## Causality: relaxing before exploring

This is a Perspective on "Causal hierarchy of multipartite Bell nonlocality" by Rafael Chaves, Daniel Cavalcanti, and Leandro Aolita, published in Quantum 1, 23 (2017). Quantum Views 1, 3 (2017).https://doi.org/10.22331/qv-2017-08-04-3By …

## Why the Quantum?

This is an Editorial on "Classification of all alternatives to the Born rule in terms of informational properties" by Thomas D. Galley and Lluis Masanes, published in Quantum 1, 15 …

## What kind of content is shared by Quantum?

Quantum is active on social media to foster engagement and spread news relevant for the quantum science community. As Quantum grows, it becomes important to have transparent guidelines about the …

## Quantum meets SciPost at YRM 2017

SciPost‘s Jean-Sébastien Caux and Quantum’s Christian Gogolin were both invited to speak about “the future of scientific publishing” at a dedicated session on that topic during YRM 2017 in Tarragona. …

## Quantum obtains an ISSN

Quantum has been assigned an International Standard Serial Number (ISSN) by the ISSN International Centre. The ISSN is similar to the more widely known ISBN, which is used to uniquely …

## On experimentally relevant quantum speedups

This is a Perspective on "Achieving quantum supremacy with sparse and noisy commuting quantum computations" by Michael J. Bremner, Ashley Montanaro, and Dan J. Shepherd, published in Quantum 1, 8 …

## Better local hidden variable models for two-qubit Werner states and an upper bound on the Grothendieck constant $K_G(3)$

Flavien Hirsch, Marco Túlio Quintino, Tamás Vértesi, Miguel Navascués, and Nicolas Brunner,

Quantum 1, 3 (2017). https://doi.org/10.22331/q-2017-04-25-3

We consider the problem of reproducing the correlations obtained by arbitrary local projective measurements on the two-qubit Werner state $\rho = v |\psi_- \rangle \langle\psi_- | + (1- v ) \frac{1}{4}$…

## Collaboration with Fermat’s library

Before our launch issue finally arrives we have further exciting news to share: Quantum is cooperating with Fermat’s Library, a project enabling collaborative online annotation of scientific papers. Papers published …

## 40 submissions

Quantum has received over 40 submissions since the launch in mid November! We would like to take this as an opportunity to thank all authors who have shown their support …