Abstract
In this chapter we will examine the possibility of utilizing molecular magnets for quantum information processing purposes. We start by giving a brief introduction into quantum computing, and highlight the fundamental differences between classical- and quantum computing. We will introduce the five DiVincenzo criteria for successful physical implementation of a quantum computer, and will use these criteria as a guideline for the remainder of the chapter. We will discuss how one can utilize the spin degrees of freedom in molecular magnets for quantum computation, and introduce the associated ways of controlling the state of the qubit. In this part we will focus mainly on the spin-electric effect, which makes it possible to control the quantum states of spin in molecular magnets by electric means. We will discuss ways to couple the quantum state of two molecular magnets. Next, we will identify and discuss the different decoherence mechanisms that play a role in molecular magnets. We will show that one of the advantages of using molecular magnets as qubits is that it is possible to use degrees of freedom that are more robust against decoherence than those in more traditional qubits. We briefly discuss preparation and read-out of qubit states. Finally, we discuss a proposal to implement Grover’s algorithm using molecular magnets.
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Acknowledgements
The authors would like to acknowledge financial support from the Swiss NSF, the NCCR Nanoscience Basel, and the FP7-ICT project “ELFOS”.
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van Hoogdalem, K., Stepanenko, D., Loss, D. (2014). Molecular Magnets for Quantum Information Processing. In: Bartolomé, J., Luis, F., Fernández, J. (eds) Molecular Magnets. NanoScience and Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40609-6_11
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DOI: https://doi.org/10.1007/978-3-642-40609-6_11
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