Quantum Optics News

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New Way to Count Photons

The photodetectors in Alan Migdall’s lab often see no light at all, and that’s a good thing since he and his JQI colleagues perform physics experiments that require very little light, the better to study subtle quantum effects.

17 Aug 2013

Photonic Qubits Teleported With Extreme Reliability

By means of the quantum-mechanical entanglement of spatially separated light fields, researchers in Tokyo and Mainz have managed to teleport photonic qubits with extreme reliability. This means that a decisive breakthrough has been achieved some 15 years after the first experiments in the field of optical teleportation.

16 Aug 2013

Miniature Silicon System Produces Light With Fewer Quantum Fluctuations

One of the many counterintuitive and bizarre insights of quantum mechanics is that even in a vacuum—what many of us think of as an empty void—all is not completely still. Low levels of noise, known as quantum fluctuations, are always present. Always, that is, unless you can pull off a quantum trick. And that's just what a team led by researchers at the California Institute of Technology (Caltech) has done.

9 Aug 2013

UCLA Researchers to Contribute to Development of the Thirty Meter Telescope

With the signing last week of a "master agreement" for the Thirty Meter Telescope — destined to be the most advanced and powerful optical telescope in the world — the University of California and UCLA moved a step closer to peering deeper into the cosmos than ever before.

2 Aug 2013

Novel Theoretical Approach to Reliably Reset Quantum Dot Qubits

What will a quantum computer look like? It will probably not resemble your laptop. Yet, the semiconductor industry, residing at the heart of modern computing, has features that may carry over. Semiconductors are scalable: today’s processors (2.5 centimeters on a side) hold billions of transistors.

10 Jul 2013

New Approach to Explore Universe Using Photonic Lanterns

Research from the Institute of Photonics and Quantum Sciences (IPaQS) at Heriot-Watt, has the potential to revolutionise how we observe the universe using telescopes, with a new approach that exploits ultrashort pulses of laser light to manufacture optical circuits called ‘photonic lanterns’.

10 Jul 2013

Quantum Logic Spectroscopy Enables Study of Single Photons

A team of quantum physicists in Innsbruck led by Christian Roos and Cornelius Hempel have realised an extremely sensitive method for the spectroscopy of atomic and molecular atoms. This technique can be used to closely study a number of particles. The scientists have published their findings in the journal Nature Photonics.

8 Jul 2013

Science Minister Visits Bristol Lab to Learn About Quantum Technologies

Mr Willetts was given a tour of the University of Bristol’s state-of-the-art Centre for Nanoscience and Quantum Information (NSQI) yesterday [4 July], where vibration and acoustic noise levels are among the lowest ever achieved, despite being located in the centre of Bristol.

6 Jul 2013

New Approach to Make Macroscopic Mechanical Resonators Exhibit Quantum Mechanical Behavior

EPFL researchers find a new method for the preparation of non-classical states of a mechanical oscillator.

3 Jul 2013

Quasar Helps Study Early Galaxy in Unprecedented Detail

The early galaxies of the universe were very different from today’s galaxies. Using new detailed studies carried out with the ESO Very Large Telescope and the Hubble Space Telescope, researchers, including members from the Niels Bohr Institute, have studied an early galaxy in unprecedented detail and determined a number of important properties such as size, mass, content of elements and have determined how quickly the galaxy forms new stars. The results are published in the scientific journal, Monthly Notices of the Royal Astronomical Society.

3 Jul 2013