A quantum pioneer unlocks matter’s hidden secrets

Quantum fingerprints that keep secrets

We introduce a new type of cryptographic primitive that we call hiding fingerprinting. A (quantum) fingerprinting scheme translates a binary string of length n to d (qu)bits, typically d ≪ n, such that given any string y and a fingerprint of x, one can decide with high accuracy whether x = y. Classical fingerprinting schemes cannot hide information very well: a classical fingerprint of x that g...

A key cytokine unlocks the door.

A key cytokine unlocks the door The synthesis and secretion of a variety of pro-inflammatory cytokines are increased in the chronic inflammatory reaction associated with Helicobacter pylori infection. 1 In this issue (see page 24), Shibata and colleagues confirm increased secretion of tumour necrosis factor (TNF) by the inflamed mucosa, and provide evidence that during H pylori infection there ...

Family violence. Part II. Hidden secrets: child abuse.

A Locking Algorithm with Premature Unlocks

Standard locking protocols exhibit superior performance than other families of concurrency control mechanisms under a wide range of database (DB) workloads and system conngurations. Nevertheless, they have some drawbacks such as unnecessary waiting, which cause an unacceptable behaviour particularly in environments where long transactions (long TAs (LTAs)) are present. In this paper a locking a...

Genuine hidden quantum nonlocality.

The nonlocality of certain quantum states can be revealed by using local filters before performing a standard Bell test. This phenomenon, known as hidden nonlocality, has been so far demonstrated only for a restricted class of measurements, namely, projective measurements. Here, we prove the existence of genuine hidden nonlocality. Specifically, we present a class of two-qubit entangled states,...