English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the discrimination of weak coherent states of light with significantoverlaps by nondestructive measurements on the light states through measuringatomic states that are entangled to the coherent states via dipole coupling. Inthis way, the problem of measuring and discriminating coherent light states isshifted to finding the appropriate atom-light interaction and atomicmeasurements. We show that this scheme allows us to attain a probability oferror extremely close to the Helstrom bound, the ultimate quantum limit fordiscriminating binary quantum states, through the simple Jaynes-Cummingsinteraction between the field and ancilla with optimized light-atom couplingand projective measurements on the atomic states. Moreover, since themeasurement is nondestructive on the light state, information that is notdetected by one measurement can be extracted from the post-measurement lightstates through subsequent measurements.

Near optimal discrimination of binary coherent signals via atom-light interaction