Quantum Physics News

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Quantum Process Tomography Helps Characterize Unknown Quantum Processes

Scientists and engineers from the University of Bristol, UK, and the Centre for Quantum Technologies in Singapore have published work in the June issue of Optica. They demonstrate a new protocol for estimating unknown optical processes, called unitary operations, with precision enhanced by the unique properties of quantum mechanics. This could lead to both dramatically better sensors for medical research and new approaches to benchmark the performance ultra-powerful quantum computers.

29 May 2015

Astrophysicists Probe Effect of Rayleigh Scattering on the Cosmic Microwave Background

Astrophysicists have developed a new method for calculating the effect of Rayleigh scattering on photons, potentially allowing researchers to better understand the formation of the Universe.

29 May 2015

X-Ray and Gamma-Ray Observations Set Limits on Quantum Nature of Space-Time at Extremely Tiny Scales

A team of scientists has used X-ray and gamma-ray observations of some of the most distant objects in the Universe to better understand the nature of space and time. Their results set limits on the quantum nature, or “foaminess” of space-time at extremely tiny scales.

29 May 2015

Optical Data Transport for Faster Computers and Ultra-Secure Quantum Communications

Stanford electrical engineer Jelena Vuckovic wants to make computers faster and more efficient by reinventing how they send data back and forth between chips, where the work is done.

29 May 2015

Donut Hole May Holds Answers for More Efficient, Reliable Quantum Information Teleportation

Putting a hole in the center of the donut--a mid-nineteenth-century invention--allows the deep-fried pastry to cook evenly, inside and out. As it turns out, the hole in the center of the donut also holds answers for a type of more efficient and reliable quantum information teleportation, a critical goal for quantum information science.

29 May 2015

Supermassive Black Holes That Power Radio-Signal-Emitting Jets Linked to Merger History of Host Galaxies

In the most extensive survey of its kind ever conducted, a team of scientists have found an unambiguous link between the presence of supermassive black holes that power high-speed, radio-signal-emitting jets and the merger history of their host galaxies. Almost all of the galaxies hosting these jets were found to be merging with another galaxy, or to have done so recently. The results lend significant weight to the case for jets being the result of merging black holes and will be presented in the Astrophysical Journal.

29 May 2015

Researchers Demonstrate Peculiarity of One-Dimensional Quantum Systems

A quantum system never relaxes. An isolated system (like a cloud of cold atoms trapped in optical grids) will endlessly oscillate between its different configurations without ever finding peace. In practice, these types of systems are unable to dissipate energy in any form. This is the exact opposite of what happens in classical physics, where the tendency to reach a state of equilibrium is such a fundamental drive that is has been made a fundamental law of physics, i.e., the second law of thermodynamics, which introduces the concept of entropy.

28 May 2015

ESO's VLT Reveals Spectacular Red Cloud of Glowing Hydrogen Gas Behind Blue Foreground Stars

This new image from ESO's Very Large Telescope (VLT) in Chile shows a spectacular red cloud of glowing hydrogen gas behind a collection of blue foreground stars. Within RCW 34 -- located in the southern constellation of Vela -- a group of massive young stars hide in the brightest region of the cloud [1]. These stars have a dramatic effect on the nebula. Gas exposed to strong ultraviolet radiation -- as occurs in the heart of this nebula -- becomesionised, meaning that the electrons have escaped the hydrogen atoms.

28 May 2015

Reality Does Not Exist Until Measured

The bizarre nature of reality as laid out by quantum theory has survived another test, with scientists performing a famous experiment and proving that reality does not exist until it is measured.

28 May 2015

Quantum Tunneling Found to be an Instantaneous Process

An international team of scientists studying ultrafast physics have solved a mystery of quantum mechanics, and found that quantum tunneling is an instantaneous process.

28 May 2015

Quantum Physics News

Quantum Process Tomography Helps Characterize Unknown Quantum Processes

Astrophysicists Probe Effect of Rayleigh Scattering on the Cosmic Microwave Background

X-Ray and Gamma-Ray Observations Set Limits on Quantum Nature of Space-Time at Extremely Tiny Scales

Optical Data Transport for Faster Computers and Ultra-Secure Quantum Communications

Donut Hole May Holds Answers for More Efficient, Reliable Quantum Information Teleportation

Supermassive Black Holes That Power Radio-Signal-Emitting Jets Linked to Merger History of Host Galaxies

Researchers Demonstrate Peculiarity of One-Dimensional Quantum Systems

ESO's VLT Reveals Spectacular Red Cloud of Glowing Hydrogen Gas Behind Blue Foreground Stars

Reality Does Not Exist Until Measured

Quantum Tunneling Found to be an Instantaneous Process

Quantum Development in Ireland: A Conversation with John Durcan, Chief Technologist, IDA Ireland

Advancing Quantum Scalability with New Qubit Method

Modified Newtonian Dynamics and the Search for a Ninth Planet

LabOne Q: An Intuitive Software Framework for Scalable Quantum Computing

ORCA-Quest qCMOS Camera by Hamamatsu

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Repeat-Until-Success Algorithm for Quantum Gate Decomposition

Researchers Exploit the Color Centers in Diamond to Enhance Dynamic Nuclear Polarization Processes for NMR Applications

Application of Electro-Optic Phase Modulator in Pound-Drever Hall Technique for Laser Frequency Stabilization

Quantum Physics News

Quantum Development in Ireland: A Conversation with John Durcan, Chief Technologist, IDA Ireland

Advancing Quantum Scalability with New Qubit Method

Modified Newtonian Dynamics and the Search for a Ninth Planet

1New Discovery Links ORC Formation to Merging Galaxy Clusters

2Enhancing Quantum Error Correction Effectiveness

3New Device Enables Fine-Tuning of Information Flow in Qubits

4AIST Selects QuEra’s Neutral-Atom Quantum Computer to Be Installed Alongside NVIDIA-Powered ABCI-Q Supercomputer

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