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Artificial molecular nanomagnets as spin-based quantum logic gates

AuthorsLuis, Fernando; Roubeau, Olivier; Aromí, Guillem
Issue Date2013
CitationArchitecture and Design of Molecule Logic Gates and Atom Circuits: 249-266 (2013)
SeriesAdvances in Atom and Single Molecule Machines
AbstractQuantum coherence and entanglement give resources to enhance the capabilities of computers well beyond those achievable by present-day or even future classical devices. Quantum information processing can be carried out via a combination of two elementary logic operations: unitary rotations of individual qubits and quantum-gate operations that involve at least two coupled qubits. An outstanding challenge for science and technology is to find suitable realizations of these basic elements. In recent years, magnetic molecular clusters have become candidates to implement the quantum computer hardware. Here, we summarize some of the strategies that have been followed to design and synthesize molecular spin qubits and quantum gates. In particular, we show that molecular clusters containing two Tb3+ ions meet all ingredients required to implement a CNOT quantum logic gate. The definition of control and target qubits is based on the strong magnetic anisotropy and the magnetic inequivalence of the two ions, which can be achieved by chemically engineering dissimilar coordination spheres. The magnetic asymmetry also provides a method to realize a SWAP gate in the same cluster. The synthesis of related molecular structures enables a vast choice of quantum-gate designs. Chemically engineered molecular quantum gates can therefore open promising avenues for the realization of scalable quantum computing architectures.
DescriptionProceedings of the 2nd AtMol European Workshop.
Publisher version (URL)http://dx.doi.org/10.1007/978-3-642-33137-4_19
Appears in Collections:(ICMA) Libros y partes de libros
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