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quantum entanglement News
Nanophotonic Simulator Performs Computations at the Quantum Level
ROCHESTER, N.Y., July 21, 2023 — Researchers at the University of Rochester (UR) have developed a photonics-based quantum simulation system that simulates physical phenomena at the quantum level. The nanophotonic quantum simulator performs chip-scale simulations in a quantum-correlated synthetic space by controlling the frequency of quantum-entangled photons over time. An efficient simulator for quantum systems is one of the original goals of quantum computing. Synthetic dimensions in photonics present a powerful
REM Atoms and Nanophotonic Resonator Offer Path to Quantum Networks
GARCHING, Germany, June 29, 2023 — Researchers at Max Planck Institute of Quantum Optics (MPQ) and Technical University of Munich (TUM) demonstrated a potential platform for large-scale quantum computing and communication networks. Secure quantum networks are of interest to financial...
Liquid Crystal-Based Devices Manipulate Light with Flat Optics to Uncover Hidden Images
WASHINGTON, D.C., May 13, 2022 — An ancient optical illusion has been updated using the flat optics of today to create a device that reveals a hidden image when light is shined on it. Developed at the University of Ottawa, the magic window is a liquid crystal (LC)-based device that...
Researchers Use Quantum Effects to Achieve Ultrabroadband Bandwidth
ROCHESTER, N.Y., Nov. 2, 2021 — Researchers at the University of Rochester have used a thin-film nanophotonic device and the phenomenon of quantum entanglement to generate very large bandwidth — a record for ultrabroadband, the researchers said. The researchers entangled...
Researchers Devise Method to Observe Atomic Interactions, Quantum Mechanics
PRINCETON, N.J., Nov. 12, 2020 — Researchers from Princeton University have formulated a method to control and measure atoms that are indistinguishable when observed with an optical lens. The work allows the researchers to observe atomic interactions and quantum mechanical...
Photon Connection Helps Researchers Entangle Large, Distant Objects
KØBENHAVN, Denmark, Oct. 12, 2020 — Researchers at the Niels Bohr Institute at the University of Copenhagen have entangled two very different quantum objects — a mechanical oscillator/vibrating dielectric membrane, and a cloud of atoms with each atom acting as a tiny magnet. The...
Device Produces Controllable Single Photons from Quantum Dots
DUBLIN, July 16, 2020 — For quantum computing applications, it will be necessary to control emissions from quantum emitters, or quantum dots (QDs), and to produce quantum entanglement of the emission from pairs of QDs. A new photon-emitting device developed at Trinity...
Quantum Entanglement Demonstrated Aboard Orbiting CubeSat
SINGAPORE, July 1, 2020 — An international research team led by the National University of Singapore (NUS) has generated and detected quantum entanglement onboard a CubeSat nanosatellite weighing less than 2.6 kg and orbiting Earth. CubeSats are low-resource, cost-effective...
Scientists Show Microwave-Optical Entanglement via Mechanical Interface
COPENHAGEN, April 3, 2020 — Using lasers, researchers at the Niels Bohr Institute at the University of Copenhagen have developed a way to entangle electromagnetic fields from microwave radiation and optical beams. Creating entanglement between microwave and optical fields...
Researchers Use Photonic Systems to Improve Quantum Orienteering Protocols
HEFEI, China, March 5, 2020 — Scientists at the University of Science and Technology of China (USTC) have enhanced the performance of quantum orienteering with entangling measurements via photonic quantum walks. Quantum entanglement can manifest itself in both quantum states and...
Researchers Demonstrate 3-Photon Split in the Microwave Domain
WATERLOO, Ontario, Feb. 28, 2020 — Researchers at the University of Waterloo have directly split one photon into three. To do so, they created a non-Gaussian state of light using spontaneous parametric down-conversion (SPDC). Traditional SPDC, which splits a high-energy pump photon...
Sensor Uses Quantum Entanglement to Detect Magnetic Excitation
TOKYO, Feb. 21, 2020 — Using the principle of quantum entanglement, scientists at the University of Tokyo’s Research Center for Advanced Science and Technology (RCAST) demonstrated the coupling of a millimeter-size magnetic sphere with a sensor and showed that the...
Entanglement Maintained over Long Distance at Telecom Wavelengths
MUNICH, Jan. 27, 2020 — Physicists at Ludwig Maximilian University (LMU), with colleagues at Saarland University, have demonstrated the transport of an entangled state between an atom and a photon via an optical fiber over a distance of up to 20 km. According to the...
Quantum Loop Provides Testbed for Unhackable Communications
CHICAGO, Jan. 13, 2020 — Scientists from the U.S. Department of Energy’s (DOE) Argonne National Laboratory and the University of Chicago (UChicago) have launched a quantum loop, consisting of two connected, 26-mile fiber optic cables that run between Argonne and the...
Silicon Quantum Bits Communicate over Relatively Long Distances
PRINCETON, N.J., Dec. 26, 2019 — A Princeton University research team has shown that silicon quantum bits (qubits), mediated by a microwave photon, can interact even when spaced relatively far apart on a computer chip. The ability to transmit messages across relatively long...
Small Wonders: Fiction Writers Tackle Quantum Physics
SINGAPORE, Dec. 19, 2019 — If you have some downtime over the holidays, consider “getting entangled” in Quantum Shorts: Collected Flash Fiction Inspired by Quantum Physics, an anthology of short stories with quantum physics as its theme, available to download now...
Photonic Cluster States Generated at Room Temps for Quantum Computation
KONGENS LYNGBY, Denmark, Nov. 18, 2019 — To observe quantum phenomena on a macroscopic scale, researchers at the Center for Macroscopic Quantum States (bigQ) and the Technical University of Denmark (DTU) created an extremely entangled quantum state, called a cluster state. The team’s...
Entangled Photon Pairs Create Ultrastrong Correlations
GENEVA, Oct. 21, 2019 — Researchers at the University of Geneva (UNIGE), working with Tehran’s Institute for Research in Fundamental Sciences (IPM), have shown theoretically that a new, ultrastrong quantum correlation is formed when three pairs of entangled photons are...
Optical Clock Uses Laser Tweezers to Manipulate Atoms
BOULDER, Colo., Sept. 20, 2019 — JILA physicists have demonstrated a new atomic clock design that uses laser tweezers to trap, control, and isolate atoms. The tweezers are created by an IR laser beam aimed through a microscope. The beam is deflected to create 10 spots of light for...
New Images Demonstrate the Presence of Photon Entanglement
GLASGOW, Scotland, July 18, 2019 — Scientists at the University of Glasgow have photographed quantum entanglement, capturing for the first time visible evidence of the phenomenon described by Einstein as “'spooky action at a distance.” The image pictures a form of quantum...
Physicists Develop New Method to Verify Photon Entanglement
VIENNA, July 15, 2019 — A team of researchers from the University of Vienna and the Austrian Academy of Sciences (ÖAW) has introduced a novel technique to detect entanglement even in large-scale quantum systems. Efficient methods have been tested for systems...
New Theory Aims to Advance Quantum Computing
NEW YORK, July 12, 2019 — A new protocol for storing and releasing a single photon in an embedded eigenstate — a quantum state that is virtually unaffected by loss and decoherence — could advance the development of quantum computers. Created by researchers at...
Prototype Could be Used to Connect Quantum Computers
KLOSTERNEUBURG, Austria, June 28, 2019 — Physicists from the Institute of Science and Technology Austria (IST Austria) used a mechanical oscillator to produce entangled radiation. According to the research team, this is the first time a mechanical object has been used to create entangled...
In a New Quantum Simulator, Light Behaves Like a Magnet
LAUSANNE, Switzerland, March 26, 2019 — When following the laws of quantum mechanics, systems made of many interacting particles can display behavior so complex that they cannot be quantitatively described by even the most powerful computers. In 1981, visionary physicist Richard Feynman...
Scientists Demonstrate Topologically Protected Biphoton States
SYDNEY, Australia, Nov. 5, 2018 — An optical circuit based on the principles of topology could provide protection for propagation of the biphoton states that will be needed for quantum computing, in order to inhibit scattering or loss of photons. Researchers at the University of...
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April 2024
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