Spin-Based Quantum Computers made by Chemistry: Hows and Whys

Abstract

This introductory review discusses the main problems facing the attempt to build quantum information processing systems (like quantum computers) from spin-based qubits. We emphasize 'bottom-up' attempts using methods from chemistry. The essentials of quantum computing are explained, along with a description of the qubits and their interactions in terms of physical spin qubits. The main problem to be overcome is decoherence - how this works is described, along with ways to suppress contributions from spin bath and oscillator bath environments, and from dipolar interactions. Finally we discuss various strategies for making chemistry-based spin qubits, using both magnetic molecules and magnetic ions.

13 pages, 10 figures

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Cited by in corpus (19)

• Quantum entanglement in condensed matter systems
• Molecular prototypes for spin-based CNOT quantum gates
• Single-molecule Nanomagnets
• Franck-Condon Blockade in a Single-Molecule Transistor
• Coupling single molecule magnets to quantum circuits
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• The role of the quadrupolar interaction in the tunneling dynamics of lanthanide molecular magnets
• Introduction of spin centers in single crystals of Ba${}_2$CaWO${}_{6-\delta }$
• Decoherence measurements in crystals of molecular magnets
• Coupled activity-current fluctuations in open quantum systems under strong symmetries
• Electrical two-qubit gates within a pair of clock-qubit magnetic molecules
• Magnetic and structural studies of G-phase compound Mn${}_6$Ni${}_{16}$Si${}_7$
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• Pure Phase Decoherence in a Ring Geometry
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