# Browse Physics

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Quantum computers will need a gargantuan increase in the number of gates to push the current boundaries in chemistry calculations.

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Multiparticle entanglement has been difficult to characterize, but a new method provides a way to assess this with measurements of the total spin.

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A new experiment uses nonlinear optics to convert a faint source of correlated photons to higher frequency, conserving their “squeezed” quantum state in the process.

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A technique for decoding the state of a photon is able to capture the potentially useful information carried by quantum fluctuations.

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Quantum information lost after a measurement can be recovered using quantum error correction methods.

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Theoretical calculations describe the behavior of a large quantum circuit by taking advantage of certain symmetrical relationships between superconducting elements.