Time Optimal Unitary Operations

Details Time Optimal Unitary Operations Time Optimal Unitary Operations

2006-08-04

arxiv.org/abs/quant-ph/0608039v4

Phys. Rev. A 75, 042308 (2007)

Physics

Quantum Physics

4 pages, 1 figure. References added

Scientific paper

10.1103/PhysRevA.75.042308

Extending our previous work on time optimal quantum state evolution, we
formulate a variational principle for the time optimal unitary operation, which
has direct relevance to quantum computation. We demonstrate our method with
three examples, i.e. the swap of qubits, the quantum Fourier transform and the
entangler gate, by choosing a two-qubit anisotropic Heisenberg model.

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