Corpus ID: 118032827

Optimal Perfect Distinguishability between Unitaries and Quantum Operations

  title={Optimal Perfect Distinguishability between Unitaries and Quantum Operations},
  author={Cheng Lu and J. Chen and R. Duan},
  journal={arXiv: Quantum Physics},
We study optimal perfect distinguishability between a unitary and a general quantum operation. In 2-dimensional case we provide a simple sufficient and necessary condition for sequential perfect distinguishability and an analytical formula of optimal query time. We extend the sequential condition to general d-dimensional case. Meanwhile, we provide an upper bound and a lower bound for optimal sequential query time. In the process a new iterative method is given, the most notable innovation of… Expand
2 Citations


Perfect distinguishability of quantum operations.
Distinguishability, classical information of quantum operations
Distinguishing quantum operations having few Kraus operators
  • J. Watrous
  • Computer Science, Physics
  • Quantum Inf. Comput.
  • 2008
Statistical distinguishability between unitary operations.
  • A. Acín
  • Mathematics, Medicine
  • Physical review letters
  • 2001
Unambiguous discrimination among oracle operators
Entanglement is not necessary for perfect discrimination between unitary operations.
Quantum circuits with mixed states
Ancilla-assisted discrimination of quantum gates
Discriminating States: the quantum Chernoff bound.