The quantum domains of atomic particles are bound together randomly. But the control of quantum systems, such as quantum computers, is crucial to modern quantum science and prospective quantum technology.
In the ancient world, time always moved forward. But in the quantum world, time is indefinable and reversible. And it is from this time of revolution that scientists try to control the process of quantum. For example, spin theory – proposed by Erwin Hahn in 1950 – is widely observed in quantum spin systems and is the basis for magnetic resonance and magnetic resonance systems.
However, applying such a time transition is more difficult in a complex quantum condensed system – that is, a quantum system with an infinite number of degrees of freedom. Of course, quantum unity is quickly lost when interacting with the environment.
Now, a study by Atsushi Ono, an assistant professor in the Department of Physics at Tohoku University, has revealed a new type of echo phenomenon in the structure of energy in crystalline solids. The so-called “echoes echoes energy” was discovered after the group began to clearly study the ultrafast dynamics of optically driven quasiparticles in crystalline solids.
A summary of their findings was published in the Journal Physical Review Research on November 30, 2022.
Numerical analysis and experimental details of the group showed that the electric current causes the particles to interact with each other, and that the photo excitation process produces resonance when the quasiparticles combine. These acoustic waves carry information about the dispersion relations of quasiparticles.
Furthermore, Ono and his colleagues have detected energy resonances even in tightly coupled systems, where electrons are not well defined due to physical interactions.
“Our research provides a different perspective on the ultrafast dynamics of light that is controlled and regulated,” said Ono. “Energy resonance can be used for the complete observation of fast-resolved spectroscopy of quasiparticles in solid crystals and cold atoms in optical lattices, even when strong multi-body interactions exist.”
