These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: A singlet-triplet hole-spin qubit in MOS silicon.
    Author: Liles SD, Halverson DJ, Wang Z, Shamim A, Eggli RS, Jin IK, Hillier J, Kumar K, Vorreiter I, Rendell MJ, Huang JY, Escott CC, Hudson FE, Lim WH, Culcer D, Dzurak AS, Hamilton AR.
    Journal: Nat Commun; 2024 Sep 03; 15(1):7690. PubMed ID: 39227367.
    Abstract:
    Holes in silicon quantum dots are promising for spin qubit applications due to the strong intrinsic spin-orbit coupling. The spin-orbit coupling produces complex hole-spin dynamics, providing opportunities to further optimise spin qubits. Here, we demonstrate a singlet-triplet qubit using hole states in a planar metal-oxide-semiconductor double quantum dot. We demonstrate rapid qubit control with singlet-triplet oscillations up to 400 MHz. The qubit exhibits promising coherence, with a maximum dephasing time of 600 ns, which is enhanced to 1.3 μs using refocusing techniques. We investigate the magnetic field anisotropy of the eigenstates, and determine a magnetic field orientation to improve the qubit initialisation fidelity. These results present a step forward for spin qubit technology, by implementing a high quality singlet-triplet hole-spin qubit in planar architecture suitable for scaling up to 2D arrays of coupled qubits.
    [Abstract] [Full Text] [Related] [New Search]