Pairwise coupled hybrid vanadium dioxide-MOSFET (HVFET) oscillators for non-boolean associative computing

Shukla, Nikhil; Parihar, Abhinav; Cotter, Matthew; Barth, Michael; Li, X.; Chandramoorthy, Nandhini; Paik, Hanjong; Schlom, Darrell G.; Narayanan, Vijaykrishnan; Raychowdhury, Arijit; Datta, Suman

doi:10.1109/iedm.2014.7047129

Cited by 70 publications

(46 citation statements)

References 2 publications

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“…We observe that the coupled oscillators provide a power reduction of 20 × over CMOS, reflecting the advantage of letting physics do the computing approach and potentially removing the Boolean bottleneck. For further details, interested readers are pointed to the previous work by the authors [16].…”

Section: Image Data Processing and Analyticsmentioning

confidence: 99%

“…When the series resistances are replaced by transistors, as shown in Figure 3, and the coupling is a simple capacitive coupling, a pair of coupled D-R oscillators can be used as an analog comparator whose output has the form of a difference norm [16,26,27]. Typical steady-state orbits of the coupled system plotted in a v 1 × v 2 plane are shown in Figure 4A.…”

Section: D-r Oscillatorsmentioning

confidence: 99%

“…Recently, the development of novel phase transition materials like vanadium dioxide (VO 2 ) and corresponding electronic devices, which show insulator-to-metal transitions (IMTs) [14], has sparked interest in creating compact relaxation oscillators [15,16]. These oscillators, when coupled to each other, exhibit phase synchronization, which can be used for phase-based computing.…”

Section: Introductionmentioning

confidence: 99%

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Computing with dynamical systems based on insulator-metal-transition oscillators

et al. 2017

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Abstract:In this paper, we review recent work on novel computing paradigms using coupled oscillatory dynamical systems. We explore systems of relaxation oscillators based on linear state transitioning devices, which switch between two discrete states with hysteresis. By harnessing the dynamics of complex, connected systems, we embrace the philosophy of "let physics do the computing" and demonstrate how complex phase and frequency dynamics of such systems can be controlled, programmed, and observed to solve computationally hard problems. Although our discussion in this paper is limited to insulator-to-metallic state transition devices, the general philosophy of such computing paradigms can be translated to other mediums including optical systems. We present the necessary mathematical treatments necessary to understand the time evolution of these systems and demonstrate through recent experimental results the potential of such computational primitives.

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Section: Image Data Processing and Analyticsmentioning

confidence: 99%

Section: D-r Oscillatorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Computing with dynamical systems based on insulator-metal-transition oscillators

et al. 2017

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“…Such applications usually require associative processing that involves finding the "degree of match" between two quantities (e.g. input and stored template) [35]. Associative processing algorithms implemented in the Boolean computing framework which processes information in a binary (1 or 0) format are computationally expensive; an oscillator based non-Boolean approach that harnesses their non-linear phase and frequency synchronization dynamics can provide an energy efficient hardware platform [34] for such applications.…”

Section: Conclusion and Future Perspectivementioning

confidence: 99%

Modeling and Simulation of Vanadium Dioxide Relaxation Oscillators

Maffezzoni

Daniel

Shukla

et al. 2015

IEEE Trans. Circuits Syst. I

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Abstract-This paper deals with modeling and simulation of a new family of two-terminal devices fabricated with vanadium dioxide material. Such devices allow realization of very compact relaxation nano-oscillators that can be connected electronically to form arrays of coupled oscillators. Challenging applications of oscillator arrays include the realization of multi-phase signal generators and massively parallel brain-inspired neurocomputing. In the paper, a circuit-level model of the vanadium dioxide device is provided which enables extensive electrical simulations of oscillator systems built on the device. The proposed model is exploited to explain the dynamics of vanadium dioxide relaxation oscillators as well as to accomplish a robust parameter design. Applications to the realization of voltage-controlled oscillators and of multi-phase oscillator arrays are illustrated.

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“…In general, coupled oscillators have shown to solve associative processes [122,122,167,152]. Recently, pairwise coupling was experimentally demonstrated in [188]. Application-specific algorithms have been proposed for signal processing [49,67,65,66] for a while.…”

Section: Introductionmentioning

confidence: 99%