Nonlocal signatures of hybridization between quantum dot and Andreev bound states

Pöschl, Andreas; Danilenko, Alisa; Sabonis, Deividas; Kristjuhan, Kaur; Lindemann, Tyler; Thomas, Candice; Manfra, Michael J.; Marcus, C. M.

doi:10.1103/physrevb.106.l161301

Cited by 13 publications

(2 citation statements)

References 52 publications

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“…For the 2DEG, we choose a semiconductor stack similar to the ones used in many modern experiments, e.g. [37][38][39]. Figure 1(a) display the schematic of a cross-section of a 2DEG nanowire.…”

Section: Calibration and Benchmarkmentioning

confidence: 99%

Orbital-free approach for large-scale electrostatic simulations of quantum nanoelectronics devices

Svejstrup

Maiani

Hoogdalem

et al. 2023

Semicond. Sci. Technol.

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The route to reliable quantum nanoelectronic devices hinges on precise control of the electrostatic environment. For this reason, accurate methods for electrostatic simulations are essential in the design process. The most widespread methods for this purpose are the Thomas-Fermi approximation, which provides quick approximate results, and the Schrödinger-Poisson method, which better takes into account quantum mechanical effects. The mentioned methods suffer from relevant shortcomings: the Thomas-Fermi method fails to take into account quantum confinement effects that are crucial in heterostructures, while the Schrödinger-Poisson method suffers severe scalability problems. This paper outlines the application of an orbital-free approach inspired by density functional theory. By introducing gradient terms in the kinetic energy functional, our proposed method incorporates corrections to the electronic density due to quantum confinement while it preserves the scalability of a theory that can be expressed as a functional minimization problem. This method offers a new approach to addressing large-scale electrostatic simulations of quantum nanoelectronic devices.

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Section: Calibration and Benchmarkmentioning

confidence: 99%

Orbital-free approach for large-scale electrostatic simulations of quantum nanoelectronics devices

Svejstrup

Maiani

Hoogdalem

et al. 2023

Semicond. Sci. Technol.

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“…EC is a competing process with CAR and it should be suppressed in order to achieve CPS. Experimentally CPS has been achieved in QD devices realized in InAs and InSb nanowires [8][9][10][11][12][13], carbon nanotubes [14,15], graphene based QDs [16][17][18], and recently in 2DEGs [19]. Alongside the experimental effort, substantial theoretical work has also been devoted to the study of CPS in QD based devices [2,3,[20][21][22].…”

mentioning

confidence: 99%

Non-local Andreev reflection through Andreev molecular states in graphene Josephson junctions

et al. 2023

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We propose that a device composed of two vertically stacked monolayer graphene Josephsonjunctions can be used for Cooper pair splitting. The hybridization of the Andreev bound states ofthe two Josephson junction can facilitate non-local transport in this normal-superconductor hybridstructure, which we study by calculating the non-local differential conductance. Assuming that oneof the graphene layers is electron and the other is hole doped, we find that the non-local Andreevreflection can dominate the differential conductance of the system. Our setup does not require theprecise control of junction length, doping, or superconducting phase difference, which could be animportant advantage for experimental realization.

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Subgap States in Semiconductor-Superconductor Devices for Quantum Technologies: Andreev Qubits and Minimal Majorana Chains

Seoane Souto,

Aguado

2024

Lecture Notes in Physics

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Nonlocal signatures of hybridization between quantum dot and Andreev bound states

Cited by 13 publications

References 52 publications

Orbital-free approach for large-scale electrostatic simulations of quantum nanoelectronics devices

Orbital-free approach for large-scale electrostatic simulations of quantum nanoelectronics devices

Non-local Andreev reflection through Andreev molecular states in graphene Josephson junctions

Subgap States in Semiconductor-Superconductor Devices for Quantum Technologies: Andreev Qubits and Minimal Majorana Chains

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