Phys.org February 12, 2019
To study the light-matter interaction an international team of researchers (japan, Ukraine) coupled the cyclotron motion of a collection of electrons on the surface of liquid helium to the microwave field. For the corotating component of the microwave field, the strong coupling is pronouncedly manifested by the normal-mode splitting in the spectrum of coupled field-particle motion. For the counterrotating component of the microwave field, they observed a strong resonance when the microwave frequency is close to both the cyclotron and cavity frequencies. They found that fluctuations in the speed, location or overall charge of individual electrons had little influence over the strong coupling effects. Instead, the average movement of particles and microwaves, en masse, appeared to trigger an exchange of energy and information between them. The findings may contribute to future quantum computing technology…read more. TECHNICAL ARTICLE 1 , 2
The Quantum Dynamics Unit traps a 2-D layer of electrons in liquid helium, held inside a sealed chamber and cooled to nearly absolute zero. Credit: Okinawa Institute of Science and Technology Graduate University – OIST