
Holonomic quantum computation is analyzed from geometrical viewpoint. We develop an optimization scheme in which an arbitrary unitary gate is implemented with a small circle in a complex projective space. Exact solutions for the Hadamard, CNOT and 2-qubit discrete Fourier transform gates are explicitly constructed.
11 pages, re-organized to be more comprehensive, references added, style file of Physics Letters A is needed
quantum computer, Quantum Physics, Quantum computation, small circle, FOS: Physical sciences, holonomy, Quantum Physics (quant-ph), control theory, unitary gate, isoholonomic problem
quantum computer, Quantum Physics, Quantum computation, small circle, FOS: Physical sciences, holonomy, Quantum Physics (quant-ph), control theory, unitary gate, isoholonomic problem
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