5 papers
Predicting properties of Scrooge ensembles with high accuracy and low sample complexity
Yue Wu, Yuzhi Tong, Helen Propson +2
The Scrooge ensemble associated with a density matrix is the maximally random ensemble whose average density matrix is . It has attracted growing interest for its applicatio…
Near-optimal quantum metrology with few-qubit measurements
Liang Mao, Senrui Chen, Hsin-Yuan Huang +2
Quantum metrology, which addresses parameter estimation in quantum systems, has broad applications across science and technology. Conventional metrology protocols for multi-qubit s…
Exact Hilbert-space ergodicity from continuous monitoring
Yue Wu, Yuzhi Tong, Liang Mao +1
Quantum evolution is generally expected to drive a quantum many-body system toward equilibrium. This expectation is often justified by the Hilbert-space ergodicity of generic quant…
Random unitaries that conserve energy
Liang Mao, Laura Cui, Thomas Schuster +1
Random unitaries sampled from the Haar measure serve as fundamental models for generic quantum many-body dynamics. Under standard cryptographic assumptions, recent works have const…
Random unitaries from Hamiltonian dynamics
Laura Cui, Thomas Schuster, Liang Mao +2
The nature of randomness and complexity growth in systems governed by unitary dynamics is a fundamental question in quantum many-body physics. This problem has motivated the study…