Fermilab invents qubit-based technology to accurately search for dark matter

All theories about the creation of the cosmos explain only 4% of the observable universe, and the rest is filled inDark

These phenomena are the most puzzling components of the cosmos and canexplain the motion of stars and the expansion of the universe.Scientists have not been able to observe this so-called dark sector.Now researchers hope to find a new force that connectsThe opening will allow you toFind out what dark matter and energy are made of, if they exist at all.

Dark matter is an invisible substance that accounts for 85% of all matter in the universe.To find it, a collaboration of scientists has developed superconducting versions of qubits.detect even faint signals emitted by two kinds of hypothetical subatomic particles.These, in turn, may be present in an invisible but ubiquitous part of the universe, the dark sector.

• Axion is considered as one of the candidates for the role of particles that make up dark matter.

• Dark Photon - Hypothetical Elementarya particle, a supposed carrier of a new fundamental interaction, an analogue of photons for dark matter. Along with gravity, it can be a "mediator" between ordinary and dark matter, allowing them to interact with each other.

The new technique for searching for dark matter is 36 times more sensitive to these particles than the quantum limit, a benchmark for conventional quantum measurements that allows the search for unknown matter to be carried out 1,000 times faster. In essence, it is a limitation imposed on the accuracy of a continuous or repeatedly repeated measurement of a quantity described by an operator who does not commutewith yourself at different moments.

The blue cylinder in this diagram representsis a superconducting microwave resonator used to store a dark matter signal. Purple is a qubit. The value refers to the number of photons counted. If dark matter has successfully placed a photon in the resonator, the output will be 1. No amount of photon deposition will result in a 0 measurement. Photo: Akash Dixit, University of Chicago.

In the new method, qubits are designed to detect photons.The advantage of using qubits as detectors instead of traditional technology is their mechanism of interaction with photons. 

The method, presented in Physical Review Letters, examines the photon without destroying it.    It is this feature that promises the success of the new technique for searching for dark matter.

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