Implementing universal multiqubit quantum logic gates in three- and four-spin systems at room temperature - art. no. 042302

Citation
Jf. Du et al., Implementing universal multiqubit quantum logic gates in three- and four-spin systems at room temperature - art. no. 042302, PHYS REV A, 6304(4), 2001, pp. 2302
Citations number
35
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
1050-2947 → ACNP
Volume
6304
Issue
4
Year of publication
2001
Database
ISI
SICI code
1050-2947(200104)6304:4<2302:IUMQLG>2.0.ZU;2-N
Abstract
In this paper, we present the experimental realization of multiqubit gates Lambda (n)(NOT) in macroscopic ensemble of three-qubit and four-qubit molec ules. Instead of depending heavily on the two-bit universal gate, which ser ved as the basic quantum operation in quantum computing, we use pulses of w ell-defined frequency and length that simultaneously apply to all qubits in a quantum register. It appears that this method is experimentally convenie nt when this procedure is extended to more qubits on some quantum computati on, and it can also be used in other physical systems.