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quant-ph2024
Quantum state preparation with optimal T-count
David Gosset, Robin Kothari, Kewen Wu
How many T gates are needed to approximate an arbitrary -qubit quantum state to within error ? Improving prior work of Low, Kliuchnikov, and Schaeffer, we show that…
quant-ph2024★ 17 cited
Triply efficient shadow tomography
Robbie King, David Gosset, Robin Kothari +1
Given copies of a quantum state , a shadow tomography protocol aims to learn all expectation values from a fixed set of observables, to within a given precision . We say that…