... London demonstrated a correlation between the entanglement of three qubits and the entropy of a black hole. In the past year ...
... . like the so-called quantum bits ("qubits") of quantum computers) and the concepts of quantum optics ...
... the storage capabilities of a quantum data bit or "qubit." Whereas a byte of classical data, made ... demonstration of coherent information transfer between the electron spin (processing qubit) and the nuclear spin (memory ...
... from the laser pulse and falls back to one or the other of the two qubit ground states. Depending on which one it falls into, each ... forces it out of superposition and into a definite condition: one of the two qubit states. But because ion A's state is irreversibly ...
... to improve coherence times and increasing the number of qubits in the register, knowing that the power of the processor will grow ... optimistic that we should be able to combine three or more qubits soon," Schoelkopf said. "But to make a system which will actually ...
... time, physicists have experimentally demonstrated a four-qubit bound-entangled state - a peculiar form ... method for distilling the entanglement by working with two qubits at a time. As the researchers explain, the special properties ...
... material, or even changes in temperature can corrupt a qubit and destroy the information it carries. But now a group ... over long distances. The technology to encode useful information on the qubits and subsequently read it back is still lacking ...
... of combing six photons leads to robust qubits that are immune to many of the effects that threaten to scramble quantum ...
... into a versatile tool for manipulating quantum bits (qubits). The researchers adapted a device known as an optical ... . The flexibility of the technique should be applicable to many types of qubits. In addition, closely related techniques are proving ...
... to quickly and efficiently manipulate the quantum states of qubits. The qubits, which are the basic unit of quantum information ... of identifying which physical entities make the best qubits, a team of physicists from the University of California, Santa ...
... has been whether or how it would be possible to actually connect qubits, separated by long distances, to one another," says Lukin ... 's more, we show that the photons can be imprinted with the information stored in a qubit." Quantum entanglement, famously termed "spooky ...
... to optically control and read out a small number of qubits. Now, researchers in Germany have successfully fabricated ... system using electronic excitations in nano-diamonds as qubits and optical nanostructures, so-called photonic ...
Radio waves are used to entangle 10 billion pairs of particles in a silicon crystal, making qubits that will linger as long as several seconds — a lifetime in quantum computing.
... describe a new technique that extends the time a qubit can stay in superposition. Perhaps even more important, the same technique can be used to measure the physical characteristics of qubits that knock them out of superposition in the first place ...
... , though, is that you need hundreds of thousands of qubits. So far, scalability has been something of a problem ...
