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Showing 1–50 of 818 results
Advanced filters: Author: K. D. Hahn Clear advanced filters
  • Hole spin qubits in germanium have seen significant advancements, though improving control and noise resilience remains a key challenge. Here, the authors realize a dressed singlet-triplet qubit in germanium, achieving frequency-modulated high-fidelity control and a tenfold increase in coherence time.

    • K. Tsoukalas
    • U. von Lüpke
    • P. Harvey-Collard
    ResearchOpen Access
    Nature Communications
    Volume: 17, P: 1-8
  • An 11-qubit atom processor comprising two precision-placed nuclear spin registers of phosphorus in silicon is shown to achieve state-of-the-art Bell-state fidelities of up to 99.5%.

    • Hermann Edlbauer
    • Junliang Wang
    • Michelle Y. Simmons
    ResearchOpen Access
    Nature
    Volume: 648, P: 569-575
  • The coherence times of nitrogen-vacancy centres are key factors influencing their performance in quantum applications. Here the authors show that synthesising phosphorus-doped diamond yields nitrogen-vacancy centres with significantly improved \(T_2^ \ast\) and T2.

    • E. D. Herbschleb
    • H. Kato
    • N. Mizuochi
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-6
  • Conveyor-mode spin shuttling using a two-tone travelling-wave potential demonstrates an order of magnitude better spin coherence than bucket-brigade shuttling, achieving spin shuttling over 10 μm in under 200 ns with 99.5% fidelity in an isotopically purified Si/SiGe heterostructure.

    • Maxim De Smet
    • Yuta Matsumoto
    • Lieven M. K. Vandersypen
    ResearchOpen Access
    Nature Nanotechnology
    Volume: 20, P: 866-872
  • Superconducting qubits are highly sensitive to magnetic fields, limiting their integration with spin-based quantum systems. Here, the authors demonstrate a superconducting qubit that maintains coherence beyond 1T, revealing spin-1/2 impurities and magnetic freezing of flux noise.

    • S. Günzler
    • J. Beck
    • I. M. Pop
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-7
  • Trapped ions are promising for electrometry but limited by their weak intrinsic spin coupling to electric fields. Now it is shown that using a magnetic field gradient enhances sensitivity and enables precise measurements across subhertz to kilohertz frequencies.

    • F. Bonus
    • C. Knapp
    • W. K. Hensinger
    ResearchOpen Access
    Nature Physics
    Volume: 21, P: 1189-1195
  • Quantum dot spin qubits in Si can be controlled using micromagnet-based electric-dipole spin resonance, but experiments have been limited to small 1D arrays. Here the authors address qubit control in 2D Si arrays, demonstrating low-frequency control of qubits in a 2 x 2 array using hopping gates.

    • Florian K. Unseld
    • Brennan Undseth
    • Lieven M. K. Vandersypen
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-12
  • Identifying jets originating from heavy quarks plays a fundamental role in hadronic collider experiments. In this work, the ATLAS Collaboration describes and tests a transformer-based neural network architecture for jet flavour tagging based on low-level input and physics-inspired constraints.

    • G. Aad
    • E. Aakvaag
    • L. Zwalinski
    ResearchOpen Access
    Nature Communications
    Volume: 17, P: 1-22
  • Plant traits drive ecosystem dynamics yet are challenging to map globally due to sparse measurements. Here, the authors combine crowdsourced biodiversity observations with Earth observation data to accurately map 31 plant traits at 1 km2 resolution.

    • Daniel Lusk
    • Sophie Wolf
    • Teja Kattenborn
    ResearchOpen Access
    Nature Communications
    Volume: 17, P: 1-17
  • A scalable silicon quantum processor unit cell made of two qubits confined to quantum dots operates at about 1.5 K, achieving 98.6% single-qubit gate fidelities and a 2 μs coherence time.

    • C. H. Yang
    • R. C. C. Leon
    • A. S. Dzurak
    Research
    Nature
    Volume: 580, P: 350-354
  • Encasing a single atom within a fullerene (C60) cage can create a robustly packaged single atomic spin system. Here, the authors perform electron paramagnetic resonance on a single encased spin using a diamond NV-center, demonstrating the first steps in controlling single spins in fullerene cages.

    • Dinesh Pinto
    • Domenico Paone
    • Klaus Kern
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-6
  • Quantum teleportation moves the quantum state of a system between physical locations without losing its coherence, an essential criterion for emerging quantum information applications. Now, electron-spin-state teleportation in covalent organic electron donor–acceptor–stable radical molecules is demonstrated using entangled electron spins produced by photo-induced electron transfer.

    • Brandon K. Rugg
    • Matthew D. Krzyaniak
    • Michael R. Wasielewski
    Research
    Nature Chemistry
    Volume: 11, P: 981-986
  • HIV maturation inhibitors such as bevirimat (BVM) interfering with Gag processing are emerging as alternative anti-retroviral drug candidates. Here, the authors report structures of assemblies of HIV-1 Gag fragments spanning the CA C-terminal domain and SP1 region bound to BVM.

    • Sucharita Sarkar
    • Kaneil K. Zadrozny
    • Tatyana Polenova
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-13
  • The CMS Collaboration reports the measurement of the spin, parity, and charge conjugation properties of all-charm tetraquarks, exotic fleeting particles formed in proton–proton collisions at the Large Hadron Collider.

    • A. Hayrapetyan
    • V. Makarenko
    • A. Snigirev
    ResearchOpen Access
    Nature
    Volume: 648, P: 58-63
  • The authors fabricate a fluxonium circuit using a granular aluminium nanoconstriction to replace the conventional superconductor–insulator–superconductor tunnel junction. Their characterization suggests that this approach will be a useful element in the superconducting qubit toolkit.

    • D. Rieger
    • S. Günzler
    • I. M. Pop
    Research
    Nature Materials
    Volume: 22, P: 194-199
  • Carbon nanotubes are promising hosts for spin qubits, however existing demonstrations show limited coherence times. Here the authors report quantum states in a carbon-nanotube-based circuit driven solely by cavity photons and exhibiting a coherence time of about 1.3 μs.

    • B. Neukelmance
    • B. Hue
    • M. R. Delbecq
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-7
  • Ionizing radiation can cause simultaneous charge noise in multi-qubit superconducting devices. Here, the authors measure space- and time-correlated charge jumps in a four-qubit system in a low-radiation underground facility, achieving operation with minimal correlated events over 22 h at qubit separations beyond 3 mm.

    • G. Bratrud
    • S. Lewis
    • D. Bowring
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-5
  • For solid-state qubits, the material environment hosts sources of errors that vary in time and space. This systematic analysis of errors affecting high-fidelity two-qubit gates in silicon can inform the design of large-scale quantum computers.

    • Tuomo Tanttu
    • Wee Han Lim
    • Andrew S. Dzurak
    ResearchOpen Access
    Nature Physics
    Volume: 20, P: 1804-1809
  • Using a cryogenic 300-mm wafer prober, a new approach for the testing of hundreds of industry-manufactured spin qubit devices at 1.6 K provides high-volume data on performance, allowing optimization of the complementary metal–oxide–semiconductor (CMOS)-compatible fabrication process.

    • Samuel Neyens
    • Otto K. Zietz
    • James S. Clarke
    ResearchOpen Access
    Nature
    Volume: 629, P: 80-85
  • The coherent manipulation of an individual electron spin qubit bound to a single phosphorus donor atom in natural silicon provides an excellent platform on which to build a scalable quantum computer.

    • Jarryd J. Pla
    • Kuan Y. Tan
    • Andrea Morello
    Research
    Nature
    Volume: 489, P: 541-545
  • Nuclear spins in gallium arsenide produce noise at discrete frequencies, which can be notch-filtered efficiently to extend coherence times of electron spin qubits to nearly 1 ms.

    • Filip K. Malinowski
    • Frederico Martins
    • Ferdinand Kuemmeth
    Research
    Nature Nanotechnology
    Volume: 12, P: 16-20
  • The trade-off between long lifetime and inevitable radiative decay to a control line has become a key limitation for superconducting qubits. Here, the authors break the trade-off by coupling another qubit to the control line of the first one to suppress its relaxation, while enabling fast qubit control.

    • S. Kono
    • K. Koshino
    • Y. Nakamura
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-6
  • CMOS-based circuits can be integrated with silicon-based spin qubits and can be controlled at milli-kelvin temperatures, which can potentially help scale up these systems.

    • Samuel K. Bartee
    • Will Gilbert
    • David J. Reilly
    ResearchOpen Access
    Nature
    Volume: 643, P: 382-387
  • The quark structure of the f0(980) hadron is still unknown after 50 years of its discovery. Here, the CMS Collaboration reports a measurement of the elliptic flow of the f0(980) state in proton-lead collisions at a nucleon-nucleon centre-of-mass energy of 8.16 TeV, providing strong evidence that the state is an ordinary meson.

    • A. Hayrapetyan
    • A. Tumasyan
    • A. Zhokin
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-19
  • When performing interferometry-based magnetometry, there is generally a trade-off between sensitivity and range. Here, instead, the authors demonstrate a geometric-phase-based protocol which allows a 400-fold enhancement in static magnetic field range with a single NV-centre without reducing sensitivity.

    • K. Arai
    • J. Lee
    • R. L. Walsworth
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-7
  • LRFN2 in cone photoreceptors is vital for building the OFF pathway. Here authors report this cell-adhesion molecule stabilizes contacts with OFF bipolar cells, clusters their ionotropic receptors, and is required for negative-contrast vision and predator-detection behaviors.

    • Florentina Soto
    • Chin-I Lin
    • Daniel Kerschensteiner
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-14
  • Microglial states throughout remyelination are incompletely understood. Here, the authors show that microglia form several states during the early stages of remyelination that coalesce into a partially resolved state that is dysregulated with age.

    • Sameera Zia
    • Marianela E. Traetta
    • Jason R. Plemel
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-24
  • Superconducting transmon qubits have been fabricated in a 300 mm complementary metal–oxide–semiconductor (CMOS) pilot line using industrial fabrication methods, achieving relaxation and coherence times exceeding 100 μs.

    • J. Van Damme
    • S. Massar
    • K. De Greve
    ResearchOpen Access
    Nature
    Volume: 634, P: 74-79
  • Replicative errors contribute to genetic diversity needed for evolution but in high frequency lead to genomic stability. Here, NMR is used to show via a kinetic model that DNA dynamics can determine the misincorporation of A•G and A•8OG mismatches.

    • Stephanie Gu
    • Eric S. Szymanski
    • Hashim M. Al-Hashimi
    Research
    Nature Chemical Biology
    Volume: 19, P: 900-910
  • The efficiency of running quantum algorithms can be improved by expanding the hardware operations that a quantum computer can perform. A high-fidelity three-qubit iToffoli gate has now been demonstrated using superconducting qubits.

    • Yosep Kim
    • Alexis Morvan
    • Irfan Siddiqi
    Research
    Nature Physics
    Volume: 18, P: 783-788
  • Rare-earth-doped crystals are prime candidates for qubit storage that could be easily interfaced with photonic systems. Towards this end, Siyushev et al.show the initialization, coherent manipulation and readout of single-electron spins on cerium ions embedded in YAG crystals.

    • P. Siyushev
    • K. Xia
    • J. Wrachtrup
    Research
    Nature Communications
    Volume: 5, P: 1-6
  • The electron spin in a silicon-based quantum dot can be controlled electrically for as long as several tens of microseconds, which improves the prospects for quantum information processing based on this type of quantum dot.

    • E. Kawakami
    • P. Scarlino
    • L. M. K. Vandersypen
    Research
    Nature Nanotechnology
    Volume: 9, P: 666-670
  • Viscous Dirac fluid flow in room-temperature graphene is imaged using quantum diamond magnetometry, revealing a parabolic Poiseuille profile for electron flow in a high-mobility graphene channel near the charge-neutrality point.

    • Mark J. H. Ku
    • Tony X. Zhou
    • Ronald L. Walsworth
    Research
    Nature
    Volume: 583, P: 537-541