Quantum computing with spatially delocalized qubits
Mompart Penina, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Eckert, Kai (University of Hannover. Institute of Theoretical Physics)
Ertmer, W. (University of Hannover. Institute of Quantum Optics)
Birkl, Gerhard (University of Hannover. Institute of Quantum Optics)
Lewenstein, Maciej (University of Hannover. Institute of Theoretical Physics)
American Physical Society

Data:	2003
Resum:	We analyze the operation of quantum gates for neutral atoms with qubits that are delocalized in space, i. e. , the computational basis states are defined by the presence of a neutral atom in the ground state of one out of two trapping potentials. The implementation of single-qubit gates as well as a controlled phase gate between two qubits is discussed and explicit calculations are presented for rubidium atoms in optical microtraps. Furthermore, we show how multiqubit highly entangled states can be created in this scheme.
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; Versió publicada
Publicat a:	Physical review letters, Vol. 90, Issue 14 (April 2003) , p. 147901, ISSN 1079-7114

DOI: 10.1103/PhysRevLett.90.147901

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