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Fast Quantum Computing with Buckyballs | | Maria Silvia Garelli
; Feodor V Kusmartsev
; | | Date: |
18 Jul 2005 | | Subject: | quant-ph | | Abstract: | We have found that encapsulated atoms in fullerene molecules, which carry a spin, can be used for fast quantum computing. We describe the scheme for performing quantum computations, going through the preparation of the qubit state and the realization of a two-qubit quantum gate. When we apply a static magnetic field to each encased spin, we find out the ideal design for the preparation of the quantum state. Therefore, adding to our system a time dependent magnetic field, we can perform a phase-gate. The operational time related to a $pi-$phase gate is of the order of $ns$. This finding shows that, during the decoherence time, which is proportional to $mu s$, we can perform many thousands of gate operations. In addition, the two-qubit state which arises after a $pi-$gate is characterized by a high degree of entanglement. This opens a new avenue for the implementation of fast quantum computation. | | Source: | arXiv, quant-ph/0507169 | | Services: | Forum | Review | PDF | Favorites | |
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