Abstract
Photonic qubit logic provides flexible, low noise scheme for quantum information processing. However, implementation of increasing scale requires numbers of resources beyond what is readily available. A recent demonstration [1] has shown how to add a control operation to existing unitary transformations, providing a practical method for moving to medium-scale quantum circuits. Here we use the entanglement-based version of this scheme to implement a complex quantum gate — the Fredkin, or 3-qubit swap gate — with significantly less resources than its decomposition into a 2-qubit gate array.
© 2013 IEEE
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