Reality check: Closing the quantum loopholes
23 February 2011
Can the universe really be as weird as quantum theory suggests? Ingenious experiments are coming close to settling the issue, says Anil Ananthaswamy
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Found 40 results for alice bob
A measure for the multiverse
3 March 2010
Is our universe just one of many? The idea divides physicists, but now one researcher has found the first hint that the multiverse really exists
'Quackers' tarnish quantum secrecy's halo of invincibility
15 October 2008
As the first network protected by quantum cryptography is switched on, eavesdroppers are using increasingly sophisticated methods to crack such "unhackable" systems
'Quantum ATM' rules out fraudulent web purchases
7 November 2007
A "quantum key" passed from the ATM to a cellphone could make it impossible for someone to use your credit card to make fraudulent transactions online
'Half-quantum' cryptography promises total security
17 October 2007
Sharing an encryption key securely is possible even if one party remains firmly rooted in the world of classical physics
The second quantum revolution
20 June 2007
To track down a theory of everything, we might have to accept that the universe only exists when we're looking at it
Noise keeps spooks out of the loop
23 May 2007
A novel method of encrypting messages is proposed that uses the natural thermal noise created by resistors
Curiosity doesn't have to kill the quantum cat
9 May 2007
A landmark experiment hopes to bring Schrödinger's cat back from the brink of death – it could rewrite our understanding of reality
The elephant and the event horizon
25 October 2006
What happens when you throw an elephant into a black hole? The answer may shake the foundations of what we thought we knew about space and time, says Amanda Gefter
Black holes, but not as we know them
19 January 2005
They may be the most fearsome objects in the universe, swallowing everything in their path, but J R Minkel says black holes are misunderstood
