Weyl singularities in polaritonic multiterminal Josephson junctions

Septembre, I.; Meyer, Jacques; Solnyshkov, D. D.; Malpuech, Guillaume

doi:10.1103/physrevb.107.165301

Cited by 5 publications

(2 citation statements)

References 90 publications

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“…A completely different approach involves using gapped superfluids of cavity exciton-polaritons in a multiterminal setup, as proposed in ref. [59]. The advantage of these artificial systems is that topological transitions can be controlled by pump lasers with well-defined phases, while the photonic component of the eigenstates, and so their topological properties [60,61], is experimentally accessible.…”

Section: On the Effect Of The Quasiparticle Continuum -mentioning

confidence: 99%

Multi-terminal Josephson junctions: A road to topological flux networks

Gavensky

Usaj

Balseiro

2023

EPL

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Multi-terminal Josephson junctions were recently proposed as a versatile and tunable platform to emulate topological Bloch-like Hamiltonians in arbitrary dimensions. In this perspective article, we will give a brief overview of the subject and recognize these mesoscopic devices as realizations of topological flux networks as the ones envisioned by J. E. Avron and coworkers in their seminal works on the early days of the quantum Hall effect. We summarize the current state-of-the-art theoretical and experimental research regarding these Josephson devices, highlighting recent developments and giving an outlook on current trends.

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Section: On the Effect Of The Quasiparticle Continuum -mentioning

confidence: 99%

Multi-terminal Josephson junctions: A road to topological flux networks

Gavensky

Usaj

Balseiro

2023

EPL

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“…Prime examples are topological photonics [9,10], topological driven Floquet systems [11] and topological electrical circuits [12]. This idea was also successfully transferred to multiterminal Josephson junctions that can host topological Andreev bound states in the space of superconducting phase differences [13][14][15][16][17][18][19][20][21][22][23][24][25][26] or topological superconducting circuits. [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Ground state topology of a four-terminal superconducting double quantum dot

Teshler,

Weisbrich,

Sturm

et al. 2023

SciPost Phys.

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In recent years, various classes of systems were proposed to realize topological states of matter. One of them are multiterminal Josephson junctions where topological Andreev bound states are constructed in the synthetic space of superconducting phases. Crucially, the topology in these systems results in a quantized transconductance between two of its terminals comparable to the quantum Hall effect. In this work, we study a double quantum dot with four superconducting terminals and show that it has an experimentally accessible topological regime in which the non-trivial topology can be measured. We also include Coulomb repulsion between electrons which is usually present in experiments and show how the topological region can be maximized in parameter space.

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