In order to make the most of the benefits of quantum computers, you need to have
The authors of the new work thought about this problem.and created a new method of cross-validation: it allows you to verify the results of a calculation performed on one device by calculating the same data on another device: it is important that the calculation algorithm is not completely similar to the original one.
The authors used an alternative modelquantum computing, built on graph structures: this is how many different alternative computations can be generated from a common source to test the results of a quantum computer.
The researchers noted that there are certain outputs that need to be matched if the devices are working properly.
The team tested their method on five modern quantum computers using four different hardware technologies.
The new approach works on modern equipmentwithout any special requirements. Another important advantage is that researchers do not need to look at all the results of the calculations, as this can be very time-consuming. It is enough to check how often both devices agree at intermediate stages and in the end. This can be done even for very large quantum computers.
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