Molecular prototypes for spin-based CNOT and SWAP quantum gates

Molecular prototypes for spin-based CNOT and SWAP quantum gates

We show that a chemically engineered structural asymmetry in [Tb2] molecular clusters renders the two weakly coupled Tb3+ spin qubits magnetically inequivalent. The magnetic energy level spectrum of these molecules meets then all conditions needed to realize a universal CNOT quantum gate. A proposal...

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Veröffentlicht in:Physical review letters 2011-09, Vol.107 (11), p.117203-117203, Article 117203
Hauptverfasser: Luis, F, Repollés, A, Martínez-Pérez, M J, Aguilà, D, Roubeau, O, Zueco, D, Alonso, P J, Evangelisti, M, Camón, A, Sesé, J, Barrios, L A, Aromí, G
Format: Artikel
Sprache:eng
Schlagworte:
Nanotechnology
Nanotecnologia
Ordinadors quàntics
Quantum computers
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Zusammenfassung:We show that a chemically engineered structural asymmetry in [Tb2] molecular clusters renders the two weakly coupled Tb3+ spin qubits magnetically inequivalent. The magnetic energy level spectrum of these molecules meets then all conditions needed to realize a universal CNOT quantum gate. A proposal to realize a SWAP gate within the same molecule is also discussed. Electronic paramagnetic resonance experiments confirm that CNOT and SWAP transitions are not forbidden.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.107.117203