Quantum logic atomic ions

SLI is not specific to molecular eigenstates, but universal to the superposition of any eigenstates in a variety of quantum systems. It is thus expected as a new tool for quantum logic gates not only in MEIP but also for other systems such as atoms, ions, and quantum dots. SLI also provides a new method to manipulate WPs with fs laser pulses in general applications of coherent control. 

Here, we rq>ort related trapped-ion research at NIST on (1) the study of the dynamics of a two-level atomic system coupled to harmonic atomic motion, (2) the creation and characterization of nonclassical states of motion such as Schrodinger-cat superposition states, and (3) quantum logic for the generation of highly entangled states and for the investigation of scaling in a quantum computer. 

We conclude by discussing a possible application of quantum logic in the realm of atomic physics. This application has the advantage of being useful with a relatively small number of ions and logic operations. 

In the following I will discuss current efforts to realize quantum logic gates and QCs. The atomic qubit realization as described in Sect. 6.2.1 seems to be the most promising concept at present. Three possible realizations of quantum logic gates with atomic qubits are discussed. The main focus will be on the ion trap proposal in Sect. 6.4. All proposals discussed below proposals have in common that experiments to to realize them are currently under way. 

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