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 | Nanotech 2003 Vol. 2
Technical Proceedings of the 2003 Nanotechnology Conference and Trade Show, Volume 2
Chapter 5: Quantum Effects, Quantum Devices and Spintronics |
| | Initial State Preparation and Stability in Narrow Band-Gap Semiconductor Qubits | | Authors: | M.J. Gilbert, R. Akis, D.K. Ferry | | Affilation: | Arizona State University, US | | Pages: | 198 - 201 | | Keywords: | quantum computing, qubits, stability, narrow band-gap semiconductors | | Abstract: | The output of a quantum computing system depends on the quality of the preparation of the initial state of the qubit or qubits to be used in the subsequent computations. Here, we have defined a qubit structure using a coupled waveguide system. To prepare the initial state of the qubit we set the coupling distance between the two waveguides to a point which corresponds to the desired electron density transfer between the input portion of the qubit and the output portion of the qubit [1]. To this end, it is advantageous to use narrow band-gap semiconductor materials for quantum computing applications due to their relatively long phase coherent times and high mobilites. However, while favorable parameters are attainable in narrow band-gap semiconductors, it is a valid to question the stability of the initial state under varying experimentally verified phase coherent times, inelastic scattering, and imprecise definition of the coupling region in InAs, GaAs, and InSb. |  | View paper | | ISBN: | 0-9728422-1-7 |
| Pages: | 600 |
| Hardcopy: | $125.00 |
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