A Ballistic Graphene Cooper Pair Splitter

Abstract

We report an experimental study of Cooper pair splitting in an encapsulated graphene based multiterminal junction in the ballistic transport regime. Our device consists of two transverse junctions, namely the superconductor/graphene/superconductor and the normal metal/graphene/normal metal junctions. In this case, the electronic transport through one junction can be tuned by an applied bias along the other. We observe clear signatures of Cooper pair splitting in the local as well as nonlocal electronic transport measurements. Our experimental data can be very well described by using a modified Octavio-Tinkham-Blonder-Klapwijk model and a three-terminal beam splitter model.

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• Controllable Single Cooper Pair Splitting in Hybrid Quantum Dot Systems
• Perfect crossed Andreev reflection in the proximitized graphene/superconductor/proximitized graphene junctions
• Proposal for detecting the $\pi -$shifted Cooper quartet supercurrent
• Dynamic Cooper Pair Splitter
• Adiabatic Cooper pair splitter
• Optimal Entanglement Witness for Cooper Pair Splitters
• Andreev and normal reflections in gapped bilayer graphene-superconductor junctions
• Energy distribution controlled ballistic Josephson junction
• Non-local Andreev reflection through Andreev molecular states in graphene Josephson junctions
• Entangled Photon-Pair Emission in Waveguide Circuit QED from a Cooper Pair Splitter
• Electrical and thermal transport in a twisted heterostructure of transition metal dichalcogenide and CrI${}_3$ connected to a superconductor
• Nonequilibrium Andreev resonances in ballistic graphene Andreev interferometers
• Wigner representation of Andreev-reflected charge pulses
• Cooper-pair splitters as circuit elements for realizing topological superconductors
• Multiterminal Josephson junctions with tunable topological properties
• Specular-Andreev reflection and Andreev interference in an Ising superconductor junction
• Multiterminal ballistic Josephson junctions coupled to normal leads