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Abobeih, M.H.M.A. (author), Cramer, J. (author), Bakker, M.V. (author), Kalb, N. (author), Markham, M. (author), Twitchen, D. J. (author), Taminiau, T.H. (author)Single electron spins coupled to multiple nuclear spins provide promising multi-qubit registers for quantum sensing and quantum networks. The obtainable level of control is determined by how well the electron spin can be selectively coupled to, and decoupled from, the surrounding nuclear spins. Here we realize a coherence time exceeding a...journal article 2018
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Kalb, N. (author), Cramer, J. (author), Twitchen, D. J. (author), Markham, M. (author), Hanson, R. (author), Taminiau, T.H. (author)Repeated observations inhibit the coherent evolution of quantum states through the quantum Zeno effect. In multi-qubit systems this effect provides opportunities to control complex quantum states. Here, we experimentally demonstrate that repeatedly projecting joint observables of multiple spins creates quantum Zeno subspaces and...journal article 2016
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Cramer, J. (author), Kalb, N. (author), Rol, M.A. (author), Hensen, B.J. (author), Blok, M.S. (author), Markham, M. (author), Twitchen, D. J. (author), Hanson, R. (author), Taminiau, T.H. (author)Reliable quantum information processing in the face of errors is a major fundamental and technological challenge. Quantum error correction protects quantum states by encoding a logical quantum bit (qubit) in multiple physical qubits. To be compatible with universal fault-tolerant computations, it is essential that states remain encoded at all...journal article 2016