Frequency-tunable nano-oscillator device and computing unit using the same
A nano-oscillator device includes a switching element configured to be switched to an ON state at a threshold voltage or above and switched to an OFF state below a holding voltage; and a load element connected to the switching element in series. In the nano-oscillator device, vibration characteristics are implemented by using a switching element and a load element connected thereto in series. Also, the oscillation frequency of the output waveform of the oscillator may be adjusted in real time according to a gate voltage by using a field effect transistor serving as a load element. Using a synchronization characteristic in which the oscillation frequency and phase are locked with respect to an external input, it is possible to implement a computing system based on a network in which a plurality of oscillator devices are coupled.
1. An oscillator-based computing unit, which is implemented using a network in which a plurality of nano-oscillator devices are coupled, wherein each of the nano-oscillator devices, consisting of:
a switching element configured to be switched to an ON state at a threshold voltage or above and switched to an OFF state below a holding voltage; and
a load element connected to the switching element in series,
wherein an output waveform at a node between the switching element and the load element has a vibration characteristic that is repeated at a predetermined period,
wherein a power supply provides a DC voltage to a first terminal of the nano-oscillator device, a second terminal of the nano-oscillator device is grounded, and the first terminal and the second terminal are different from the node,
wherein a phase difference between adjacent oscillator devices depends on a coupling force therebetween.
2. The oscillator-based computing unit according to claim 1 ,
wherein the load element is a transistor element, and
wherein an oscillation frequency of the output waveform is adjusted in real time according to a gate voltage applied to the transistor element.
3. The oscillator-based computing unit according to claim 1 ,
wherein the load element is a resistor element.
4. The oscillator-based computing unit according to claim 3 ,
wherein an oscillation frequency of the output waveform is determined according to a resistance value of the resistor element.
5. The oscillator-based computing unit according to claim 1 ,
wherein each of the nano-oscillator devices is connected to a nano-oscillator device adjacent thereto by a field effect transistor.
6. The oscillator-based computing unit according to claim 5 ,
wherein the connection element is the field effect transistor,
wherein the phase difference between the adjacent oscillator devices is controlled according to a change of a gate voltage applied to a gate terminal of the field effect transistor.
7. The oscillator-based computing unit according to claim 1 ,
wherein each of the nano-oscillator devices is connected to a nano-oscillator device adjacent thereto by a resistor.
8. The oscillator-based computing unit according to claim 7 ,
wherein the phase difference between the adjacent oscillator devices is controlled by setting a resistance value of the resistor.