Qubits

Qubits or quantum bits are the fundamental building block for quantum information processes. Whereas conventional computers store and process data as a series of ‘1’s and ‘0’s, quantum computers use the properties of a quantum system, such as the polarization of a photon or the spin of an electron.

Latest Research and Reviews

  • Research |

    Quantum-classical variational techniques are combined with a programmable analogue quantum simulator based on a one-dimensional array of up to 20 trapped calcium ions to simulate the ground state of the lattice Schwinger model.

    • C. Kokail
    • , C. Maier
    • , R. van Bijnen
    • , T. Brydges
    • , M. K. Joshi
    • , P. Jurcevic
    • , C. A. Muschik
    • , P. Silvi
    • , R. Blatt
    • , C. F. Roos
    •  & P. Zoller
    Nature 569, 355-360
  • Research |

    An array of superconducting qubits in an open one-dimensional waveguide is precisely controlled to create an artificial quantum cavity–atom system that reaches the strong-coupling regime without substantial decoherence.

    • Mohammad Mirhosseini
    • , Eunjong Kim
    • , Xueyue Zhang
    • , Alp Sipahigil
    • , Paul B. Dieterle
    • , Andrew J. Keller
    • , Ana Asenjo-Garcia
    • , Darrick E. Chang
    •  & Oskar Painter
    Nature, 1-6
  • Research |

    Gate reflectometry on an ancillary dot coupled to an electron reservoir is used to read the spin of a qubit in a CMOS device in a single shot with an average fidelity above 98% within 0.5 ms.

    • Matias Urdampilleta
    • , David J. Niegemann
    • , Emmanuel Chanrion
    • , Baptiste Jadot
    • , Cameron Spence
    • , Pierre-André Mortemousque
    • , Christopher Bäuerle
    • , Louis Hutin
    • , Benoit Bertrand
    • , Sylvain Barraud
    • , Romain Maurand
    • , Marc Sanquer
    • , Xavier Jehl
    • , Silvano De Franceschi
    • , Maud Vinet
    •  & Tristan Meunier
  • Research |

    Two-qubit logic gates in a silicon-based system are shown (using randomized benchmarking) to have high gate fidelities of operation and are used to generate Bell states, a step towards solid-state quantum computation.

    • W. Huang
    • , C. H. Yang
    • , K. W. Chan
    • , T. Tanttu
    • , B. Hensen
    • , R. C. C. Leon
    • , M. A. Fogarty
    • , J. C. C. Hwang
    • , F. E. Hudson
    • , K. M. Itoh
    • , A. Morello
    • , A. Laucht
    •  & A. S. Dzurak
    Nature 569, 532-536

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