Longitudinal coupling between a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:msub><mml:mrow><mml:mi>Si</mml:mi><mml:mo>/</mml:mo><mml:mi>Si</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Ge</mml:mi><mml:mi>x</mml:mi></mml:msub></mml:math> double quantum dot and an off-chip <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mrow><mml:mi>Ti</mml:mi><mml:mi mathvariant="normal">N</mml:mi></mml:mrow></mml:math> resonator
J. Corrigan, Benjamin Harpt, Nathan Holman, Rusko Ruskov, Piotr Marciniec, D. Rosenberg, D. Yost, Rabindra Das, William D. Oliver, R. McDermott, Charles Tahan, Mark Friesen, M. A. Eriksson
Abstract
Far-off-resonant couplings are useful in quantum computing because they do not require special tunings of device components, but still await further exploration. The authors use a ``flip-chip'' coupling geometry to unequivocally demonstrate the presence of a far-off-resonant longitudinal coupling between a quantum-dot charge qubit and a microwave cavity, which can be turned on or off at will. This work provides a powerful and versatile tool for reading out and coupling quantum-dot qubits over large distances.
Topics & Concepts
Coupling (piping)QubitQuantum dotPhysicsCharge (physics)Reading (process)Quantum computerScrollQuantumComputer scienceAlgorithmQuantum mechanicsPhilosophyMaterials scienceTheologyLinguisticsMetallurgyQuantum and electron transport phenomenaPhotonic and Optical DevicesSemiconductor Quantum Structures and Devices