In U(1)-symmetric random circuits, initial states with lower stabilizer Rényi entropy generate nonstabilizerness faster than those with higher entropy, with the effect also depending on spatial charge structure and extending to SU(2) circuits and Hamiltonian dynamics.
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Stabilizer Rényi entropy of 3-uniform hypergraph states equals a matrix-rank expression, cutting computation from exponential in 3N to polynomial in N times exponential in N.
A quantum emitter in a waveguide sorts single- and two-photon light with 62% success, enabling Bell state measurements at 57% post-selected probability that exceeds the 50% linear-optics limit.
A nonlinear criterion detects coherence transfer in quantum networks with only two measurements of network-state populations, remaining valid even with uncharacterized checkpoint nodes, and is experimentally shown in four- and six-photon entanglement networks.
Ground states of a tuned spin-1 XXZ chain in the Haldane phase enable high-fidelity single-qubit gates via measurement-based quantum computation.
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Nonstabilizerness Mpemba Effects
In U(1)-symmetric random circuits, initial states with lower stabilizer Rényi entropy generate nonstabilizerness faster than those with higher entropy, with the effect also depending on spatial charge structure and extending to SU(2) circuits and Hamiltonian dynamics.
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Stabilizer R\'enyi entropy of 3-uniform hypergraph states
Stabilizer Rényi entropy of 3-uniform hypergraph states equals a matrix-rank expression, cutting computation from exponential in 3N to polynomial in N times exponential in N.
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Photon Sorting with a Quantum Emitter
A quantum emitter in a waveguide sorts single- and two-photon light with 62% success, enabling Bell state measurements at 57% post-selected probability that exceeds the 50% linear-optics limit.
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Coherence Transfer in Quantum Networks
A nonlinear criterion detects coherence transfer in quantum networks with only two measurements of network-state populations, remaining valid even with uncharacterized checkpoint nodes, and is experimentally shown in four- and six-photon entanglement networks.
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Measurement-Based Quantum Computation Using the Spin-1 XXZ Model with Uniaxial Anisotropy
Ground states of a tuned spin-1 XXZ chain in the Haldane phase enable high-fidelity single-qubit gates via measurement-based quantum computation.