Superconducting frustration bit

Tanaka, Y.

doi:10.1016/j.physc.2014.07.011

Cited by 5 publications

(3 citation statements)

References 59 publications

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“…The applications of the superconducting phase, including SQUIDs, remain very limited. We have the opportunity to discover new applications [333] using the interband phase difference.…”

Section: Discussionmentioning

confidence: 99%

Multicomponent superconductivity based on multiband superconductors

Tanaka¹

2015

Supercond. Sci. Technol.

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Multicomponent superconductivity is realized in multiband superconductors when an interband pairing interaction is considerably weaker than the intraband interactions. There is a new quantum phase that originates from the interband phase difference in this superconducting condensate. Firstly, we discuss the applicability of this physical viewpoint for known multiband superconductors. Secondly, topics related to the interband phase difference are treated. Finally, we mention that the Bardeen–Cooper–Schrieffer formalism and the Ginzburg–Landau formalism may not be fully guaranteed when we introduce a fluctuation in the interband phase difference mode. We also address plausible new superconducting electronics using the interband phase difference.

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“…The applications of the superconducting phase, including SQUIDs, remain very limited. We have the opportunity to discover new applications [333] using the interband phase difference.…”

Section: Discussionmentioning

confidence: 99%

Multicomponent superconductivity based on multiband superconductors

Tanaka¹

2015

Supercond. Sci. Technol.

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“…Each result expands the knowledge of the superconducting state of NbSe 2 , sheds light on the nature of Josephson junctions in which the superconductivity both competes with other collective phenomena and is multiband in nature. Further, this work opens new paradigms for electronics [13,14] and quantum computation applications [15,16] in transition metal dichalcogenides. In this Article, the superconducting transport properties of four devices (Samples I-IV) of varying thickness are investigated (see Materials and Methods and Ref.…”

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confidence: 88%

Dynamical Josephson Effects in NbSe$_2$

Tran,

Sell,

Williams

2019

Preprint

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The study of superconducting materials that also possess nontrivial correlations or interactions remains an active frontier of condensed matter physics. NbSe2 belongs to this class of superconductors and recent research has focused on the two-dimensional properties of this layered material. Here an investigation of the superconducting-to-normal-state transition in NbSe2 is detailed, and found to be driven by dynamically-created vortices. Under the application of RF radiation, these vortices allow for two novel Josephson effects to be observed. The first is a coupling between Josephson currents and charge density waves in phase-slip junctions. The second is the Josephson detection of multi-band superconductivity, which is revealed in an anomalous magnetic field and RF frequency response of the AC Josephson effect. Our results shed light on the nature of superconductivity in this material, unearthing exotic phenomena by exploiting nonequilibrium superconducting effects in atomically-thin materials.

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“…Other than the vortex transition cell, numerous other types of flux-based memory cells have also been developed previously [10][11][12][13][14]. New memory devices have been developed including based on magnetic junctions [15][16][17][18][19][20], f-Josephson junctions [21], photon modulated cells [22], superconducting frustration bits [23], hybrid magnetic cells [24], adiabatic quantum flux parametron cells [25], cells with 0-and p-junctions [26], integrated ferromagnetic and superconducting junction cells [27,28], spin-torque transfer cells [29].…”

Section: Introductionmentioning

confidence: 99%

Experimental demonstration of a Josephson cryogenic memory cell based on coupled Josephson junction arrays

Nair

Jafari-Salim

D’Addario

et al. 2019

Supercond. Sci. Technol.

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In this paper, experimental verification for a cryogenic memory cell consisting of three inductively coupled Josephson junctions is presented. Design and operational logic of this type of cell was recently introduced. The basic memory cell operations (read, write, reset) can be implemented on the same simple circuit and this type of memory cell is fundamentally different from the existing single flux quantum-based memory cells. Here, we present design principles and experimental validation for write operations and readout operation for four versions of the design, each with different parameters. Our experimental results show excellent resemblance with the previously presented memory cell operational logic and also show an excellent fit with simulations of the entire memory cell circuit that includes the memory cell and all the peripheral circuitry.

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Superconducting frustration bit

Cited by 5 publications

References 59 publications

Multicomponent superconductivity based on multiband superconductors

Multicomponent superconductivity based on multiband superconductors

Dynamical Josephson Effects in NbSe$_2$

Experimental demonstration of a Josephson cryogenic memory cell based on coupled Josephson junction arrays

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