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Quantum ComputingQuantum computers that can be utilized in practical settings are steadily moving closer to becoming a reality. These machines can, in principle, solve problems and perform tasks in seconds that would take classical computers centuries.
Traditional computers store and process information using fundamental units, which can be in either an on (1) or off (0) state. Trillions of units are processed during computing tasks, switching back and forth between these states. On the other hand, a quantum computer's units—called qubits—can be in both states simultaneously. They can also be linked together, enabling more efficient manipulation and processing of these units. However, qubits are incredibly fragile and prone to introducing errors when the simultaneous states break down.
Scientists have employed various techniques to develop functioning quantum computers. The most common approach relies on superconducting qubits—microscopic circuits that behave like artificial atoms—which both Google and IBM have demonstrated. Other approaches utilize photons—particles of light—ions suspended in electric fields, and exotic states of matter known as Majorana particles.Explore Quantum Computing
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As of 2025, the internet is entering its fourth phase, with three more to goSince the inception of the internet as a tool for connecting teams of researchers, technological and infrastructure advancements have progressively increased connectivity. Connections between computers, mobile devices, all devices, and now AI agents will be succeeded by an internet that integrates perception and the senses toward an eventual quantum internet. IEEE SpectrumHuman teleportation through quantum principles raises questions about identityThrough quantum entanglement, particles have been "teleported" by measuring their state in one location and effectively transferring that state to a new location. Doing so for the particles that make up humans would destroy the state of the original particles, killing the person, and effectively creating a clone. Curious CasesExplore an optical table to create quantum physics experimentsThis interactive teaches users to create quantum experiments through lessons resembling video game levels. Users can also use the virtual lab to visualize landmark quantum experiments like entanglement, teleportation, cryptography, and quantum computing, or create their own experiments with drag-and-drop elements. Quantum FlytrapQuantum computers can simulate nature more effectively than classical computersOrdinary computers struggle to simulate quantum fields due to entanglement, but systems built from those elements can model the complexity. Systems using particle in more than two states—qudits—have successfully modeled 2D electromagnetic fields and done so more efficiently. Quanta MagazineQuantum mechanical principles are responsible for chemical propertiesBesides quantization, the wave-particle duality, and probabilistic features, quantum theory's mathematics introduces the exclusion principle, quantum tunneling, quantum entanglement, and other phenomena foreign to our everyday experiences. Some suggest that all possibilities for a quantum system may also occur across the multiverse. The Science of Everything PodcastQubits let quantum computers process massive datasets all at onceThe quantum phenomena of superposition and entanglement enable qubits to act in 0 and 1 binary states simultaneously and influence each other instantly. These features give quantum computers incredible power, though keeping them stable is a major challenge. 1440Entanglement creates correlations between particles across vast distancesQuantum entanglement occurs when two or more particles become linked, resulting in correlated properties. Scientists have ruled out hidden variables and have shown that these correlations depend on how and when measurements are made—not on faster-than-light communication. California Institute of TechnologyHow entanglement lies at the heart of quantum computingTheoretical physicist and mathematician Frank Wilczek boils down the complex notion of quantum entanglement into this reasonably understandable summary. Wilczek discusses the concepts of quantum entanglement and how it relates to other ideas like the Many-Worlds Interpretation (MWI) of quantum mechanics. What sounds a bit "science-fictiony" can have actual real-world and concrete applications. Quanta MagazineQuantum tunneling allows particles to pass through classically impenetrable barriersFirst described in 1928, the phenomenon is the result of probability waves, which represent the location of particles in space as extended objects. Just as sound waves can reflect off of and pass through barriers, these probability waves dictate that solid matter has a chance at passing through obstacles. Quanta MagazineOne of Einstein's papers challenged quantum theory but helped confirm entanglementIn 1935, Einstein suggested that quantum mechanics was incomplete due to its strange implications about entangled particles. Their challenge led to decades of experiments that eventually proved distant particles could affect each other instantly. TED Talks
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