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  1. NSLS-II Friday Lunchtime Seminar

    "Quantum Computing on crystalline beams of ions: the concept and proof-of-principle experiments"

    Presented by Timur Shaftan, NSLS-II

    Friday, September 27, 2019, 12 pm
    NSLS-II Bldg. 743 Room 156

    Hosted by: Ignace Jarrige

    One of the promising directions in Quantum Computers (QC) is based on using ion traps. In a modern QC, several tens of ions are collected in an electromagnetic trap of a cm in size, with their motion cooled down to micro K temperature level, leading to entanglement of their quantum states, controlled by laser and RF fields. These ions = qubits then used to run quantum computations at unprecedent rate using specialized codes (check, for example, QuTip, Quantum Toolbox in Python). I will discuss a concept of a QC, which holds a promise to support 105 of qubits in contrast to the state-of-the-art devices. The idea is to use crystalline beams of ions in an accelerator as the medium for qubits. The crystalline beams were demonstrated in storage rings in 1980s when many protons, being cooled with electron beam formed a revolving ring with crystalline-like structure inside. Marrying this concept with that of the QC on a conventional ion trap, one might consider expansion of the QC to a large particle accelerator with high qubit capacity. The latter is important for expansion of QC capabilities, including the processing power and robustness against errors due to decoherence. In this presentation I will go over the concept and my analysis of a few challenges that require proof-of-principal experiments so that the some basic aspects of this interesting concept are validated.

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