Argon National Laboratory research at the US Department of Energy (DOE) and the University of Chicago set a new record for keeping quantum bits (qubits) in a coherent quantum state for more than 5 seconds. The study, published in the journal Science Advances, is hailed as a new and important step in extracting useful work from quantum computers; A step that should reduce the performance of quantum computing to the moment of quantum excellence that is much sought after.
According to Thameshardor, it is very difficult to maintain quantum computing systems in coherent states. The fragile nature of “regular chaos” is such that qubit information and qubit bonding (entanglement) usually deteriorate on much less than one-second scales. New research turns the coherence of quantum computing into comprehensible time scales for humans. Using a technique called “impulse reading”, the researchers used precision laser pulses to add individual electrons to the qubits.
Elena Glenn, a graduate student at the University of Chicago, said:
The emitted light examines the absence or presence of an electron and reflects about 10,000 times more signal. By converting our fragile quantum state into stable electronic charges, we can measure our state much more easily. With this signal amplification, every time we check the qubit status, we can reach a reliable answer. This type of measurement is called “impulse reading” and we can use many useful quantum technologies with it.
Dimensions of the quantum chip used in this research
Adding individual electrons is like pressing the reset button on your PC; But for quantum states. This eliminates all previously uploaded errors and allows consistent modes to persist. The idea is to bridge the quantum realm to the electronic realm, and the choice of matter is very important. The researchers used the inherent capabilities of silicon carbide; A substance that can work well in both of these areas.
Chris Anderson of the University of Chicago and one of the authors of this article said:
We have basically created a translator that transforms from quantum states into the realm of electrons, which is classical electronic language; Just like what is on your smartphone. We want to build a new generation of devices that are sensitive to single electrons; But they also host quantum states. Silicon carbide can do both; For this reason, we think this material works really well.
Time flows differently in quantum computing; This difference may not seem like much, though. Going from steady quantum states in a fraction of a second to 5 seconds increases the amount of computational useful time extracted from existing qubits and opens up new avenues for increasing processing power beyond the number of pure qubits. According to researchers, this solution can perform about 100 million quantum operations in a period of five seconds. Therefore, quantum computing may become a threat to Bitcoin and its cryptographic algorithm much sooner than expected.
“Avshalom, a senior scientist at the Argonne National Laboratory, said:
It is unusual for quantum information to be preserved in human temporal comparisons. 5 seconds is enough to send a signal at the speed of light to the moon and back. If you are thinking of transporting a qubit to its destination through light, you should keep in mind that that light will still reflect the qubit state correctly even after 40 rotations around the earth, paving the way for the creation of a distributed quantum Internet.
The technology can be paired with photonic-based quantum computing for a scalable, distributed quantum computing network at the speed of light. Researchers expect their findings to allow the development of quantum iterators. It is also hoped that using silicon carbide, there will be room for conventional CMOS (complementary symmetric metal oxide semiconductor) technologies to integrate spin-electron-based systems into classical electrical devices that are sensitive to single charges.