Solved one of the main problems of quantum computers

Solved one of the main problems of quantum computers
Solved one of the main problems of quantum computers
Anonim

Researchers in Australia have developed a device that monitors millions of qubits. This is one of the main challenges on the road to creating full-fledged processors for a quantum computer, capable of fault-tolerant operation. The work of scientists is published in the journal Science Advances.

Scientists at the University of New South Wales have solved the problem of how to control millions of qubits without overloading the architecture of a quantum computer with extra wiring and wasting too much electricity and heat. Now, to work with each qubit, individual emitters and receivers of microwave radiation are required, which read and change the quantum state of the memory cell.

Australian physicists decided to implement the idea, put forward in the 1990s, of controlling all qubits with a single magnetic field for the entire processor. To do this, they developed a new device - the so-called three-dimensional dielectric resonator, which is a crystal made of a compound of potassium, thallium and oxygen. It converts a microwave pulse directed at it into focused oscillations of a magnetic field. According to the researchers, with the help of a dielectric resonator, it will be possible to simultaneously establish control over the work of about four million qubits.

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