Realization of Universal Ion-Trap Quantum Computation with Decoherence-Free Qubits

Journal Article · Fri Nov 13 00:00:00 EST 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.200503· OSTI ID:21370823

Monz, T; Kim, K; Schindler, P; Chwalla, M; Riebe, M; Haensel, W; Hennrich, M ^[1]; Villar, A S; Blatt, R ^[1]; Roos, C F; Haeffner, H ^[2]

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1. Institut fuer Experimentalphysik, Universitaet Innsbruck, Technikerstr. 25, A-6020 Innsbruck (Austria)
2. Institut fuer Quantenoptik und Quanteninformation, Oesterreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck (Austria)

Any residual coupling of a quantum computer to the environment results in computational errors. Encoding quantum information in a so-called decoherence-free subspace provides means to avoid these errors. Despite tremendous progress in employing this technique to extend memory storage times by orders of magnitude, computation within such subspaces has been scarce. Here, we demonstrate the realization of a universal set of quantum gates acting on decoherence-free ion qubits. We combine these gates to realize the first controlled-NOT gate towards a decoherence-free, scalable quantum computer.

• OSTI ID: 21370823
• Journal Information: Physical Review Letters, Vol. 103, Issue 20; Other Information: DOI: 10.1103/PhysRevLett.103.200503; (c) 2009 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
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QUANTUM COMPUTERS
QUANTUM MECHANICS
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TRAPS
COMPUTERS
INFORMATION
MECHANICS
QUANTUM INFORMATION