Subj : Finding the flux of quantum technology To : All From : ScienceDaily Date : Wed Jul 05 2023 22:30:22 Finding the flux of quantum technology Date: July 5, 2023 Source: University of Pittsburgh Summary: We interact with bits and bytes everyday -- whether that's through sending a text message or receiving an email. There's also quantum bits, or qubits, that have critical differences from common bits and bytes. These photons -- particles of light -- can carry quantum information and offer exceptional capabilities that can't be achieved any other way. Unlike binary computing, where bits can only represent a 0 or 1, qubit behavior exists in the realm of quantum mechanics. Through "superpositioning," a qubit can represent a 0, a 1, or any proportion between. This vastly increases a quantum computer's processing speed compared to today's computers. Experts are now investigating the inside of a quantum-dot-based light emitter. Facebook Twitter Pinterest LinkedIN Email ========================================================================== FULL STORY ========================================================================== We interact with bits and bytes everyday -- whether that's through sending a text message or receiving an email. There's also quantum bits, or qubits, that have critical differences from common bits and bytes. These photons -- particles of light -- can carry quantum information and offer exceptional capabilities that can't be achieved any other way. Unlike binary computing, where bits can only represent a 0 or 1, qubit behavior exists in the realm of quantum mechanics. Through "superpositioning," a qubit can represent a 0, a 1, or any proportion between. This vastly increases a quantum computer's processing speed compared to today's computers. "Learning about the capabilities of qubits has been a driving force for the emerging field of quantum technologies, opening up new and unexplored applications like quantum communication, computing and sensing," said Hong Koo Kim, Professor of Electrical and Computer Engineering at the University of Pittsburgh Swanson School of Engineering. Quantum technologies are important for a number of fields, like for banks protecting financial information or providing researchers with the speed needed to mimic all aspects of chemistry. And through quantum "entanglement," qubits could "communicate" across vast distances as a single system. Kim and his graduate student, Yu Shi, made a discovery that may help quantum technology take a quantum leap. It begins with a single photon Photon-based quantum technologies rely on single photon sources that can emit individual photons. These single photons can be generated from nanometer scale semiconductors, more commonly known as quantum dots. Similar to how microwave antennas broadcast mobile phone signals, a quantum dot acts as an antenna that radiates light. "By performing rigorous analysis, we discovered that a quantum dot emitter - - or a nanometer scale dipole antenna -- traps a large amount of energy," Kim explained. "The outer regime operation of a dipole emitter is well understood, but this is really the first time a dipole has been studied on the inside." Photons from those quantum dots come out with handedness, like us a right- handed or left-handed person, and quantum information is carried by this handedness of individual photons. As such, sorting them out to different pathways is an important task for quantum information processing. Kim's team has developed a new way of separating differently-handed photons and efficiently harvesting them for further processing down the road. "The findings of this work are expected to contribute to developing high-speed single photon sources, a critical component needed in quantum photonics," Kim said. * RELATED_TOPICS o Matter_&_Energy # Quantum_Physics # Quantum_Computing # Physics # Spintronics o Computers_&_Math # Quantum_Computers # Computers_and_Internet # Spintronics_Research # Hacking * RELATED_TERMS o Quantum_computer o Quantum_entanglement o Quantum_number o Wave-particle_duality o Quantum_tunnelling o Quantum_dot o Introduction_to_quantum_mechanics o Linus_Pauling ========================================================================== Print Email Share ========================================================================== ****** 1 ****** ***** 2 ***** **** 3 **** *** 4 *** ** 5 ** Breaking this hour ========================================================================== * Why_Birds_Ancestors_Lived;_Other_Dinosaurs_Died * Dissolving_Cardiac_Device_Treats_Heart_Disease * Webb_Locates_Dust_Reservoirs_in_Two_Supernovae * Earth_Formed_from_Dry,_Rocky_Building_Blocks * Ancient_Volcanic_Activity_On_Moon's_Dark_Side * Highly_Conductive_Metallic_Gel_for_3D_Printing * Potent_Greenhouse_Gas_Could_Be_Abated_Today * Polymer_Brains_for_Artificial_Neural_Networks * Early_Apex_Predator_Sought_Soft_Over_... * Time_in_Universe_Once_Flowed_Five_Times_Slower Trending Topics this week ========================================================================== SPACE_&_TIME Black_Holes Astrophysics NASA MATTER_&_ENERGY Biochemistry Optics Petroleum COMPUTERS_&_MATH Communications Educational_Technology Computer_Modeling ========================================================================== Strange & Offbeat ========================================================================== SPACE_&_TIME Quasar_'Clocks'_Show_Universe_Was_Five_Times_Slower_Soon_After_the_Big_Bang First_'Ghost_Particle'_Image_of_Milky_Way Gullies_on_Mars_Could_Have_Been_Formed_by_Recent_Periods_of_Liquid_Meltwater, Study_Suggests MATTER_&_ENERGY Researchers_Create_Highly_Conductive_Metallic_Gel_for_3D_Printing Growing_Bio-Inspired_Polymer_Brains_for_Artificial_Neural_Networks Displays_Controlled_by_Flexible_Fins_and_Liquid_Droplets_More_Versatile, Efficient_Than_LED_Screens COMPUTERS_&_MATH AI_Tests_Into_Top_1%_for_Original_Creative_Thinking Turning_Old_Maps_Into_3D_Digital_Models_of_Lost_Neighborhoods NeuWS_Camera_Answers_'Holy_Grail_Problem'_in_Optical_Imaging Story Source: Materials provided by University_of_Pittsburgh. Note: Content may be edited for style and length. ========================================================================== Journal Reference: 1. Yu Shi, Hong Koo Kim. Spin texture and chiral coupling of circularly polarized dipole field. Nanophotonics, 2023; 12 (1): 129 DOI: 10.1515/ nanoph-2022-0581 ========================================================================== Link to news story: https://www.sciencedaily.com/releases/2023/07/230705143012.htm --- up 1 year, 18 weeks, 2 days, 10 hours, 50 minutes * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3) .