Physicists have found a way to "save" Schrödinger's cat

Researchers at Yale University were able to develop a quantum jump detector and experimentally trace how this process occurs. The information obtained allowed them to design the concept of the mechanism of the reverse process - the prevention of a quantum leap. In theory, this could be a solution to the famous paradox, which will allow to "save" Schrödinger's cat.

Researchers have worked with qubits in the form of artificial atoms, trying to solve one of the problems of quantum computing. Every time a subject interacts with a qubit, he can make a quantum leap - go to another state, and the probability of this cannot be predicted, which prevents him from making long-term plans for a quantum computing system. Scientists set the task to try to predict the beginning of the jump, to receive a signal in advance in order to be able to react to it.

In the experiment, a qubit in a sealed aluminum case is irradiated from three microwave generators in three planes. The fourth ray controls the qubit capacitance itself. While the qubit is in a stable state, it emits photons, and they bombard the body, which is recorded by the sensors. The disappearance of photons means that the qubit has changed and is on the cusp of a quantum leap. It turned out that this is not an instantaneous process - after a series of 6, 8 million experiments, it was proved that a quantum leap proceeds according to the same scenario and resembles not a "flip of a toggle switch", but rather a "slide of a slider".

Scientists admit that they never learned how to accurately predict the time of the onset of a quantum leap - it can occur in the next minute or in a day. But they got a chance to detect the beginning of the process, which provides a tiny amount of time during which a stabilizing pulse can be sent to return the qubit to its previous state. In the case of Schrödinger's cat, it would look like an attempt to open the box and immediately insert the antidote into the slot to save the animal, which may have just received a dose of poison.