Abstract
We give a simple proof of a formula for the minimal time required to simulate a two-qubit unitary operation using a fixed two-qubit Hamiltonian together with fast local unitaries. We also note that a related lower bound holds for arbitrary n-qubit gates.
- Received 4 August 2003
DOI:https://doi.org/10.1103/PhysRevA.68.052311
©2003 American Physical Society