Quantum state discrimination
By Stephen M. Barnett, Sarah Croke. 2008
563 citations recorded by the source corpus.
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 been performed to realize these.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/bffa8d15e65e4674f85c2348c4156918bc5cfa3f
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Artificial Intelligence
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Introduction to decoherence theory (2006, background): “However, generalized measurements schemes may also perform tasks which are seemingly impossible with a projective measurement, such as the error-free discrimination of two nonorthogonal states [12, 13].”
- Evidence for the epistemic view of quantum states: A toy theory (2004, unknown): “The main features of state discrimination tasks in quantum theory [52] are also reproduced in the toy theory.”
- Advances in quantum cryptography (2019, unknown): “As already mentioned, an efficient computation of the quantum fidelity is crucial for solving problems of quantum state discrimination [91, 92, 601], where two multi-mode Gaussian states must be optimally distinguished.”
- The Mathematical Language of Quantum Theory: From Uncertainty to Entanglement (2012, unknown): “We refer to [42] and [21] for reviews of various state-discrimination strategies.”