Silicon photonic integrated circuit developed by ORNL scientists combines a bidirectionally pumped microring resonator with polarization splitter-rotators to generate broadband, high-fidelity polarization-entangled photons across 116 frequency-bin pairs compatible with existing fiber-optic networks, marking a significant advancement toward a scalable quantum internet.
A research team has achieved a breakthrough in quantum communication by implementing an eight-dimensional quantum superdense coding protocol on a 16-mode photonic chip, demonstrating an unprecedented channel capacity exceeding 3 bits through the generation of high-fidelity entangled quDit states and efficient Bell state measurements that distinguish eleven orthogonal states, significantly outperforming classical communication limits.
Researchers achieved a groundbreaking advancement in photonic quantum computing by implementing a boosted Bell-state measurement with a success probability of 69.3%, significantly exceeding the conventional 50% limit and demonstrating a threefold improvement in photon-loss tolerance for fault-tolerant fusion-based quantum computing.
A quantum photonics researcher who pioneered the miniaturization of cold atom trapping systems through integrated photonics at UC Santa Barbara, successfully developing the first photonic integrated 3D magneto-optical trap (PICMOT) that enables portable quantum technologies with applications in precision sensing, timekeeping, and quantum computing.
Time interfaces in materials with suddenly changing refractive indices create unique quantum optical phenomena including photon-pair production and destruction, tunable photon statistics, and opportunities for quantum state engineering.
The research demonstrates how quantum state tomography can reveal the full quantum characteristics of photoelectrons emitted from atoms, showing pure quantum states in helium but mixed states in argon due to spin-orbit coupling, thus bridging photoelectron spectroscopy with quantum information science.
Scientists at Leibniz University Hannover have developed a cost-effective quantum network security system using frequency-bin coding of light particles, which reduces complexity and equipment costs by 75% while enhancing security against quantum computer threats through a simplified single-detector design that enables dynamic, scalable quantum key distribution.
Researchers have presented an on-chip temporal multiplexing scheme utilizing Thin-Film Lithium Niobate (TFLN) photonics.
Physicists achieved a quantum computing breakthrough by successfully connecting separate quantum processors through photonic links, enabling quantum teleportation of logical gates between modules and demonstrating the first distributed quantum computer system, which could potentially scale up without the limitations of cramming millions of qubits into a single device.
A team has reported on the first demonstration of precise control of single photon states on an 11-dimensional continuously-coupled programmable waveguide array.
A research team has developed a groundbreaking, compact frequency comb generator using lithium tantalate technology that achieves 450 nm spectral coverage with over 2000 comb lines while reducing power requirements twentyfold, potentially transforming applications from robotics to environmental monitoring.
Researchers have developed a programmable photonic latch that enables faster optical data storage and processing by utilizing silicon photonics and wavelength division multiplexing, potentially revolutionizing AI applications and optical computing systems while overcoming traditional electronic memory limitations.
In a groundbreaking development published in Nature Communications, an international research team has created the first electrically pumped continuous-wave semiconductor laser compatible with silicon integration. The device, constructed from group IV elements using stacked layers of silicon-germanium-tin and germanium-tin, operates with minimal power requirements comparable to an LED.
Researchers at the University of Pennsylvania’s School of Engineering and Applied Science have developed a revolutionary photonic switch that transforms data transmission in fiber-optic networks. The switch, detailed in Nature Photonics, measures just 85 by […]
A research team has developed an efficient method to measure high-dimensional qudits (advanced versions of qubits that can hold more information and are more noise-resistant) encoded in quantum frequency combs on a single optical chip, marking a significant advancement for quantum networks and communication systems.
This research demonstrates a groundbreaking implementation of three-qubit Fredkin and Toffoli gates on a programmable quantum photonic chip, overcoming previous limitations of pre-entangled input states and bulk optics systems by using controlled Mach-Zehnder interferometers to enable independent input photons, marking a significant advance toward scalable quantum processors.
Researchers theoretically demonstrate how spin-orbit coupled Bose-Einstein condensates in optical cavities can generate topological optical transparencies with Dirac cones and edge-like states, potentially advancing quantum computation through enhanced light-matter interactions that exhibit phase transitions controllable via Raman detuning and atomic damping.
A novel architecture has been proposed for implementing high-fidelity deterministic quantum logic gates using photonic qubits that are dual-rail encoded.
For many applications making use of quantum effects, the light has to be in a certain state — namely a single photon state. But what is the best way of generating such single photon states? Researchers have now proposed an entirely new way.
An international team of researchers led by the University of Surrey has proven the existence of the fabled multi-photon Fano effect in an experiment.
A team of researchers has examined the potential of photonic processors for artificial intelligence applications.
French CEA-Leti has just announced the setup of a Quantum-Photonics Platform to ensure ultra-secure data for Finance, Energy, Defense and other industries. The Project will aim to build demonstrators for transmitting and receiving qubits and […]
Xanadu has just published a blueprint explaining path to scalable fault-tolerant quantum computing on millions of qubits with photonics.
Sheffield University spin-out AegiQ has raised £1.4m (€1.5m) to build a semiconductor platform for quantum communications.