Two-dimensional transport and transfer of a single atomic qubit in optical tweezers
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 w...
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Veröffentlicht in: | Nature physics 2007-10, Vol.3 (10), p.696-699 |
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Sprache: | eng |
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Zusammenfassung: | 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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ISSN: | 1745-2473 1745-2481 1476-4636 |
DOI: | 10.1038/nphys698 |