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Journal Articles Nature Physics Year : 2007

Two-dimensional transport and transfer of a single atomic qubit in optical tweezers

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Abstract

Quantum computers have the capability of out-performing their classical counterparts for certain computational problems. Several scalable quantum-computing architectures have been proposed. An attractive architecture is a large set of physically independent qubits arranged in three spatial regions where (1) the initialized qubits are stored in a register, (2) two qubits are brought together to realize a gate and (3) the readout of the qubits is carried out. For a neutral-atom-based architecture, a natural way to connect these regions is to use optical tweezers to move qubits within the system. In this letter we demonstrate the coherent transport of a qubit, encoded on an atom trapped in a submicrometre tweezer, over a distance typical of the separation between atoms in an array of optical traps. Furthermore, we transfer a qubit between two tweezers, and show that this manipulation also preserves the coherence of the qubit.
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Dates and versions

hal-00509079 , version 1 (14-01-2015)

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Jérôme Beugnon, Charles Tuchendler, Harold Marion, Alpha Gaëtan, Yevhen Miroshnychenko, et al.. Two-dimensional transport and transfer of a single atomic qubit in optical tweezers. Nature Physics, 2007, 3, pp.696. ⟨10.1038/nphys698⟩. ⟨hal-00509079⟩
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