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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We discuss the concept of connection states (or connection matrices) thatdescribe posterior ensembles, post-selected according to the outcomes of aquantum measurement. Connection matrices allow one to obtain results of anyweak and some non-weak pre- and post-selected measurements, in the same manneras density matrices allow one to predict the results of conventional quantummeasurements. Connection matrices are direct extensions of the density matricesand are generally non-Hermitian, which we show to be a direct consequence ofquantum complementarity. This implies that the ultimate reason for unusual weakvalues is quantum complementarity. We show that connection matrices can bedetermined experimentally. We also show that retrodictive states are a specialcase of connection states. We propose a new method of tomography of quantumdetectors.

Connection-state approach to pre- and post-selected quantum measurements