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According to a recent report by the Physicist Organization Network, scientists at the Institute of Quantum Computing at the University of Waterloo in Canada have created the strongest photon-to-substance coupling record to date, which is more than ten times stronger than before. The researchers said that the latest results published in the journal Nature Physics will make it possible for many current physics studies to be impossible.
In order to obtain this strong coupling effect, the research team led by the lead author of the research paper, Dr. Bauer Fern-Dazs of IQC, built an aluminum circuit, which was then put into a diluting refrigerant and allowed to cool to absolute zero. Above one hundredth Celsius. At such cold temperatures, the circuit has superconductivity, which means that the current passes through them without resistance or loss of energy. The so-called superconducting qubits in these aluminum circuits follow the laws of quantum mechanics, and they behave like artificial atoms.
To control the quantum state of this superconducting circuit, researchers used microwave pulses to send photons into a superconducting circuit and applied a small magnetic field. By measuring the photon transmission, the researchers determined the resonance of the qubits. Fern-Datz explained that they measured a wider range of resonance frequencies than the quantum bits themselves. This means that there is a very strong interaction between photons and qubits.
Fern-Daze said: "With the latest research, we are bringing research on light-matter interaction into a new field and entering the field of quantum optics. Our circuit has the potential to serve as a quantum simulator for studying other interesting aspects of nature. Quantum systems are used. This strong quantum coupling between light and qubits helps scientists further explore physics related to biological materials, high temperature superconductors, and other exotic materials and even relativity theory." (Reporter Liu Xia)
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