Researchers at the Joint Quantum Institute (JQI) have developed a groundbreaking theory for amplifying faint electrical signals using nanomechanical vibrations. The proposed device consists of a nanomechanical membrane connected to an electrical circuit. When a weak electrical signal is applied, it causes the membrane to vibrate, which affects the resonant frequency of a laser optical cavity. This results in light being emitted at a frequency that is the sum of the original laser frequency and the signal from the atoms, enabling the detection of extremely faint electrical signals.
The same technology could revolutionize quantum information science by enabling more efficient data transfer between quantum processors. The ‘nanospeaker’ could translate low-energy signals from a quantum processor to optical photons, where they can be detected and transmitted from one qubit to another. Additionally, the system would naturally cool itself, reducing noise and improving signal detection.
The research, published in Phys. Rev. Lett., demonstrates the potential for this technology to revolutionize the field of quantum information science and improve MRI machines by reducing the strength and size of the magnets required for readings.
Keywords: Signal, Amplification, Nanomechanical, Resonance, Laser
