Articles tagged with Quantum Optics
Researchers create 3D light fields to excite electrons into previously inaccessible quantum states, opening up new avenues for investigating chiral structures and controlling light-matter interactions. This approach could lead to advances in chiral sensing and molecular chirality studies.
ICFO researchers have achieved the longest storage time for single photons in a solid-state quantum memory, storing them for up to 180 microseconds. This was made possible by the spin rephasing protocol, which counteracts decoherence effects and restores the collective spin excitation.
The study presents an asynchronous measurement-device-independent quantum cryptographic conferencing protocol that overcomes scalability challenges in conventional protocols. The protocol enables the generation of secure keys at higher rates, making it suitable for larger-scale quantum networks.
Mandal is working to develop computer tools for designing quantum materials required for quantum computers and advanced technologies. His research focuses on understanding and designing materials that can protect delicate quantum states.
Researchers create powerful optical device with layered semiconductor and metasurface, enhancing nonlinear frequency conversion and enabling efficient light mixing and transformation. The device has potential applications in telecommunications, quantum communication, and photonic quantum computing.
A team of researchers from Wits and Bordeaux demonstrated a new way to send information through the atmosphere without correcting for atmospheric distortion. The findings, published in Science Advances, could help pave the way for more reliable long-distance optical communication, including links to satellites and spacecraft.
SEAS researchers demonstrate a unique 'all-mechanical coherence protection' of a silicon-vacancy spin in diamond using continuous mechanical driving fields made of phonons. This approach extends the spin coherence time by roughly a factor of three, establishing the potential for compact, sound-based quantum networks on chips.
Researchers from the University of Osaka have developed a prediction framework that rapidly evaluates promising quantum materials without sacrificing accuracy. The framework enables the evaluation of optical losses using simplified theoretical expressions, making searches much more tractable.
Researchers developed a quantum light translator that preserves phase information through four-wave mixing, enabling secure communication networks and quantum computing. The study demonstrates strong phase preservation across a wide range of operating conditions, with correlations exceeding 0.95 in some cases.
Kartik Srinivasan has been appointed as the new editor-in-chief of Optica Quantum, bringing extensive expertise in quantum photonics and a distinguished record of scientific leadership. He will work to support the journal's success and serve its community with an exceptional editorial board and support team.
Physicists at the University of Basel and Technical University of Munich developed a method to study the internal behavior of Wigner crystals, a fragile quantum state. By illuminating a single atomic layer of tungsten diselenide and measuring reflected light, they observed new optical features revealing collective electron dynamics.
A team of physicists from Boston College created a quantum nanocorral that can trap and control charged excitons, enabling precise electrical control of tiny light sources. The discovery opens up new ways to control hybrid charge, photon, and spin quantum states.
Researchers at NIST successfully transmitted entangled photons through a commercial fiber-optic network, a crucial step towards building quantum networks. The study demonstrates the feasibility of using existing infrastructure to connect distant users and could enable ultra-secure communications and boost quantum computing power.
Exceptional points in non-linear systems follow a universal geometric order, according to a new study published in Nature Communications. The findings have implications for the design of highly sensitive sensors and could lead to a deeper understanding of non-Hermitian Physics.
Researchers at Max Planck Institute create a new optical fiber by freezing a liquid core in nitrogen, achieving extreme nonlinearities and optoacoustic memory. This breakthrough enables drastically reduced energy consumption for photonic computing architectures.
Researchers use periodic driving to transform optical lattice into accurate SYK model simulator, reproducing strong quantum chaos and information scrambling. This method opens door to studying complex quantum phenomena in strongly interacting systems.
A team of researchers developed a programmable quantum simulator that shapes light to replicate how particles move through complex materials. The platform, called spatial light modulators, allows for the simulation of particle motion on various geometries, including closed loops and cylindrical surfaces.
A team of scientists has developed a method to measure multiple quantum channels of light simultaneously, even when almost all the light is lost before reaching the detector. This breakthrough enables the detection of complex quantum states and provides a practical route toward real-world high-dimensional quantum technologies.
Researchers at Max Planck Institute develop technique to interrogate molecules on surfaces with spectroscopic precision, reaching the ultimate quantum limit. This breakthrough enables study of molecule-surface interactions and molecular quantum technologies.
The U-M-led QuPID project aims to design connectable quantum photonic chips for field-ready, lab-grade measurements. The team plans to miniaturize these technologies with a suite of quantum components, envisioned as 'Legos' to be combined for building different devices.
The São Paulo School of Advanced Science on Nonlinear and Quantum Photonics will bring together leading global specialists in nanophotonics, nonlinear optics, and quantum optics. The event will provide two weeks of intensive learning on key topics including quantum optics and information.
Researchers have successfully generated correlated photon pairs using sunlight as the sole pump source for spontaneous parametric down-conversion. The system, which eliminates the need for lasers and external power, achieves comparable ghost-imaging visibility to conventional laser-based systems. This breakthrough enables a fully passi...
A German-Japanese research team applies quantum geometry to non-Hermitian photonic systems, introducing a new degree of complexity. They develop a method to measure the quantum metric directly, enabling the creation of programmable artificial potentials for light and new design possibilities for photonic systems.
Scientists have successfully demonstrated atomic spin qubit interaction with a single-quantum sound wave, opening up new possibilities for quantum information storage and sensing applications. The experiment uses phonons to interact with atomic defects in diamond, enabling precise measurement of forces and temperatures.
Researchers propose a new approach to secure optical communication by hiding information in the physical structure of light, making it difficult for unauthorized parties to intercept or decode. Computer simulations showed that the method can transmit information reliably without revealing it through changes in beam size or intensity.
A team of researchers led by Kazuhiro Yamamoto has proposed a method to create a momentum-squeezed state in movable mirrors, which significantly broadens the quantum superposition of a mirror's position. This approach can amplify the signal of quantum entanglement generated by gravity, making it easier to detect.
A new laser source generates a specific type of light source called a frequency comb in the mid-infrared region, paving the way for miniaturization. The device overcomes engineering challenges to produce bright, stable, and compact frequency combs.
Researchers from NIST and University of Colorado, Boulder, have demonstrated highly stabilized fiber links for quantum networking. They achieved nanometer precision stabilization while separating the classical light from the quantum signal, enabling the transmission of quantum information reliably.
The study measures the temporal duration of individual pulses of bright squeezed vacuum (BSV), a unique quantum state of light. Each BSV pulse lasts just around 27 femtoseconds, placing it firmly in the ultrafast regime.
Researchers at the University of Rochester have developed a squeezed phonon laser that precisely controls individual particles of vibration or sound, allowing for accurate measurements of gravity and other forces. This technology has the potential to create more accurate, 'unjammable' navigation systems without relying on satellites.
Researchers at Hiroshima University have developed a new experimental method to demonstrate the physical delocalization of individual photons in an interferometer. The study challenges traditional interpretations of quantum mechanics and has significant implications for high-tech sensors and our understanding of reality.
Researchers have developed programmable 2D material–organic molecule hybrids with high efficiency and nanoscale spatial precision using DNA origami triangles. This approach enables the creation of arrays of solid-state single-photon-emitter ensembles with excellent spectral and intensity stability, opening a route toward miniaturized h...
Researchers have shown that topology can guide multiple, information-carrying light signals through chip-based photonic communication systems, making them more powerful and reliable. This breakthrough could enable the creation of networks of chips that communicate using light while taking advantage of topology's robustness.
A team from Tokyo Metropolitan University successfully detects laser-assisted electron scattering using circularly polarized light, shedding light on atomic scale helicity and its impact on electron-matter interaction. The signal agrees with theory, but further work is needed to improve detection efficiency and accuracy.
The Harvard researchers' new device is elegantly designed to be tunable, with a bilayer design that becomes geometrically chiral and able to 'read' chiral light. By using the MEMS device to continuously vary the twist angle and interlayer spacing, the team showed they could tune the device's intrinsic ability to read different chiral l...
Researchers at Politecnico di Milano and CNR have developed a new ultrafast computer technology controlled by light, potentially hundreds of times faster than traditional electronics. The technology manipulates the state of electrons in matter using oscillating light, enabling operations at rates above 10 terahertz.
Scientists at Columbia University have experimentally confirmed that quantum fluctuations in a 2D material can alter the properties of a nearby crystal. The team placed a nanometer-sized flake of hexagonal Boron nitride on top of a superconducting material, where the vibrations matched and interacted, suppressing superconductivity.
Researchers aim to harness entanglement for high-precision networking, improving measurement sensitivity and resolving finer details. The five-year effort seeks to establish ways to maintain entanglement over time, paving the way for a future quantum internet.
Researchers at uOttawa have developed a new technique called Stimulated Parametric Down-Conversion (StimPDC) to mitigate the effects of atmospheric turbulence on free-space quantum key distribution. This method reduces quantum error rates below the security threshold even under strong turbulence.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences have discovered a new way to generate ultra-precise, evenly spaced laser light combs on a photonic chip. This breakthrough could miniaturize optical platforms like spectroscopic sensors or communication systems.
The Harvard team developed a new microfabrication method to produce high-performance, curved optical mirrors with extremely smooth surfaces. The mirrors can control light at near-infrared wavelengths, enabling fast and efficient quantum networking.
Giant superatoms combine two quantum-mechanical constructs to suppress decoherence and create entanglement, opening opportunities for scalable and reliable quantum systems. This breakthrough enables quantum information to be protected, controlled, and distributed in new ways.
A team of scientists experimentally demonstrated deterministic entanglement-assisted quantum communication over 20.121 km in fiber channels, outperforming classical communication in metropolitan areas. They proposed an improved continuous-variable dense coding scheme to enhance transmission efficiency and reduce excess noise.
Researchers have successfully demonstrated the first InAs/InP quantum-dot laser in the mid-infrared 2 μm band, achieving a low threshold current density of 118 A/cm² at room temperature. The device's precise control strategy and high-density, uniform quantum-dot ensemble enable high-performance devices on heterogeneous platforms.
A research team has demonstrated how quantum mechanical entanglement can be used to measure several physical parameters simultaneously with increased precision. By distributing atoms into up to three spatially separated clouds, the effects of entanglement act at a distance, reducing measurement uncertainties and canceling disturbances.
A nanostructure composed of silver and an atomically thin semiconductor layer can be turned into an ultrafast switching mirror device, displaying properties of both light and matter. This discovery could lead to dramatically increased information transmission rates in optical data processing.
Dr. Marlan Scully traces the journey of quantum mechanics, from its quirky beginnings to its role in solving science's toughest challenges, including quantum computing, cryptography, and gravitational wave detection.
Uriel Levy has been appointed as the inaugural editor-in-chief of SPIE's Advanced Quantum Catalyst journal, which will serve as a premier venue for real-world quantum applications. The journal aims to bridge the gap in quantum research publishing landscape by emphasizing implementation, integration, and cross-disciplinary applications.
A team of scientists proposes a new scheme for 1D DTQW systems with coherent multiple long-range connectivity in the synthetic frequency lattice. This enables faster diffusion speed and breaks the weak coupling limit, facilitating quantum gate operations.
Researchers at the University of Trieste and CNR-INO have achieved the first imaging of individual trapped ytterbium atoms in Italy. By combining intense fluorescence pulses with fast re-cooling, they demonstrated record-speed imaging of individual atoms, enabling precise onsite atom counting and advancing quantum computing applications.
Researchers at Paderborn University and TU Dortmund University have developed materials smaller than the wavelength of light and precisely manipulated photons. They created quantum light sources for quantum computing and ultra-fast communication, as well as low-temperature electronics to control quantum experiments.
A team from the University of the Witwatersrand and Huzhou University discovered a vast alphabet of high-dimensional topological signatures, enabling robust quantum information encoding. This breakthrough utilizes orbital angular momentum to reveal hidden topologies in entangled photons.
Researchers have developed a nearly 100 times smaller device that can efficiently control lasers required for thousands of qubits, unlocking potential for larger quantum computers. The device uses microwave-frequency vibrations to manipulate laser light with extraordinary precision.
Researchers developed a precision magnetometer based on magneto-optic material that changes optical properties in response to a magnetic field. The device can detect magnetic fields comparable to those of high-performance cryogenic magnetometers, but with minimal size, weight and power consumption.
The field of quantum structured light has transformed the way we communicate, measure and process information by combining quantum information with spatial and temporal structures of light. This technology enables simpler and faster circuits for quantum computing, as well as improved resolution techniques in imaging and metrology.
Scientists developed a Rydberg-atom detector to measure weak terahertz signals, enabling precise spectroscopy and quantum sensors. The detector uses a gas of rubidium atoms in a Rydberg state, tuning them to specific frequencies for calibration.
Researchers have demonstrated how controlling the structure of photons in space and time enables tailored quantum states for next-generation communication, sensing, and imaging. This breakthrough offers new pathways for high-capacity quantum communication and advanced technologies.
The summit brings together experts and professionals to discuss best practices in quantum education, with a focus on increasing accessibility and visibility of quantum science. The event aims to cultivate a stronger pipeline of talent and knowledge in the field.
Researchers successfully demonstrated entanglement swapping using sum-frequency generation between single photons with a high signal-to-noise ratio. This achievement is expected to contribute to the miniaturization and efficiency improvement of photonic quantum information processing circuit, as well as the extension of transmission di...
Kono recognized for his contributions to optical physics, light-condensed matter interactions and photonic applications of nanosystems. His research explores how light interacts with materials at the nanoscale, potentially leading to new technologies in electronics and quantum communication.