From the 2 of 9 linked papers with an AI index.
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When quantum thermal states look classical
Harald Putterman, Alexander Zlokapa, Jordan Cotler
The paper analyzes how quantum Gibbs states retain classical properties such as lack of entanglement and magic at finite temperatures, establishing a hierarchy of classical‑to‑quan…
Restrictions on non-Clifford fault tolerance and ruling out beyond-SQL quantum metrology
Constantin Cedillo Vayson de Pradenne, Ishaan Kannan, Harald Putterman +1
The paper proves limits on transversal non‑Clifford gates in stabilizer codes, showing these constraints prevent fault‑tolerant transversal sensing that would surpass the standard…
Learning Hamiltonians at Long Times
Constantin Cedillo Vayson de Pradenne, Jordan Cotler, Hsin-Yuan Huang
We study the problem of learning an unknown -qubit Hamiltonian from for a single time , where may be arbitrarily large. For broad families of local Ham…
Exponential speedups in fault-tolerant processing of quantum experiments
Ishaan Kannan, Harald Putterman, Jordan Cotler
Quantum information processing has the potential to substantially enhance how we learn from physical experiments, but coupling a quantum processor to an experimental sample introdu…
Quantum Advantage for Sensing Properties of Classical Fields
Jordan Cotler, Daine L. Danielson, Ishaan Kannan
Modern precision experiments often probe unknown classical fields with bosonic sensors in quantum-noise-limited regimes where vacuum fluctuations limit conventional readout. We int…
Noisy Quantum Learning Theory
Jordan Cotler, Weiyuan Gong, Ishaan Kannan
We develop a framework for learning from noisy quantum experiments in which fault-tolerant devices access uncharacterized systems through noisy couplings. Introducing the complexit…