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New High-Resolution Spectroscopy Holds Promise for Quantum Computing

New High-Resolution Spectroscopy Holds Promise for Quantum Computing

A new twist on an old tool lets scientists use light to study and control matter with 1,000 times better resolution and precision than previously possible. [More]
Scientists Observe Current Flow Along Nanochannels at Crystal Surfaces of Topological Insulators

Scientists Observe Current Flow Along Nanochannels at Crystal Surfaces of Topological Insulators

In the latest issue of the journal Nature Physics, German Scientists report that they could observe experimentally the current flow along channels at the crystal surfaces of topological insulators. [More]
Multiprover Interactive Proof System Gains Power by Exploiting Quantum Entanglement

Multiprover Interactive Proof System Gains Power by Exploiting Quantum Entanglement

A big question for researchers in quantum computing is, where does quantum physics give us an advantage? CQT researcher Joe Fitzsimons and his collaborator Thomas Vidick from Caltech have added to the list. Specifically, they give an example of a “multiprover interactive proof system" that gains power by exploiting quantum entanglement. [More]
JQI Researchers Demonstrate Modular Entanglement Between Two Atomic Systems

JQI Researchers Demonstrate Modular Entanglement Between Two Atomic Systems

JQI researchers, under the direction of Christopher Monroe have demonstrated modular entanglement between two atomic systems, separated by one meter. Here, photons are the long distance information carriers entangling multiple qubit modules. Inside of a single module, quantized collective vibrations called phonons connect individual qubits. [More]
New Way to Control Individual Vortices to Improve Performance of Superconducting Wires

New Way to Control Individual Vortices to Improve Performance of Superconducting Wires

Superconductor materials are prized for their ability to carry an electric current without resistance, but this valuable trait can be crippled or lost when electrons swirl into tiny tornado-like formations called vortices. These disruptive mini-twisters often form in the presence of magnetic fields, such as those produced by electric motors. [More]
Quantum Steering Functions as an Essential Resource in Specific Information-Theoretic Tasks

Quantum Steering Functions as an Essential Resource in Specific Information-Theoretic Tasks

Communication security and metrology could be enhanced through a study of the role of quantum correlations in the distinguishability of physical processes, by researchers at the Universities of Strathclyde and Waterloo. [More]
Many Challenges Persist Before Quantum Annealing Helps Solve Complex Optimisation Problems

Many Challenges Persist Before Quantum Annealing Helps Solve Complex Optimisation Problems

Many challenges lie ahead before quantum annealing, the analogue version of quantum computation, contributes to solve combinatorial optimisation problems [More]
New Design Extends Superposition Time of Qubit a Hundredfold

New Design Extends Superposition Time of Qubit a Hundredfold

Quantum computers are experimental devices that promise exponential speedups on some computational problems. Where a bit in a classical computer can represent either a 0 or a 1, a quantum bit, or qubit, can represent 0 and 1 simultaneously, letting quantum computers explore multiple problem solutions in parallel. But such “superpositions” of quantum states are, in practice, difficult to maintain. [More]
Novel Technique to Extend Storage Time of Quantum Memories

Novel Technique to Extend Storage Time of Quantum Memories

The idea of computing systems based on controlling atomic spins just got a boost from new research performed at the Massachusetts Institute of Technology (MIT) and the U.S. Department of Energy's (DOE) Brookhaven National Laboratory. [More]
Researchers Engineer Quantum State Sensitive to the Lorentz-Violating Effects

Researchers Engineer Quantum State Sensitive to the Lorentz-Violating Effects

Ever since Einstein proposed his special theory of relativity in 1905, physics and cosmology have been based on the assumption that space looks the same in all directions - that it's not squeezed in one direction relative to another. [More]