Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–12 of 12 results
Advanced filters: Author: A. Greilich Clear advanced filters

  • Could holes in semiconductor quantum dots be a more appealing alternative to electrons for realizing stable and scalable solid-state spin qubits for quantum information processing? The latest findings detailing two coupled dots and improved coherence times suggest that the answer may be yes.

    • Alexander Tartakovskii
    News & Views
    Nature Photonics
    Volume: 5, P: 647-649

  • Recent work has demonstrated a continuous time crystal in an electron-nuclear spin system in the InGaAs semiconductor. Here, using periodic modulation, the authors reveal effects of synchronization, quasi-periodic, and chaotic dynamics, demonstrating universal nonlinear effects in a time-crystalline platform.

    • Alex Greilich
    • Nataliia E. Kopteva
    • Manfred Bayer
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-9

  • Time crystals spontaneously produce periodic oscillations that are robust to perturbations. A time crystal phase with a long coherence time has now been produced using the electron and nuclear spins of a semiconductor sample.

    • A. Greilich
    • N. E. Kopteva
    • M. Bayer
    Research
    Nature Physics
    Volume: 20, P: 631-636

  • The spin state of electrons trapped in a quantum dot only lasts a few microseconds. Before this information is lost, it is useful to controllably rotate the spin as many times as possible. Laser pulses can now rotate electron spins in an ensemble of quantum dots in just a few picoseconds.

    • A. Greilich
    • Sophia E. Economou
    • M. Bayer
    Research
    Nature Physics
    Volume: 5, P: 262-266

  • Understanding the electron and nuclear spin interactions is essential to the application of quantum information devices. Here the authors report a step-like electron Larmor frequency versus external magnetic field due to the discretization of the total magnetic field by the nuclear spin bath in ZnSe:F.

    • E. A. Zhukov
    • E. Kirstein
    • A. Greilich
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-8

  • Halide perovskites have a variety of attractive feature such as high quantum yield, and tunable optical properties, combined with easy fabrication. Here, Kirstein et al demonstrate spin-mode locking in CsPb(Cl0.56Br0.44)3 lead halide perovskite nanocrystals embedded in a fluorophosphate glass matrix, and a hole spin lifetime extending into the microsecond range.

    • E. Kirstein
    • N. E. Kopteva
    • A. Greilich
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-7

  • Conventional linear optical methods cannot probe within an inhomogeneously broadened ensemble of particles. Yang et al.demonstrate a spectroscopic technique based on fluctuation correlations that can reveal the underlying homogeneous linewidths of quantum dots in a low-power ensemble measurement.

    • Luyi Yang
    • P. Glasenapp
    • S. A. Crooker
    Research
    Nature Communications
    Volume: 5, P: 1-7

  • Researchers demonstrate fast, single-qubit gates using a sequence of 13 ps pulses. Two vertically stacked InAs/GaAs quantum dots were coupled through coherent tunnelling and charged with controlled numbers of holes. The interaction between hole spins was investigated by Ramsey fringe experiments, showing a tunable interaction range of tens of gigahertz.

    • Alex Greilich
    • Samuel G. Carter
    • Daniel Gammon
    Research
    Nature Photonics
    Volume: 5, P: 702-708

  • Semiconducting quantum dots are considered candidate materials for realizing spin-based quantum computation devices. This Review examines the main results obtained over the past decade concerning the so-called central spin problem, namely the interaction between a single electronic spin or hole with the surrounding nuclear environment.

    • E. A. Chekhovich
    • M. N. Makhonin
    • L. M. K. Vandersypen
    Reviews
    Nature Materials
    Volume: 12, P: 494-504

  • Atoms in a semiconductor can have non-zero nuclear spins, creating a large ensemble with many quantum degrees of freedom. An electron spin coupled to the nuclei of a semiconductor quantum dot can witness the creation of entanglement within the ensemble.

    • Dorian A. Gangloff
    • Leon Zaporski
    • Mete Atatüre
    Research
    Nature Physics
    Volume: 17, P: 1247-1253

  • Ideal qubits should exhibit, simultaneously, long spin coherence times and fast initialization. Here, defect centers in ZnSe epilayers, introduced by ex-situ fluorine implantation, are displaying spin coherence times of 100 ns at room temperature and fast optical access on the picosecond timescale.

    • Erik Kirstein
    • Evgeny A. Zhukov
    • Alex Greilich
    ResearchOpen Access
    Communications Materials
    Volume: 2, P: 1-8