Effect of noise on geometric logic gates for quantum computation

Details Effect of noise on geometric logic gates for quantum computation Effect of noise on geometric logic gates for quantum computation

2001-05-02

arxiv.org/abs/quant-ph/0105006v3

Phys. Rev. A 67, 012308 (2003)

Physics

Quantum Physics

8 pages, 4 figures; published version

Scientific paper

10.1103/PhysRevA.67.012308

We introduce the non-adiabatic, or Aharonov-Anandan, geometric phase as a tool for quantum computation and show how it could be implemented with superconducting charge qubits. While it may circumvent many of the drawbacks related to the adiabatic (Berry) version of geometric gates, we show that the effect of fluctuations of the control parameters on non-adiabatic phase gates is more severe than for the standard dynamic gates. Similarly, fluctuations also affect to a greater extent quantum gates that use the Berry phase instead of the dynamic phase.

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