Energy-Efficient Single Flux Quantum Technology

Mukhanov, Oleg A.

doi:10.1109/tasc.2010.2096792

Cited by 446 publications

(214 citation statements)

References 41 publications

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“…In contrast with the switching solutions proposed in Refs. 6-8, our devices require no additional pump tones, and are driven by Φ 0 -level base-band flux signals, making them compatible with single flux quantum (SFQ) digital controllers 9,10 .…”

mentioning

confidence: 99%

On-chip Josephson junction microwave switch

Naaman

Abutaleb

Kirby

et al. 2016

Applied Physics Letters

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mentioning

confidence: 99%

On-chip Josephson junction microwave switch

Naaman

Abutaleb

Kirby

et al. 2016

Applied Physics Letters

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“…In CMOS designs, power consumption increases with clock frequency, and 100-GHz operation is impractical because of heat problems. On the contrary, the dynamic power needed for an SFQ logic gate which uses more energy-efficient technology, such as ERSFQ, is about 1/10,000 of that needed for a CMOS logic gate [26], e.g., 0.01 μW even at 100 GHz operation. Therefore, such a fine-grained pipeline structure is suitable for SFQ microprocessors.…”

Section: Architectural Design Space Explorationmentioning

confidence: 99%

“…In specifically, γ is the ratio of the power consumption of a certain energy-efficient SFQ logic gate to that of an RSFQ logic gate. We use γ = 1/100 on the assumption that our SFQ microprocessor employs ERSFQ [26], [33]. We assume that P FPU linearly increases with its bit width and we calculate that the power consumption of the 32-bit FPU is 32 times greater than that of the bit-serial FPU [34].…”

Section: Comparison With Cmos Microprocessor Modelsmentioning

confidence: 99%

Towards Ultra-High-Speed Cryogenic Single-Flux-Quantum Computing

Ishida

Tanaka

Ono

et al. 2018

IEICE Trans. Electron.

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SUMMARYCMOS microprocessors are limited in their capacity for clock speed improvement because of increasing computing power, i.e., they face a power-wall problem. Single-flux-quantum (SFQ) circuits offer a solution with their ultra-fast-speed and ultra-low-power natures. This paper introduces our contributions towards ultra-high-speed cryogenic SFQ computing. The first step is to design SFQ microprocessors. From qualitatively and quantitatively evaluating past-designed SFQ microprocessors, we have found that revisiting the architecture of SFQ microprocessors and on-chip caches is the first critical challenge. On the basis of cross-layer discussions and analysis, we came to the conclusion that a bit-parallel gate-level pipeline architecture is the best solution for SFQ designs. This paper summarizes our current research results targeting SFQ microprocessors and onchip cache architectures.

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“…Development of new low power micro-circuitry is a crucial requirement for future digital information technologies [1][2][3][4][5][6]. Superconducting materials capable of transferring electric signals without dissipation provide a potential solution towards this goal.…”

Section: Introductionmentioning

confidence: 99%

Manipulating Abrikosov vortices with soft magnetic stripes

Vlasko-Vlasov

Colauto

Buzdin³

et al. 2017

Phys. Rev. B

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Tuning the polarization of a periodic array of magnetic stripes on top of a superconducting film allows control of Abrikosov vortex motion. Using direct magneto-optical imaging of the vortex patterns, we demonstrate that the proximity of the magnetic stripe ends to the edges of the superconducting film can strongly alter the vortex dynamics. We observe qualitatively different vortex behavior when the stripes overlap with the film edges. From the resulting unique magnetic flux patterns, we calculate the magnetic pinning strength of our stripe array and study effects of the modified edge barrier on vortex guidance and gating that result from different polarizations of the stripes .

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Energy-Efficient Single Flux Quantum Technology

Cited by 446 publications

References 41 publications

On-chip Josephson junction microwave switch

On-chip Josephson junction microwave switch

Towards Ultra-High-Speed Cryogenic Single-Flux-Quantum Computing

Manipulating Abrikosov vortices with soft magnetic stripes

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