Articles tagged with Quantum Optics
University of Queensland researchers have developed a microscopic 'ocean' on a silicon chip, allowing for the study of wave dynamics at an unprecedented scale. The device, made with superfluid helium, enables the observation of striking phenomena, including waves that lean backward and shock fronts.
Artificial materials with subwavelength structures enable shrinking optical setups onto tiny chips. Meta-surfaces manipulate fundamental light properties, boosting photon pair generation efficiency. This allows for on-chip quantum light sources, single-photon detection, and ultra-precise quantum metrology sensors.
A team from the University of Warsaw developed a new type of all-optical radio receiver based on Rydberg atoms, providing extreme sensitivity and internal calibration. The antenna is powered by laser light, enabling precise control over the lasers and electron dance.
Researchers have developed a highly efficient fiber-coupled single-photon source that generates photons directly inside an optical fiber, reducing transmission loss. This breakthrough enables the creation of secure quantum communication networks and paves the way for next-generation all-fiber-integrated quantum computing technologies.
Researchers have created a new method for generating bright squeezed light in the kilohertz frequency band with milliwatt optical power. By integrating passive and active noise suppression techniques, they reduced technical noise by 9 dB below shot noise limit, extending feedback bandwidth to MHz range.
Scientists have made the first-ever direct measurement of quantum uncertainty dynamics with attosecond resolution, revealing it's a dynamic and tunable property. The discovery enables novel petahertz-scale secure quantum communication protocols.
Researchers have created a chip-based device that can split phonons, enabling the connection of different quantum systems via phonons. This device could help link superconducting qubits with spin-based systems, supporting advances in computing and secure communication.
Scientists have developed a new type of metasurface that combines waveguide physics with planar design to achieve precise control over light at the nanoscale. The metasurfaces produce photonic flatbands across wide angles while preserving ultrahigh quality factors, enabling efficient trapping of light and strong interactions with matter.
The team developed a new method to produce ultrafast squeezed light, which can fluctuate between intensity and phase-squeezing by adjusting the position of fused silica relative to the split beam. This breakthrough could lead to more secure communication and advance fields like quantum sensing, chemistry, and biology.
Researchers create nanoscale slots to tune phonon vibrations, enabling ultrastrong coupling and hybrid quantum states in lead halide perovskite. This breakthrough could improve energy flow and performance in optoelectronics.
Researchers developed a chip-based quantum random number generator that generates unpredictable numbers at 3 gigabits per second, fast enough to support large-scale data centers' security needs. The device overcomes challenges of noise interference with an optical amplifier and dual-photodiode design.
Scientists at OIST use advanced spectroscopy to track the evolution of dark excitons, overcoming the fundamental challenge of accessing these elusive particles. The findings lay the foundation for dark valleytronics as a field, with potential applications in quantum information technologies.
Researchers at U-M have established a quantum testbed that links two labs with optical fibers, enabling remote quantum experiments and expanding access to quantum technology development. The testbed allows for the transfer of entangled light over long distances, revolutionizing communication, computing, and scientific discovery.
Researchers have developed a novel nonclassical hybrid passive-active power stabilization technique to break the limit of squeezing in the kHz band. The approach reduces technical noise by −122 dB/Hz to −165 dB/Hz, extending the feedback bandwidth from 50 kHz to MHz range.
The Hebrew University team has developed a way to capture nearly all the light emitted from tiny diamond defects known as color centers. This breakthrough enables the development of next-generation quantum computers, sensors, and communication networks.
Researchers introduced a new wavefront sensing method using microlens arrays to measure the phase of position-correlated biphotons. This technique is inspired by classical SHWS and handles an important type of biphoton state in quantum imaging, which cannot be properly measured by previous methods.
Researchers at MIT introduce the concept of a neutrino laser that uses cooled radioactive atoms to produce amplified neutrino beams. By cooling rubidium-83 to near absolute zero, the team predicts accelerated radioactive decay and production of neutrinos. This innovation could lead to new applications in medicine and communication.
Researchers from UNamur, Harvard, and MTU developed a photonic chip that achieves longer entanglement range using near-zero refractive index photonics, a breakthrough for quantum computing. This technology has the potential to enable more efficient lasers, sensitive optical sensors, and faster ultra-secure telecommunication tools.
Researchers at CCNY discovered a novel coupling between nitrogen-vacancy centers and photonic structures, overcoming challenges in quantum information technologies. The discovery also enables sensitive imaging of photonic modes with remarkable contrast.
The new Harvard device can turn purely digital electronic inputs into analog optical signals at high speeds, addressing the bottleneck of computing and data interconnects. It has the potential to enable advances in microwave photonics and emerging optical computing approaches.
Researchers at Johns Hopkins University have created a new class of quantum sensors that can detect even the faintest molecular vibrations. This breakthrough could lead to earlier disease detection and enhanced industrial process control. By harnessing the power of quantum principles, scientists can now engineer the quantum environment...
Researchers developed an open-source software tool, Phoenix, to simulate light behavior in quantum systems, solving wave equations in record time without high-performance computing expertise. The program is up to a thousand times faster and 99.8% more energy-efficient than conventional tools.
Researchers create metasurfaces to control photons and entangle them for quantum computing and sensing. The discovery could lead to miniaturized optical setups with improved stability, robustness, and cost-effectiveness.
Researchers have discovered a simple way to protect atoms from losing information by shining a single laser beam on them, reducing spin relaxation rates. The technique uses light to subtly shift atomic energy levels, aligning spins and keeping them in sync even as they collide with each other or surroundings.
Researchers at Tampere University have experimentally confirmed the conservation of angular momentum in a single photon converted into a pair, validating a key principle of physics. This breakthrough opens up new possibilities for creating complex quantum states useful in computing, communication, and sensing.
Researchers discovered solitonic superfluorescence in hybrid perovskites at room temperature, enabling exotic quantum states such as superconductivity and superfluidity. The study provides a blueprint for designing materials that can function at high temperatures, a crucial step forward for quantum technology development.
A new quantum random number generator has been developed, surpassing existing generators in speed and size. This breakthrough could significantly impact industries relying on strong data security, including health, finance, and defense.
Researchers developed a photolithography-based process for patterning solution-processed materials, achieving high-resolution patterning of QD color converters for micro-LED displays. The technique preserves optical properties and can be applied to various solution-processed materials, making it highly desirable for the display industry.
Researchers propose a polychromatic-pumped quantum light source to overcome exponential demand for spectrum in fully connected multi-user networks. The new approach enables significant reduction in wavelength channels required, with a 67% decrease projected for larger user counts.
Researchers have developed a new technique called electro-optic sampling that uses ultrashort laser pulses to probe electric fields in crystals. This allows for the accurate capture of molecular spectra and detection of faint signals, providing profound insights into quantum physics.
Researchers at University of Rochester and RIT created an experimental quantum communications network to transmit information securely over long distances. The network uses single photons to enable secure communication without cloning or interception.
The 56th Annual Meeting of the American Physical Society's Division of Atomic, Molecular and Optical Physics will present new research on quantum computing, lasers, and Bose-Einstein condensates. Over 1,200 physicists from around the world will convene in Portland, Oregon, June 16-20.
Researchers create 3D photonic-crystal cavity to study ultrastrong coupling between light and matter, enabling faster and more energy-efficient quantum computing and communication technologies. The study paves the way for hyperefficient quantum processors, high-speed data transmission and next-generation sensors.
Physicists at Harvard SEAS have created a compact, on-chip mid-infrared pulse generator that can emit short bursts of light without external components. This device has the potential to speed up gas sensor development and create new medical imaging tools.
Researchers have directly observed a superradiant phase transition (SRPT) in a magnetic crystal, overcoming a long-standing limitation in theoretical physics. The phenomenon occurs when two groups of quantum particles fluctuate collectively without external triggers, forming a new state of matter with unique properties.
Researchers at CNR-INO observed capillary instability in an ultradilute quantum gas, creating a new form of matter with potential implications for industrial and biomedical applications. The study, published in Physical Review Letters, involved the use of imaging and optical manipulation techniques to create and analyze quantum droplets.
Harvard researchers have created a photon router that could plug into quantum networks to create robust optical interfaces for noise-sensitive microwave quantum computers. The breakthrough enables control of microwave qubits with optical signals generated many miles away, bridging the energy gap between microwave and optical photons.
A new bilayer metasurface, made of two stacked layers of titanium dioxide nanostructures, has been created by Harvard researchers. This device can precisely control the behavior of light, including polarization, and opens up a new avenue for metasurfaces.
Physicists use a new method to create an artificial crystal lattice by applying an electric voltage, allowing them to study the behavior of electrons in semiconductor materials. The technique enables insights into strong interactions and their effects on material properties.
A new study from the University of Eastern Finland investigates the behavior of photons at boundaries where material properties change rapidly over time. This research uncovers remarkable quantum optical phenomena that may enhance quantum technology and pave the way for an exciting emerging field: four-dimensional quantum optics.
Researchers measured high-precision transition frequencies and isotope mass ratios in ytterbium isotopes to confirm a nonlinearity anomaly. The team established a new limit for the existence of dark forces and gained insights into atomic nucleus deformation, opening doors for collaboration in physics research.
Scientists achieved a quantum imaging breakthrough with an ultra-thin nonlinear metasurface, combining ghost imaging and all-optical scanning methods to reconstruct images with exceptional resolution. This approach eliminates the need for bulky nonlinear crystals and enables compact, highly tunable platforms for quantum imaging.
Researchers at CNR-INO develop device to explore boundary between classical and quantum physics, enabling study of nanosystems in both regimes. The nano-oscillator traps glass spheres with specific frequencies, exhibiting counterintuitive quantum behaviors.
Researchers used quantum squeezing to improve gas sensing performance of optical frequency comb lasers, doubling the speed of detectors. The technique allowed for more precise measurements with fewer errors, enabling faster detection of molecules like hydrogen sulfide.
Researchers have developed a method to create photon pairs that achieves higher performance on a much smaller device using less energy. The new device, measuring just 3.4 micrometers thick, has the potential to enable significant gains in energy efficiency and technical capabilities of quantum devices.
The University of Michigan's QuPID project seeks to develop robust quantum systems for applications like environmental monitoring, GPS navigation and semiconductor chip quality control. The team aims to create design kits for global adaptation and simplify instrumentation needed to manipulate light properties.
The study creates ultra-stable thin-film polariton filters with exceptional angular stability, transmitting up to 98% of light, even at extreme viewing angles. This technology has enormous scientific and economic potential for applications in display technology, sensor technologies, biophotonics, and more.
German physicist Christian Schneider has been awarded a European Research Council Consolidator Grant to study the optical properties of two-dimensional materials. His team plans to develop experimental set-ups to investigate the unique properties of these materials, which could lead to new applications in quantum technologies.
The new issue of Optica Quantum features 10 research articles on quantum information science and technology. New methods for compensating scattering and aberrations in entangled photon systems have been proposed, and ultrafast nonlinear wave mixing spectroscopy schemes employing coherent light pulses and vacuum modes are being explored.
A team of researchers has developed a new way to study disorder in superconductors using terahertz pulses of light. They observed that the disorder in superconducting transport was significantly lower than previously thought, with stability up to 70% of the transition temperature.
Scientists at Chalmers University of Technology have successfully combined nonlinear and high-index nanophotonics in a single nanoobject, creating a disk-like structure with unique optical properties. The discovery has great potential for developing efficient and compact nonlinear optical devices.
A new graduate program at Rice University aims to equip students with skills needed to serve as leaders in quantum technology innovation. The program will provide interdisciplinary training to 30 students, combining expertise from quantum physics, optics, and nanotechnology.
Researchers have successfully achieved spin squeezing in a more accessible way, enabling precise measurements with quantum-enhanced metrology. This breakthrough may lead to new portable sensors for biomedical imaging and atomic clocks.
Researchers discovered that amyloid fibrils can harness quantum superradiant effects to mitigate oxidative stress, potentially transforming dementia treatments and understanding of Alzheimer's disease. This finding raises questions about the conventional view of amyloid's role in the disease.
Researchers at University of Konstanz shape electron matter wave into left- or right-handed coils of mass and charge. This achievement has implications for fundamental physics and potential applications in quantum optics, particle physics, and electron microscopy.
Researchers at Stanford University have developed a chip-scale Titanium-sapphire laser, four orders of magnitude smaller and three orders less expensive than traditional lasers. This breakthrough enables mass production on wafers, potentially thousands of lasers per disc, democratizing access to these powerful tools.
Scientists have demonstrated spontaneous parametric down-conversion in a liquid crystal, creating entangled photon pairs with high efficiency. The discovery enables flexible and electric-field-tunable quantum light sources.
A team of researchers successfully demonstrated the principles of gravity-mediated entanglement in a photonic quantum simulation. This breakthrough provides crucial insights into the nature of gravity and its interaction with quantum mechanics.
Researchers created a topological quantum simulator device that operates at room temperature, allowing for the study of fundamental nature of matter and light. The device has the potential to support the development of more efficient lasers.
Researchers have developed a new device that can determine photon pair properties in a single shot, improving precision and accuracy in quantum technologies. The metasurface-enabled multiport interferometer reduces size, weight, and power while increasing reliability.