Quantum Optics News

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Gaussian Encoding May Guarantee Ultimate Capacity of Quantum Optical Communication Channels

MPQ theorist proves that Gaussian encoding guarantees minimum output entropy and hence ultimate capacity of optical communication channels.

25 Sep 2014

Physicists Successfully Teleport Quantum State of a Photon to a Crystal

Physicists at the University of Geneva (UNIGE) have succeeded in teleporting the quantum state of a photon to a crystal over 25 kilometres of optical fibre. The experiment, carried out in the laboratory of Professor Nicolas Gisin, constitutes a first, and simply pulverises the previous record of 6 kilometres achieved ten years ago by the same UNIGE team.

23 Sep 2014

Researchers Directly Entangle Three Photons

Researchers at the University of Waterloo in Canada have directly entangled three photons in the most technologically useful state for the first time, thanks in part to superfast, super-efficient single-photon detectors developed by the National Institute of Standards and Technology (NIST).

15 Sep 2014

Sound Used to Communicate with Artificial Atom

Researchers at Chalmers University of Technology are first to show the use of sound to communicate with an artificial atom. They can thereby demonstrate phenomena from quantum physics with sound taking on the role of light. The results will be published in the journal Science.

12 Sep 2014

Researchers Discover Simpler Method to Run a Quantum Algorithm

Theories show how computing devices that operate according to quantum mechanics can solve problems that conventional (classical) computers, including super computers, can never solve. These theories have been experimentally tested for small-scale quantum systems, but the world is waiting for the first definitive demonstration of a quantum device that beats a classical computer.

12 Sep 2014

Researchers Lock Together Photons to Develop Room-Temperature Superconductors

Researchers at Princeton University have begun crystallizing light as part of an effort to answer fundamental questions about the physics of matter.

10 Sep 2014

Exotic Emergent Phenomena in Two-Dimensional Electron Liquids

Truly two-dimensional objects are rare. Even a thin piece of paper is trillions of atoms thick. When physicists do succeed in producing 2D systems, quantum interactions can lead to new phenomena and Nobel prizes.

10 Sep 2014

UH Researchers Build New Equipment to Make Superconductivity, Thermoelectricity More Viable

Paul Chu, T.L.L. Temple Chair of Science and founding director of the Texas Center for Superconductivity at the University of Houston, will lead a group of investigators as they build a one-of-a-kind piece of equipment designed to further their research and ultimately help make superconductivity and thermoelectricity more commercially viable.

5 Sep 2014

Scientists Reveal Spin-Exchanging Interaction between Ytterbium Atoms in Different Electron Orbital States

LMU/MPQ scientists succeed in revealing a highly symmetric exchange of spins between ytterbium atoms in different electronic orbital states

4 Sep 2014

Quantum Photonics Researchers Develop Single-Photon Cannon

Electronic circuits are based on electrons, but one of the most promising technologies for future quantum circuits are photonic circuits, i.e. circuits based on light (photons) instead of electrons.

1 Sep 2014