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Found 40 results for alice bob

Closing the last loophole for unhackable quantum security

28 October 2015

Need to share a secret? A code that's as strong as the laws of physics is within our grasp and could finally make sure your data can never leak

The bitcoin rush: Pioneers on the financial frontier

28 January 2015

Meet miners, outlaws and sheriffs all striving to get ahead in the volatile new world of virtual money. Financial Times reporter Kadhim Shubber is your guide

Quantum control: How weird do you want it?

10 September 2014

Entanglement used to be the gold standard of the quantum world's weirdness, now a new and noisy phenomenon could give us all the benefits with less of the fuss

Quantum weirdness: The battle for the basis of reality

31 July 2013

Reality, relativity, causality or free will? Take quantum theory at face value and at least one of them is an illusion – but which, asks Michael Brooks

Quantum information: The promise

3 July 2013

Processing data in quantum states offers the prospect of peerlessly powerful, economical and secure number crunching. The challenge is to make it a reality

Black hole firewall: Trouble on the edge

3 April 2013

The problem that Stephen Hawking spotted around black holes has made a fiery return. Anil Ananthaswamy reports on how it threatens quantum theory and gravity

Mindreader: Facebook of revelations

25 April 2012

Your social networks know far more about you than you reveal, and as Jim Giles discovers, they might even know you better than you know yourself

Quantum hackers: Cracking the uncrackable code

19 October 2011

It promised the ultimate in security, but quantum cryptography is under attack – from cunning eavesdroppers who have worked out how to fool the system

Unbreakable: The MIT time-lock puzzle

18 May 2011

A giant of internet cryptography has devised a code that he says will take 35 years to solve – with a mystery prize sealed in lead. MacGregor Campbell reports