It takes two to tangle
Quantum entanglement-the mysterious phenomenon that allows a quantum state to be transmitted huge distances apparently instantaneously-could do wonders for chip manufacture

Back to the future
19th century physicists almost discovered quantum theory

Matchmakers
All you need to find a photon's distant twin is the right mirror

Taming the multiverse
Parallel universes are no longer a figment of our imagination. They're so real that we can reach out and touch them, and even use them to change our world, says Marcus Chown

Entangled clouds raise hope of teleportation
Linking trillions of atoms by entanglement brings quantum communication and teleportation a step closer

BECs win prizes
Creators of weird quantum states and mirror molecules scoop Nobels

Can a Grand Unified Theory come out of quantum mechanics alone?
But a possible breakthrough towards the great prize of physics is flawed, according to a Nobel Laureate

Round the twist
Tying your shoelaces can entangle you in aspects of quantum theory

Liquid space
There's so much going on in a vacuum that it's beginning to look like a substance in its own right. Paul Davies offers you a guided tour of the quantum ether

'Quantum repeater' promises complete long-distance secrecy
Scientists design a device to tackle quantum communication signal loss - what's more, all the components are available

Multiple choice
You don't need a final answer at the quantum game show. So come on down, says Adrian Cho, and everyone's a winner

Through the keyhole
If you can't see what's inside, send in the entangled photons

Teleporting larger objects becomes real possibility
The advance is thanks to a method that in theory could be used to "entangle"absolutely any kind of particle

Cat-in-the-box
Are you fed up with absurd notions of quantum weirdness? Don't worry, you're in good company, says Ivan Semeniuk

Quantum cloning nears perfection limit
The duplication technique is the best way currently conceivable of decoding the latest cryptographic technologies

The weirdness barrier
What keeps us safe from the absurdity of the quantum world?

"Exact uncertainty" brought to quantum world
Theoretical physicists use 80-year old maths to improve the famous Heisenberg uncertainty principle

Quantum wormholes could carry people
"Ghost radiation" could widen a wormhole to allow someone to travel to another part of the Universe

Quantum foot in the door
Scientists believe they could open tiny doors that lead to the rest of the universe wide enough to allow someone to travel through
25 May 02

Quantum teleportation technique improved
Australian researchers say they have significantly improved a technique for teleporting a laser beam

Quantum entanglement stronger than suspected
Quantum linking of particles is more robust than scientists thought and may help them develop new types of quantum computers

The ideas machine
Human inventiveness has reached the end of the road. Something far smarter is about to take over, says Robert Matthews

Light stops dead
Does the key to quantum computing lie in freezing a light beam?

Quantum gate plugs data leaks
Quantum computers leak information like water through a sieve - a problem that anyone hoping to build one must overcome. But a novel quantum logic gate based on photons could be the answer

Line 'em up
If you want to build a quantum computer, this could be where to start

Stuck on chips
Even quantum computers can't do without old-fashioned silicon

Long-lasting qubits
Quantum computing has come a step closer, thanks to the work of David Kielpinski of the National Institute of Standards and Technology in Boulder, Colorado

Spin doctors
Bury a phosphorus atom in the core of a conventional silicon chip and you're well on the way to unleashing the formidable computing power of the quantum world

Quantum computing takes a step in from the cold
Physicists have found a relatively easy way to make a Bose-Einstein condensate, the bizarre state of ultra-cold atoms that is helping to shed light on the quantum world