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Coherent control of a hybrid superconducting circuit made with van der Waals heterostructures

William D. Oliver

Bulletin of the American Physical SocietyMar 15, 20210 citations

Microwave probes of quantum matter : probing quantum spin liquids and van der Waals heterostructures using superconducting circuits

Sandesh S. Kalantre, David Goldhaber‐Gordon, C. G. L. Bøttcher +3 more

Sep 9, 20260 citations

Integrating Quantum Coherent Circuitry with Classical Superconducting Electronics

Jonathan L. Habif, M. J. Feldman, Mark F. Bocko

APSMar 1, 20040 citations

Control of hybrid superconducting quantum circuits based on advanced nanomaterials

Shima Poorgholam-Khanjari

Abstract not currently available.

Jan 1, 20260 citations

Electric Dipole Coupling of a Bilayer Graphene Quantum Dot to a High-Impedance Microwave Resonator

Max Josef Ruckriegel, Lisa Maria Gächter, David Kealhofer +12 more

High Resolution Image Download MS PowerPoint Slide We implement circuit quantum electrodynamics (cQED) with quantum dots in bilayer graphene, a maturing material platform that can host long-lived spin and valley states. Our device combines a high-impedance ( Z r ≈ 1 kΩ) superconducting microwave resonator with a double quantum dot electrostatically defined in a graphene-based van der Waals heterostructure. Electric dipole coupling between the subsystems allows the resonator to sense the electric susceptibility of the double quantum dot from which we reconstruct its charge stability diagram. We achieve sensitive and fast detection of the interdot transition with a signal-to-noise ratio of 3.5 within 1 μs integration time. The charge–photon interaction is quantified in the dispersive and resonant regimes by comparing the resonator response to input–output theory, yielding a coupling strength of g /2π = 49.7 MHz. Our results introduce cQED as a probe for quantum dots in van der Waals materials and indicate a path toward coherent charge–photon coupling with bilayer graphene quantum dots.High Resolution Image Download MS PowerPoint Slide We implement circuit quantum electrodynamics (cQED) with quantum dots in bilayer graphene, a maturing material platform that can host long-lived spin and valley states. Our device combines a high-impedance ( Z r ≈ 1 kΩ) superconducting microwave resonator with a double quantum dot electrostatically defined in a graphene-based van der Waals heterostructure. Electric dipole coupling between the subsystems allows the resonator to sense the electric susceptibility of the double quantum dot from which we reconstruct its charge stability diagram. We achieve sensitive and fast detection of the interdot transition with a signal-to-noise ratio of 3.5 within 1 μs integration time. The charge–photon interaction is quantified in the dispersive and resonant regimes by comparing the resonator response to input–output theory, yielding a coupling strength of g /2π = 49.7 MHz. Our results introduce cQED as a probe for quantum dots in van der Waals materials and indicate a path toward coherent charge–photon coupling with bilayer graphene quantum dots.

arXiv:2312.14629Nano LettersJun 4, 20248 citations

Radio-frequency response of a graphene Josephson junction based superconducting oscillator circuit

Subhamoy Ghatak, Joydip Sarkar, Pratap Chandra Adak +7 more

Bulletin of the American Physical SocietyMar 4, 20200 citations

Coherent control of a hybrid superconducting circuit made with graphene-based van der Waals heterostructures

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