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Showing 1–7 of 7 results
Advanced filters: Author: Gopalakrishnan Balasubramanian Clear advanced filters

  • Quantum gates based on geometric phase shifts offer a promising approach for the realization of fault-tolerant quantum computing. Using nitrogen-vacancy centre qubits in diamond, this study experimentally realises a high-fidelty, non-adiabatic, non-Abelian holonomic single-qubit gate at room temperature.

    • Silvia Arroyo-Camejo
    • Andrii Lazariev
    • Gopalakrishnan Balasubramanian
    ResearchOpen Access
    Nature Communications
    Volume: 5, P: 1-5

  • The nitrogen-vacancy (NV) centre, a naturally occurring impurity in diamond crystals, has a unique, long-lived single-electron spin state that can be controlled and detected optically. This paper demonstrates the first steps towards a sensitive, high-resolution imaging technique in which these diamond spins are exploited. It is shown that the location of single NV spins can be determined with nanometre scale resolution, at ambient conditions, using magneto-optical spin detection.

    • Gopalakrishnan Balasubramanian
    • I. Y. Chan
    • Jörg Wrachtrup
    Research
    Nature
    Volume: 455, P: 648-651

  • The synthesis of highly pure diamond nanocrystals with a very small amount of paramagnetic impurities allows the observation of electron spin-dephasing times of up to 1.8 ms, a record for solid-state materials. The result could have important implications for quantum information processing methods based on diamond.

    • Gopalakrishnan Balasubramanian
    • Philipp Neumann
    • Jörg Wrachtrup
    Research
    Nature Materials
    Volume: 8, P: 383-387

  • An experiment demonstrates that single surface plasmons—collective electronic excitations on metal surfaces—show wave–particle duality. The result suggests that a macroscopic number of electrons can behave like a single quantum particle.

    • Roman Kolesov
    • Bernhard Grotz
    • Jörg Wrachtrup
    Research
    Nature Physics
    Volume: 5, P: 470-474