Currently, there are many research groups and societies that work on the development of people as many computers. And the most surprising thing is that they are using a wide range of technologies. They are superconducting qubits, traps, throats inserted into macromolecules, neutral atoms. these kinds of qubits It is convenient because it means that we continue on several journeys capable of fully functional quantum computers correct your mistakes.
Qubits are the real protagonists of this article, so it is worth briefly reviewing what their function is and why they are a fundamental element of quantum computers. A qubit is a physical device that is the smallest unit of data processed by a quantum machine. It is surprising that different bits do not have a single value at a given time; what they have is a composite of the states of nothing and one at the same time;
They can have a lot of state, zero and little state. There are many states or one and a small state. For it is the same in both. You can think of these two states or some other combination. The physics behind how the qubit state is encoded is complex. It is not necessary for us to continue in this part with the article, but it is interesting that we know how much state is associated with characters such as electronic threads, which is an intrinsic property of the particles of elements, just like the electric charge, derived from the moment of angular rotation.
Current qubits never rest
We can guess that qubits, of any kind, are remarkably sophisticated. And they have a curiously very exotic thing: they never rest. This being said, it seems like a positive characteristic, but it is not. In fact, its constant activity prompts the emergence of a problem that researchers working in the field of quantum computers know well: the protection and operation dilemma. To find out what it is, we must first know that qubits that have been at rest for a certain period of time lose information.
A group of researchers from Trinity College Dublin has developed a universal protocol that has been used to measure information stored in qubits at rest.
At first it seems strange that questions that are not involved in solving the problem at some point can lose information, but it is a quantitative phenomenon. In fact, a group of researchers from Trinity College Dublin has developed a universal protocol that serves precisely that more accurately measure the leakage information at a given moment the qubits are at rest. These scientists published their work in npj quantum informationwhich belongs to Nature, and its contribution is important, because it is an instrument which becomes valuable about mistakes how much computers commit and to optimize fault mitigation algorithms.
Ideally, idle qubits do nothing. But, as we have just seen, they do. And there is something to worry about researchers. The protection and operation dilemma, which I mentioned a few lines above, seeks to find a way to separate the qubits in moments of inertia, so that they do not encounter a data leak, and at the same time allow them to interact with each other in an efficient manner. only
Now, the loss of data is one of the challenges that must be solved as the number of qubits in quantum computers can increase dramatically. And it is essential to reach fully functional devices more qubits. Probably hundreds of thousands, or even millions. Fortunately, scientists are in it. Let’s cross our fingers to avoid data loss once and for all.
Image | IBM
More information | npj quantum information
