Quantum Information

Northwestern University researchers have successfully achieved quantum state transfer over a 30.2-km fiber carrying 400-Gbps C-band classical traffic.

In 1974, Stephen Hawking proposed that black holes could evaporate. But do we understand how this might happen?

New work provides a good view of where the field currently stands.

Cornell University researchers have demonstrated that acoustic sound waves can be used to control the motion of an electron as it orbits a lattice defect in a diamond, a technique that can potentially improve the sensitivity of quantum sensors and be used in other quantum devices.

A multi-institutional team of scientists in the United States, led by physicist Peng Wei at the University of California, Riverside, has developed a new superconductor material that could potentially be used in quantum computing and be a candidate "topological superconductor."

New ion-trap chip eschews lasers for an integrated circuit that can be mass produced in existing semiconductor factories.

Quantum information theory is the field behind quantum computing, but experts in this field are also applying their way of thinking to some big questions in ...

Researchers at Purdue University have trapped alkali atoms (cesium) on an integrated photonic circuit, which behaves like a transistor for photons (the smallest energy unit of light) similar to electronic transistors. These trapped atoms demonstrate the potential to build a quantum network based on cold-atom integrated nanophotonic circuits.

Universities and colleges nationwide are beginning to investigate quantum education to develop a workforce ready for quantum technology.

Experiment captures atoms in free fall to look for gravitational anomalies caused by universe's missing energy

A technique to charge a battery inside a quantum computer relies on sorting qubits in an imitation of Maxwell's demon, a 19th-century thought experiment once thought to break the laws of physics

Scientists at MIT have found that neutrons can actually be made to cling to particles called quantum dots, which are made up of tens of thousands of atomic nuclei, held there just by the strong force.

Over the past few decades, quantum physicists and engineers have been trying to develop new, reliable quantum communication systems. These systems could ultimately serve as a testbed to evaluate and advance communication protocols.

What Is Quantum Advantage? A Quantum Computing Scientist Explains An Approaching Milestone Marking The Arrival Of Extremely Powerful Computers

Several companies have made quantum computers, but these early models have yet to demonstrate quantum advantage: the ability to outstrip ordinary supercomputers.

A startup company has upped its qubit count by an order of magnitude in two years.

Imagine a flock of birds as they wheel across the sky: surging into a mass, flowing into ribbons that twist and turn again into fantastic shapes. If you follow one bird within the flock, you can describe its actions, the way it flaps its wings or uses its tail to brake. Yet, even if you could minutely account for the behavior of each individual bird, the shapes and patterns of their collective flight would still…

Nothing in the world is perfect. This is also true in materials research. In computer simulations, one often represents a system in a highly idealized way; for example, one calculates the properties that an absolutely perfect crystal would have. In practice, however, we always have to deal with additional effects—with defects in the crystal lattice, with additional particles that attach to the material, with…

Quantum computing is still really, really hard. But the rise of a powerful class of error-correcting codes suggests that the task might be slightly more feasible than many feared.

A potentially game-changing theoretical approach to quantum computing hardware avoids much of the problematic complexity found in current quantum computers. The strategy implements an algorithm in natural quantum interactions to process a variety of real-world problems faster than classical computers or conventional gate-based quantum computers can.