that does the same thing. Sutherland adds that making the entangling gates in your quantum computer "laser-free" enables more cost-effective and easier to use quantum computers. "The name comes from the fact that this can generate a quantum mechanical property called 'entanglement' between the qubits." "For example, if the state of qubit A is 0, an entangling gate doesn't do anything to qubit B, but if the state of qubit A is 1, then the gate flips the state of qubit B from 0 to 1 or 1 to 0," he said. Sutherland and his team set the world record for the most accurate entangling gate ever demonstrated without lasers.Īccording to Sutherland, an entangling gate takes two qubits (quantum bits) and creates an operation on the secondary qubit that is conditioned on the state of the first qubit.
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