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(Phys.org) —While quantum states are typically referred to as particles or waves, this is not actually the case. Rather, quantum states have complementary discrete particlelike and continuous wavelike properties that emerge based on the experimental or observational context. In other words, when used to describe quantum states the terms particle and wave are convenient but inaccurate metaphors. This is an important consideration in quantum computing, where photons are used as units of quantum information known as quantum bits, or qubits, which due to quantum superposition (and therefore unlike classical bits) can simultaneously exist in two states. That said, current attempts to devise quantum computers that process photonic qubits universally using particle detectors to count photons and optical circuits to capture quantum wave evolution have been stymied by the fact that ancilla states – fixed qubit states used in reversible quantum computing as input to a gate to give that gate a more specific logic function – consist of many highly-entangled photons, thereby exceeding experimental capabilities. (Entanglement is a uniquely-quantum state in which two or more interacting particles are said to be hypercorrelated – meaning that the state of each individual particle cannot be described independently, and that a change in a property of one particle is instantly reflected in its entangled partner regardless of the distance separating them.)
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(Phys.org) —While quantum states are typically referred to as particles or waves, this is not actually the case. Rather, quantum states have complementary discrete particlelike and continuous wavelike properties that emerge based on the experimental or observational context. In other words, when used to describe quantum states the terms particle and wave are convenient but inaccurate metaphors. This is an important consideration in quantum computing, where photons are used as units of quantum information known as quantum bits, or qubits, which due to quantum superposition (and therefore unlike classical bits) can simultaneously exist in two states. That said, current attempts to devise quantum computers that process photonic qubits universally using particle detectors to count photons and optical circuits to capture quantum wave evolution have been stymied by the fact that ancilla states – fixed qubit states used in reversible quantum computing as input to a gate to give that gate a more specific logic function – consist of many highly-entangled photons, thereby exceeding experimental capabilities. (Entanglement is a uniquely-quantum state in which two or more interacting particles are said to be hypercorrelated – meaning that the state of each individual particle cannot be described independently, and that a change in a property of one particle is instantly reflected in its entangled partner regardless of the distance separating them.)
Zazzle Space market place
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