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Showing 1–7 of 7 results
Advanced filters: Author: Anasua Chatterjee Clear advanced filters

  • In a gate defined quantum dot in Bernal bilayer graphene, a combination of spin and valley protection diminishes spin relaxation drastically and yields a lifetime of 38 seconds.

    • Anasua Chatterjee
    News & Views
    Nature Nanotechnology
    Volume: 20, P: 466-467

  • 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

  • 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

  • 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

  • Local temperature measurements are important in the study of quantum thermodynamics at the nanoscale. The authors report a sensor based on cyclic electron tunnelling between a quantum dot and single-electron reservoir which can be used to provide local and precise temperature measurements in nanoelectronic devices.

    • Imtiaz Ahmed
    • Anasua Chatterjee
    • M. Fernando Gonzalez-Zalba
    ResearchOpen Access
    Communications Physics
    Volume: 1, P: 1-7

  • Gate-defined quantum dots are a promising candidate system for realizing scalable, coupled qubit systems and serving as a fundamental building block for quantum computers. However, present-day quantum dot devices suffer from imperfections that must be accounted for, which hinders the characterization, tuning, and operation process. Moreover, with an increasing number of quantum dot qubits, the relevant parameter space grows sufficiently to make heuristic control infeasible. Thus, it is imperative that reliable and scalable autonomous tuning approaches are developed. This meeting report outlines current challenges in automating quantum dot device tuning and operation with a particular focus on datasets, benchmarking, and standardization. We also present insights and ideas put forward by the quantum dot community on how to overcome them. We aim to provide guidance and inspiration to researchers invested in automation efforts.

    • Justyna P. Zwolak
    • Jacob M. Taylor
    • Brian Weber
    News & ViewsOpen Access
    npj Quantum Information
    Volume: 10, P: 1-8