Quantum networks being tested today use photons, or particles of light, to communicate quantum states over long distances.
or entanglement, objects have to be very small or very cold.
Quantum computers are a promising approach for carrying out select tasks like optimizing materials design or searching in a database. This is due to unique features that qubits—the basic units of quantum memory—have, like superposition, or the ability to be zero and one at the same time, as well as entanglement. However, qubits are extremely sensitive and can be easily disrupted by noise from the environment, causing them to lose their special properties.
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