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Arbitrary accuracy iterative phase estimation algorithm as a two qubit benchmark

Miroslav Dobsicek
(
- Goteborg, ITP and
- Prague, Inst. Computer Info. Sci.
)
,
Goran Johansson
(
- Goteborg, ITP
)
,
Vitaly Shumeiko
(
- Goteborg, ITP
)
,
Goran Wendin
(
- Goteborg, ITP
)

Oct, 2006

4 pages

Published in:

Phys.Rev.A 76 (2007) 030306

e-Print:

quant-ph/0610214 [quant-ph]

DOI:

10.1103/PhysRevA.76.030306

View in:

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reference search102 citations

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Abstract: (arXiv)

We discuss the implementation of an iterative quantum phase estimation algorithm, with a single ancillary qubit. We suggest using this algorithm as a benchmark for multi-qubit implementations. Furthermore we describe in detail the smallest possible realization, using only two qubits, and exemplify with a superconducting circuit. We discuss the robustness of the algorithm in the presence of gate errors, and show that 7 bits of precision is obtainable, even with very limited gate accuracies.

Note:

Improved error model. Dephasing is considered

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