The field of quantum computing seems to bring new breakthroughs every other week, aimed at improving the practicality and computing power of quantum-based solutions. According to Sky News, The latest development of the University of New South Wales in Sydney, Australia can realize a quantum system using millions of qubits.
We have already detailed many quantum computing breakthroughs: from pre-emptive, Anti-quantum cryptographic algorithm arrive Discovery of new materials Pass through Self-contained quantum chip, The quantum computing space has been in the acceleration vector for a period of time. Researchers at the University of New South Wales in Sydney, Australia, have just raised this innovation to 11 items after seemingly solving the problem of quantum scaling. This latest development can realize a quantum system that uses millions of qubits instead of the current maximum value which is hovering around a hundred.In the long run, the use of millions of qubits seems to be an important step in increasing the value of the quantum computing market-it is estimated that the quantum computing as a service (QCaaS) market will increase to 26 billion US dollars Before the end of ten years.
Researchers in Sydney solved the quantum scaling problem from the control side of the equation. Whenever there is an automated system designed to operate on its own, there must be a control mechanism that enables users to change input variables. Now in quantum computing, this happens through microwave electromagnetic fields—essentially, beside each qubit, the quantum system has a wire through which electric current is conducted. In turn, this generates a magnetic field based on the intensity of the current, allowing users of quantum computers to manipulate the value of the qubit and keep the qubit stable enough to perform the actual calculations required.
However, a major problem with this solution is that the expansion of quantum computers has become more difficult: heat. The hotter the wire that conducts the current becomes, the more sustained or stronger the current is; because the range of the microwave electromagnetic field is small, scientists basically have to place a wire next to each qubit. You can imagine the results of trying to expand such a design to millions of small computing resources in this way. However, having millions of different wires in the space of a quantum chip will not only take up too much space, but will also damage another requirement of the current stability of quantum computing: qubits can only provide effective work and maintain Its quantum state, when cooled to a temperature below zero, is approximately -270 degrees Celsius. More wires means higher energy consumption and higher heat output-which means that it is becoming harder and harder to maintain the target temperature.
The solution is simple, in fact: instead of trying to control each qubit with a wire, the team is trying to design a system so that the electromagnetic field can surround the qubits from above and can act on all qubits. at the same time. “First, we removed the wires next to the qubits, and then came up with a new way to provide a microwave frequency magnetic control field throughout the system. Therefore, in principle, we can provide up to 4 million qubits control field ,” said the doctor. The PLA then added a new component to the setup, the dielectric resonator.
“Dielectric resonators shrink the wavelength to less than one millimeter, so we can now very effectively convert microwave power into a magnetic field that controls the spin of all qubits,” Pla added. “There are two key innovations here. The first is that we don’t need to invest a lot of energy to provide a strong driving field for the qubits, which crucially means that we don’t generate too much heat. The second is the entire chip. The magnetic field is very uniform, so millions of qubits have all undergone the same level of control.”
Of course, there are other challenges in expanding the basic unit qubits of quantum computers. However, the control of the system does not seem to be a problem anymore. This is an important step on our way to realize the actual popularization of quantum computing in the future-at this point in time, this is already a fact rather than a fiction.A sort of Recent report The value of the quantum computing as a service market will reach US$4 billion as early as 2025-US$1 billion in 2020. This number may increase by 6.5 times in just five years-it is estimated that by 2030, the same market value will reach US$26 billion. Remember, this is a specific part of quantum computing-providing access to the runtime of quantum computing, which is the distribution of services from companies such as Microsoft Azure and Amazon Web Services. This does not take into account the investment and research surrounding this market, which will inflate the $26 billion valuation.