Quantum computing, which will allow Moore's Law to continue beyond the barriers imposed by semiconductor physics, continues to advance in research labs. Major developments include quantum "networking" -- a way to entangle a photon using a laser, quantum registers -- a way of storing qubits for later use, and quantum computing chips -- a technique using "qutons" (quantum photons) on a semiconductor chip. The invention stores qubits in a Cooper box that has more than a billion superconducting aluminum atoms acting together which provides the ability to read a qubit's state without disturbing it.
Demo Advances Quantum Networking
Researchers have transferred information stored in the properties of a cloud of rubidium atoms to the properties of a single photon. They fired a laser through a pair of rubidium atom clouds, causing the clouds to emit a photon that was entangled, or linked at the quantum level, with the atom clouds. The next steps are to develop a quantum node that works with the wavelengths of light used in today's telecommunications networks so that photons can travel longer distances over fiber lines.
A quantum leap forward for computing
Experts presented their latest results at the 5th QIPC workshop. the SQUBIT-2 project is investigating the use of qubits made from special superconducting electric circuits called Josephson Junctions. "Reaching 1000 state cycles within the superconducting qubits lifetime, or decoherence time, was a challenging goal but we have achieved it now," said SQUBIT-2 Coordinator Dude.
Professor Puts New Spin on Quantum Computer Technology
A team of researchers has created a device that can effectively split a stream of quantum objects such as electrons into two streams according to the spin of each. The tiny device could become a key component in quantum computers.
Germans demo working quantum register
Physicists at the University of Bonn have successfully demonstrated a five-qubit quantum register, using neutral atoms.
A neutral atom quantum register [pdf]
4-page description of the details of the system
Design Rules Build on Self-Assembly
Quantum dots patterned with sticky molecular patches could be made to self-assemble into the wires and three-dimensional structures needed for quantum computer circuits.
Teleportation breaks new ground
Physicists in Austria and the US have independently demonstrated quantum teleportation with atoms for the first time. Until now, teleportation had only ever been observed with photons. The results could represent a major step towards building a large-scale quantum computer.
Yale team builds chips for quantum computing
While quantum computing has been verified in a physics lab, building real circuitry on silicon chips has had only sporadic success, until now. Yale University researchers have built what they call QED integrated circuits to manipulate quantum bits.
Researcher makes quantum leap into new technology
Dr Andrew White of UQ’s School of Physical Sciences said quantum cryptography was of great interest to financial institutions because it could provide a commercial advantage.
Success in controlling multi-photon transitions of a superconducting flux qubit
One step closer to realizing a quantum computer
Calculating the Quantum Nightmare
We must awaken to the threat of a quantum computer getting into malicious hands
Circuit Quantum Electrodynamics [pdf]
Coherent Coupling of a Single Photon to a Cooper Pair Box
Speck Trios Make Secret Codes
Researchers from the Canadian National Research Council have devised a way to use quantum dots -- tiny bits of semiconductor -- to print invisible secret codes onto surfaces like documents.
Tokyo development to enable quantum encryption in net designs
The University of Tokyo's Nanoelectronics Collaborative Research Center and Fujitsu Laboratories Ltd. have jointly developed technologies that generate and measure single-photons in data transmission wavelengths, a development that could make quantum encryption a reality in networking designs.