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Showing 1–8 of 8 results
Advanced filters: Author: Ferdinand Kuemmeth Clear advanced filters

  • Controllable two-qubit interactions are necessary to build a functional quantum computer. Here the authors demonstrate fast, coherent swapping of two spin states mediated by a long, multi-electron quantum dot that could act as a tunable coupler mediating interactions between multiple qubits.

    • Filip K. Malinowski
    • Frederico Martins
    • Ferdinand Kuemmeth
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-6

  • Real-time adaptive control of a qubit has been demonstrated but limited to single-axis Hamiltonian estimation. Here the authors implement two-axis control of a singlet-triplet spin qubit with two fluctuating Hamiltonian parameters, resulting in improved quality of coherent oscillations.

    • Fabrizio Berritta
    • Torbjørn Rasmussen
    • Ferdinand Kuemmeth
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-9

  • Semiconductor spin-qubits with CMOS compatible architectures could benefit from the industrial capacity of the semiconductor industry. Here, the authors make the first steps in demonstrating this by showing single electron operations within a two-dimensional array of foundry-fabricated quantum dots.

    • Fabio Ansaloni
    • Anasua Chatterjee
    • Ferdinand Kuemmeth
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • The authors achieve gate-controlled proximitization of a quantum dot in a planar germanium heterostructure, an isotopically purifiable group IV material. A patterned Pt germanosilicide superconductor is introduced via a thermally activated reaction.

    • Lazar Lakic
    • William I. L. Lawrie
    • Anasua Chatterjee
    ResearchOpen Access
    Nature Materials
    Volume: 24, P: 552-558

  • Nuclear spins in gallium arsenide produce noise at discrete frequencies, which can be notch-filtered efficiently to extend coherence times of electron spin qubits to nearly 1 ms.

    • Filip K. Malinowski
    • Frederico Martins
    • Ferdinand Kuemmeth
    Research
    Nature Nanotechnology
    Volume: 12, P: 16-20

  • Spin doublets of holes in nanowires with a germanium core and a silicon shell can be manipulated in fast-gated double quantum dots to create quantum bits with long spin lifetimes.

    • Yongjie Hu
    • Ferdinand Kuemmeth
    • Charles M. Marcus
    Research
    Nature Nanotechnology
    Volume: 7, P: 47-50

  • Semiconductor qubits are expected to have diverse future quantum applications. This Review discusses semiconductor qubit implementations from the perspective of an ecosystem of applications, such as quantum simulation, sensing, computation and communication.

    • Anasua Chatterjee
    • Paul Stevenson
    • Ferdinand Kuemmeth
    Reviews
    Nature Reviews Physics
    Volume: 3, P: 157-177