From a researcher of the Federal Polytechnic of Lausanne a method to read several qubits at the same time, the smallest unit of quantum data

In Switzerland a new system has been developed that paves the way for a new generation of quantum computers even more powerful.
“IBM and Google currently have the most powerful quantum computers in the world”, says the professor Edward Charbon, head of the Advanced Quantum Architecture laboratory (familiarly 'AQUA Lab') in the School of Engineering of the Federal Polytechnic of Lausanne. “IBM just introduced a 127 qubit machine, while Google's is 53 qubit”.
The ability to make i even faster quantum computers is limited, however, due to an upper limit on the obtainable number of quibit. But a team of engineers led by the Vaud researcher, in collaboration with scientists from UK, has just developed a promising method to overcome this technological barrier.
Their approach allows you to read i quibit more efficiently, which means that more data can be crammed into quantum processors. The findings appear in an article published by "Nature Electronics".

The quantum world at the mercy of an unprecedented heterojunction

Biochemistry and cryptography are the main applications of the system

Quantum computers do not work like the calculators we are used to. Instead of having a separate processor and memory chip, the two are combined into a single unit known as a quibit.
These computers use the quantum properties such as superposition andentanglement to perform complicated calculations that normal computers could never do in a reasonable amount of time. The potential applications of quantum computers include the biochemistry, the cryptography and other highly complex tasks.
The machines used by research groups today have about one dozen qubits. “Our challenge is to interconnect more qubits in quantum processors, we are talking about hundreds, even thousands of them, in order to increase the processing power of computers”Says Charcoal.
The number of quibit it is currently limited by the fact that there is not yet a technology that can rapidly read all qubits.
“Complicating matters further, qubits operate at temperatures close to absolute zero, or -273,15 degrees Celsius”he adds.
“This makes reading and checking even more difficult. What engineers typically do is use machines at room temperature and check each qubit individually."

The first 127-qubit quantum processor is made-by-IBM

“A real breakthrough” thanks to quantum dots crammed into a transistor

Andrew Ruffino, a doctoral student at the Advanced Quantum Architecture laboratory, has developed a method that allows you to read nine qubits simultaneously and effectively. Also, his approach could be scaled for matrices of quibit larger.
“Our method is based on the use of time and frequency domains”, he explains. "The basic idea is to reduce the number of connections by making three qubits work with a single link."
The Federal Institute of Technology in Lausanne he doesn't have a quantum computer, but that didn't stop the young scientist. He found a way to emulate the quibit and perform experiments under nearly identical conditions.
“I have incorporated quantum dots, which are nano-sized semiconductor particles, into a transistor. This gave me something that works like qubits."Says Andrew Ruffino. He is the first doctoral student of theAQUA Lab to study this topic for his thesis.
“Andrea demonstrated that his method works with integrated circuits on ordinary computer chips, and at temperatures approaching those of qubits”Says Edward Charbon.
“It's a real breakthrough that could lead to systems of large arrays of qubits integrated with the necessary electronics. The two types of technology could work together in a simple, effective and reproducible way."

Experimental breakthrough towards quantum supercomputers

IBM Teases First 127-Qubit Quantum Processor