Quantum channel tomography query complexity transitions from Heisenberg scaling Θ(r d1 d2 / ε) at dilation rate τ=1 to classical scaling Θ(r d1 d2 / ε²) for τ ≥ 1+Ω(1).
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Derives closed-form intervals for compatible population changes from calibrated qubit readouts and identifies cases where stable data permit multiple population interpretations.
Nonclassical area δ from the tomogram and g^(2)(0) serve as direct experimental signatures of quantum synchronization in the driven van der Pol oscillator.
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Quantum channel tomography: optimal bounds and a Heisenberg-to-classical phase transition
Quantum channel tomography query complexity transitions from Heisenberg scaling Θ(r d1 d2 / ε) at dilation rate τ=1 to classical scaling Θ(r d1 d2 / ε²) for τ ≥ 1+Ω(1).
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Stable Qubit Readout and the Identifiability of Population Change
Derives closed-form intervals for compatible population changes from calibrated qubit readouts and identifies cases where stable data permit multiple population interpretations.
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Characterizing quantum synchronization in the van der Pol oscillator via tomogram and photon correlation
Nonclassical area δ from the tomogram and g^(2)(0) serve as direct experimental signatures of quantum synchronization in the driven van der Pol oscillator.