Any computation performed by a quantum computer may detect its own flaws.

Any computation performed by a quantum computer may detect its own flaws. 

 A collection of 16 qubits has been assembled in such a way that they may be able to do any computation without mistake - an important step toward constructing quantum computers that outperform standard ones. 

When completing any task, a quantum computer consisting of charged atoms can detect its own faults - a significant step toward more dependable and practical quantum computers. 

Because conventional computers constantly detect and rectify their own flaws, quantum computers will need to do the same in order to fully surpass them. However, quantum effects can cause mistakes to propagate rapidly across the qubits, or quantum bits, that comprise these devices.

Lukas Postler of the Austria's University of Innsbruck and his colleagues have created a quantum computer that can do any computation without mistake. 

Any action of a quantum computer may be decomposed into smaller calculations known as quantum gates. These may be used to modify the quantum state of a qubit by striking it with a laser. The researchers developed a collection of gates that serve as building blocks for more sophisticated calculations and ensure that even the most complex of them are error-free. 

They employed electric fields to hold 14 calcium ions in place, generating two logical qubits, each of which had seven entangled ions. Two extra qubits acted as "flags," indicating to the computer when an incorrect computation needed to be fixed.

"With this universal set of gates, you can approximate every computation that a quantum computer could possibly accomplish," Postler explains. The researchers proved that each of the logic gates in their system functions properly, https://techtimetas.blogspot.com/ eliminating mistakes. 

While this https://techtimetas.blogspot.com/ configuration may be advantageous for some types of quantum computers, it may not be suitable for more complex systems, according to Christopher Monroe of the Joint Quantum Institute in Maryland. The difficulty of implementing error correction into quantum computers varies greatly depending on the technology. Error correction needs devices far larger than 16 qubits for quantum computers that utilize superconducting qubits, such as Google's Sycamore, he says. Monroe and his colleagues employed 13 trapped ions in 2021 to construct a single logical qubit that stored data with surprising accuracy due to error correction. 

According to him, the new quantum computer is not yet large or trustworthy enough to solve any realistic real-world challenge.

"Various research groups are piecing together how to achieve it with trapped ion qubits," he explains. "This new experiment is only one more piece of the https://techtimetas.blogspot.com/ puzzle."