STABILITY OF THE QUANTUM FOURIER TRANSFORMATION ON THE ISING QUANTUM COMPUTER
2005 ◽
Vol 03
(03)
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pp. 441-462
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Keyword(s):
We analyze the influence of errors on the implementation of the quantum Fourier transformation. Two kinds of errors are studied: (i) systematic errors due to off-resonant transitions and (ii) errors due to an external perturbation. The scaling of errors with system parameters and the number of qubits is analyzed. To suppress off-resonant transitions, we use correcting pulses while in order to suppress errors due to an external perturbation, we use an improved quantum Fourier transformation algorithm. As a result, the fidelity of quantum computation is increased by several orders of magnitude and is thus stable in a much wider range of physical parameters.
Keyword(s):
2009 ◽
Vol 07
(06)
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pp. 1053-1203
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Keyword(s):
2007 ◽
Vol 05
(01n02)
◽
pp. 223-228
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2005 ◽
Vol 77
(2)
◽
pp. 201-222
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