# Quantum state discrimination

@article{Barnett2008QuantumSD, title={Quantum state discrimination}, author={S. Barnett and S. Croke}, journal={Advances in Optics and Photonics}, year={2008}, volume={1}, pages={238-278} }

It is a fundamental consequence of the superposition principle for quantum states that there must exist nonorthogonal states, that is, states that, although different, have a nonzero overlap. This finite overlap means that there is no way of determining with certainty in which of two such states a given physical system has been prepared. We review the various strategies that have been devised to discriminate optimally between nonorthogonal states and some of the optical experiments that have… Expand

#### Figures from this paper

#### 242 Citations

PT-symmetric quantum state discrimination

- Physics, Medicine
- Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
- 2013

Preserving Measurements for Optimal State Discrimination over Quantum Channels.

- Physics, Mathematics
- 2018

#### References

SHOWING 1-10 OF 189 REFERENCES

Optical realization of optimal unambiguous discrimination for pure and mixed quantum states.

- Physics, Medicine
- Physical review letters
- 2004