Quantum Optics News

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First Step towards Creating a Secure Quantum Telecommunications Device

Quantum mechanics offers the potential to create absolutely secure telecommunications networks by harnessing a fundamental phenomenon of quantum particles. Now, a team of Stanford physicists has demonstrated a crucial first step in creating a quantum telecommunications device that could be built and implemented using existing infrastructure.

16 Nov 2012

Harnessing Dark Mode to Convert Optical Fields May Boost Quantum Computing

Using tiny radiation pressure forces -- generated each time light is reflected off a surface -- University of Oregon physicists converted an optical field, or signal, from one color to another. Aided by a "dark mode," the conversion occurs through the coupling between light and a mechanical oscillator, without interruption by thermal mechanical vibrations.

16 Nov 2012

New Theory to Avoid and Reverse Heating Effect in Quantum Cascade Lasers

Since its invention 50 years ago, laser light has conquered our daily life. Lasers of varying wave lengths and power are used in many parts of our life, from consumer electronics to telecommunication and medicine. However, not all wave lengths have been equally well researched.

15 Nov 2012

X-ray Laser Pulses Can Strip Electrons from Atoms to Create Ions with Strong Charges

Researchers using the Linac Coherent Light Source (LCLS) at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory have found a way to strip most of the electrons from xenon atoms, creating a "supercharged," strongly positive state at energies previously thought too low.

14 Nov 2012

Quark Gluon Plasma Emits Ultra Short Laser Pulses

Heavy ion collisions at CERN should be able to produce the shortest light pulses ever created. This was demonstrated by computer simulations at the Vienna University of Technology. The pulses are so short that they cannot even be measured by today's technological equipment. Now, a method has been proposed to create the world's most precise stopwatch for the world's shortest light pulses, using a detector which is going to be installed at CERN in 2018.

14 Nov 2012

Gold Nanospheres Generate a Quantum Kiss

Researchers from the Donostia International Physics Center (DIPC) and the Materials Physics Center in Donostia-San Sebastián (CFM) have observed for the first time, with optical methods, the quantum regime in the interaction between nano-sized spheres of gold. This quantum regime has been identified thanks to the change of colour of the gap or empty space between these particles when they are at distances of less than one nanometre. This work, published in Nature journal, enables literally “seeing” a quantum kiss between nanoparticles.

8 Nov 2012

Researchers Test Quantum Mechanical Entanglement with Rotating Photons

To this end, the researchers developed a new method for entangling single photons which gyrate in opposite directions. This result is a first step towards entangling and twisting even macroscopic, spatially separated objects in two different directions.

3 Nov 2012

Scientists Generate Quantum Matter Having Crystal-Like Properties

Both high-valued diamond and low-prized graphite consist of exactly the same carbon atoms. The subtle but nevertheless important difference between the two materials is the geometrical configuration of their building blocks, with large consequences for their properties.

2 Nov 2012

New Device Powered by Quantum Nonlocality Measures Wave-Particle Duality of Photons

What is light made of: waves or particles? This basic question has fascinated physicists since the early days of science. Quantum mechanics predicts that photons, particles of light, are both particles and waves simultaneously. Reporting in Science, physicists from the University of Bristol give a new demonstration of this wave-particle duality of photons, dubbed the 'one real mystery of quantum mechanics' by Nobel Prize laureate Richard Feynman.

2 Nov 2012

New Book on Potential of Semiconductor Nanostructures in Exploration of Quantum Optics

Research and Markets has announced the addition of Woodhead Publishing Ltd's new book "Quantum optics with semiconductor nanostructures" to their offering.

1 Nov 2012