Quantum Physics News

New Entanglement Technique Could Make Atomic Clocks More Accurate

March 26, 2015

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New Technique Could Make Atomic Clocks More Accurate

Researchers have developed a new technique that can entangle thousands of atoms with a single photon, opening the door to a new class of entangled states. Physicists from MIT and the University of Belgrade have developed a new technique that can successfully entangle 3,000 atoms using only a single photon. The results, published today in […]

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Quantum Experiment Verifies Nonlocal Wavefunction Collapse for a Single Particle

March 25, 2015

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Quantum Experiment Verifies Nonlocal Wavefunction Collapse

Physicists from Griffith University have demonstrated “spooky action at a distance” for the first time with no efficiency loophole by splitting a single photon between two laboratories and experimentally testing if the choice of measurement in one lab really causes a change in the local quantum state in the other lab. An experiment devised in […]

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Entanglement Can Improve Optical Sensor Performance

March 9, 2015

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Entanglement Can Improve the Performance of Optical Sensors

A new study from MIT demonstrates that entanglement can improve the performance of optical sensors, even when it doesn’t survive light’s interaction with the environment. The extraordinary promise of quantum information processing — solving problems that classical computers can’t, perfectly secure communication — depends on a phenomenon called “entanglement,” in which the physical states of […]

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New Form of Quantum Friction Observed

February 25, 2015

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Yale Physicists Discover a New Form of Quantum Friction

Physicists at Yale University have observed a new form of quantum friction that could open new avenues in the fields of nonlinear quantum optics and quantum information, where systems with multi-dimensional steady state manifolds can be used as error corrected logical qubits. The researchers have experimentally confined the state of a harmonic oscillator to the […]

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New Technique Extends Duration of Quantum States

January 30, 2015

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New Technique Greatly Extends Duration of Fragile Quantum States

Using a qubit design that employs nitrogen atoms embedded in synthetic diamond, a team of researchers has developed a new technique that greatly extends duration of fragile quantum states. 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 […]

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Berkeley Physicists Demonstrate That Space is Not Squeezed

January 29, 2015

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Quantum Computer Shows Space Is Not Squeezed

Using partially entangled atoms, a new experiment by UC Berkeley physicists demonstrated more precisely than ever before that space looks the same in all directions. Berkeley — 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 […]

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Experimental Observations of Multiparty EPR Steering and Genuine Tripartite Entanglement

January 15, 2015

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Extending Einstein-Podolsky-Rosen Quantum Mechanics Paradox

Using an optical network, researchers experimentally confirm that entanglement associated with the EPR paradox can be shared over three or more distinct optical systems. An international team, including researchers from Swinburne University of Technology, has demonstrated that the 1935 Einstein-Podolsky-Rosen (EPR) quantum mechanics paradox may be extended to more than two optical systems, paving the […]

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New Half-Light Half-Matter Quantum Particles

December 30, 2014

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Study Unveils New Half-Light Half-Matter Quantum Particles

A newly published study details how a team of researchers were able to discover half-light, half-matter particles in atomically thin semiconductors. Prospects of developing computing and communication technologies based on quantum properties of light and matter may have taken a major step forward thanks to research by City College of New York physicists led by […]

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Researchers Demonstrate Superconductivity without Cooling

December 4, 2014

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Superconductivity without Cooling

New research details how scientists used an infrared laser pulse to briefly modify the structure of a high-temperature superconductor, removing its electrical resistance at room temperature. Superconductivity is a remarkable phenomenon: superconductors can transport electric current without any resistance and thus without any losses whatsoever. It is already in use in some niche areas, for […]

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Physicists Demonstrate Control of a Two-Qubit System

November 13, 2014

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UCSB Physicists Detail a Piece of the Quantum Puzzle

In a newly published study, UCSB physicists demonstrate the high level of controllability needed to explore ideas in quantum simulations. While the Martinis Lab at UC Santa Barbara has been focusing on quantum computation, former postdoctoral fellow Pedram Roushan and several colleagues have been exploring qubits (quantum bits) for quantum simulation on a smaller scale. […]

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New Theory Suggests Quantum Effects Caused by Interacting Parallel Worlds

November 13, 2014

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Quantum Weirdness Caused by Interacting Parallel Worlds

A new theory of quantum mechanics presumes not only that parallel worlds exist, but also that their mutual interaction is what gives rise to all quantum effects observed in nature. The theory, first published by Professor Bill Poirier four years ago, has recently attracted attention from the foundational physics community, leading to an invited Commentary […]

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Physicists Propose Existence of Parallel Universes, Challenge Quantum Science

October 30, 2014

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Scientists Propose Existence of Parallel Worlds

In a newly published study, physicists propose that parallel universes really exist and that they interact and influence one another by a subtle force of repulsion. Griffith University academics are challenging the foundations of quantum science with a radical new theory based on the existence of, and interactions between, parallel universes. In a paper published […]

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Chip-Scale Device Enables Yale Engineers to ‘See Without Looking’

October 20, 2014

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Yale Engineers Develop a Chip Scale Device That Uses Interaction Free Measurement

Engineers at the Yale School of Engineering & Applied Science have developed a chip-scale device that uses the wave-particle duality of single photons to sense the presence of an object without interacting with it – a technique known as “interaction-free measurement.” “Our device uses silicon photonics to create interaction-free measurement on an integrated chip—something previously […]

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Neutron Scattering Experiments Reveal New Quantum Properties of H2O and H2

October 10, 2014

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Physicists Reveal New Quantum Properties of H2O and H2

New neutron scattering experiments reveal the existence of quantum selection rules in molecules and could open the door to new insights about the quantum properties of molecules by providing a unique testing ground for quantum theory. Neutron scattering experiments at the Institute Laue-Langevin (ILL) have uncovered the first known quantum selection rule in molecules, a […]

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“Perfect Fluid” Reveals Clues about the Young Universe Microseconds after the Big Bang

October 3, 2014

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Researchers Develop a Way to Probe the Kind of Matter that Dominated the Universe Immediately After the Big Bang

Nuclear scientists at the U.S. Department of Energy’s Lawrence Berkeley National Lab have made the most precise extraction to date of a key property of the quark-gluon plasma, which reveals the microscopic structure of this almost perfect liquid. By combining data from two high-energy accelerators, nuclear scientists have refined the measurement of a remarkable property […]

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Researchers Track Interactions Between Individual DNA Molecule Segments

September 25, 2014

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Single Unlabeled Biomolecules Detected Through Light

Using an optical microstructure and gold nanoparticles, researchers at the Max Planck Institute have amplified the interaction of light with DNA to the extent that they can now track interactions between individual DNA molecule segments. Being able to track individual biomolecules and observe them at work is every biochemist’s dream. This would enable the scientists […]

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UNIGE Physicists Teleport Quantum State of a Photon to a Crystal

September 22, 2014

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Physicists Teleport Quantum State of a Photon to a Crystal Over 25 Kilometers of Fiber

Quantum physicists have teleported the quantum state of a photon to a crystal over 25 kilometers of optical fiber, smashing the previous record of 6 kilometers. Physicists at the University of Geneva (UNIGE) have succeeded in teleporting the quantum state of a photon to a crystal over 25 kilometers of optical fiber. The experiment, carried […]

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