Time Optimal Unitary Operations

Authors:
  • ACAlberto Carlini
    Alberto Carlini
  • AHAkio Hosoya
    Akio Hosoya
  • TKTatsuhiko Koike
    Tatsuhiko Koike
  • YOYosuke Okudaira
    Yosuke Okudaira
Preprint
Publisher website
Google Scholar
Abstract
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.