Oscillations in Josephson transmission line stimulated by load in the presence of noise

Pankratov, A. L.; Pankratova, Evgeniya V.; Shamporov, V. A.; Shitov, S. V.

doi:10.1063/1.4978514

Cited by 18 publications

(5 citation statements)

References 42 publications

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“…One can see that in the latter case the oscillation power increases and can be observed in a much wider frequency range. Therefore, this experimental result is a confirmation of recent theoretical observation that the oscillation power in the case of lag-synchronization (occurring also in the travelling wave regime) can be several orders of magnitude larger than for perfect in-phase synchronization of chain elements [53]. These results also show the advantages of using long Josephson junctions over short ones to develop an effective THz generator.…”

Section: Resultssupporting

confidence: 88%

Response of a Cold-Electron Bolometer on THz Radiation from a Long YBa2Cu3O7−δ Bicrystal Josephson Junction

et al. 2020

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The response of the Cold-Electron Bolometers (CEBs), integrated into a 2-D array of dipole antennas, has been measured by irradiation from YBa2Cu3O7−δ (YBCO) 50 μm long Josephson junction into the THz region at frequencies from 0.1 to 0.8 THz. The possibility of controlling the amplitude-frequency characteristic is demonstrated by the external magnetic field in the traveling wave regime of a long Josephson junction. The YBCO junction has been formed on the bicrystal Zr1−xYxO2 (YSZ) substrate by magnetron sputtering and etching of the film. CEBs have been fabricated using an Al multilayer structure by a self-aligned shadow evaporation technique on Si substrate. Both receiver and oscillator have been located inside the same cryostat at 0.3 K and 2.7 K plates, respectively.

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Section: Resultssupporting

confidence: 88%

Response of a Cold-Electron Bolometer on THz Radiation from a Long YBa2Cu3O7−δ Bicrystal Josephson Junction

et al. 2020

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show abstract

“…One can see that in the latter case the oscillation power increases and can be observed in a much wider frequency range. Therefore, this experimental result is a confirmation of recent theoretical observation that the oscillation power in the case of lag-synchronization (occurring in the travelling wave regime) can be several orders of magnitude larger than for perfect in-phase synchronization of chain elements [52]. These results also show the advantages of using long Josephson junctions over short ones to develop an effective THz generator.…”

Section: V1supporting

confidence: 88%

THz Properties of Long YBaCuO Bicrystal Josephson Junction Studied with a Cold-Electron Bolometer

Pankratov¹,

Revin²,

Gordeeva³

et al. 2020

Preprint

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The response of the Cold-Electron Bolometers (CEBs), integrated into a 2-D array of dipole antennas, has been measured by irradiation from YBa$_2$Cu$_3$O$_{7-\delta}$ (YBCO) 50 $\mu$m long Josephson junction into the THz region at frequencies from 0.1 to 0.8 THz. The possibility of controlling the amplitude-frequency characteristic is demonstrated by the external magnetic field in the traveling wave regime of a long Josephson junction. YBCO junction has been formed on the bicrystal Zr$_{1-x}$Y$_x$O$_2$ (YSZ) substrate by magnetron sputtering and etching of the film. CEBs have been fabricated using an Al multilayer structure by a self-aligned shadow evaporation technique on Si substrate. Both receiver and oscillator have been located inside the same cryostat at 0.3K and 2.7K plates, respectively.

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“…We have shown that the amount of conditioning depends on the type of graph and, along a given “topological” direction, the increase in the gap is uniform over all of the islands: proof of this effect for the rays of a star array has been reported herein. We have reported an observation, to be further developed, of the effects that finite size could have on double-comb structures; the relevance of these type of effects has also been investigated for discrete Josephson structures in the framework of coherent oscillations and radiation generation [ 33 ].…”

Section: Discussionmentioning

confidence: 99%

Josephson Currents and Gap Enhancement in Graph Arrays of Superconductive Islands

Lucci

Cassi

Merlo

et al. 2021

Entropy

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Evidence is reported that topological effects in graph-shaped arrays of superconducting islands can condition superconducting energy gap and transition temperature. The carriers giving rise to the new phase are couples of electrons (Cooper pairs) which, in the superconducting state, behave as predicted for bosons in our structures. The presented results have been obtained both on star and double comb-shaped arrays and the coupling between the islands is provided by Josephson junctions whose potential can be tuned by external magnetic field or temperature. Our peculiar technique for probing distribution on the islands is such that the hopping of bosons between the different islands occurs because their thermal energy is of the same order of the Josephson coupling energy between the islands. Both for star and double comb graph topologies the results are in qualitative and quantitative agreement with theoretical predictions.

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Oscillations in Josephson transmission line stimulated by load in the presence of noise

Cited by 18 publications

References 42 publications

Response of a Cold-Electron Bolometer on THz Radiation from a Long YBa2Cu3O7−δ Bicrystal Josephson Junction

Response of a Cold-Electron Bolometer on THz Radiation from a Long YBa2Cu3O7−δ Bicrystal Josephson Junction

THz Properties of Long YBaCuO Bicrystal Josephson Junction Studied with a Cold-Electron Bolometer

Josephson Currents and Gap Enhancement in Graph Arrays of Superconductive Islands

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