5 papers
Tight Bounds for Purity and Product Testing from Partial Transposition
Oren Akresh, Jacob Beckey
Coherent measurements across multiple copies of an unknown quantum state can substantially reduce the number of samples required to learn its properties, but remain experimentally…
An Optimal Analysis of the Product Test
Jacob Beckey, Fernando Granha Jeronimo, Pei Wu
Product testing, i.e., deciding whether a pure multipartite quantum state is fully unentangled across a specified tensor decomposition, serves as a bridge between quantum property…
Localizing entanglement in high-dimensional states
Christopher Vairogs, Akanksha Chablani, Leo Lee +3
In this work, we study the asymptotic behavior of protocols that localize entanglement in large multi-qubit states onto a subset of qubits by measuring the remaining qubits. We use…
Product testing with single-copy measurements
Jacob Beckey, Luke Coffman, Ariel Shlosberg +2
In this work, we study the sample complexity of two variants of product testing when restricted to single-copy measurements. In particular, we consider both bipartite product testi…
Impulse measurements enhanced with squeezed readout light
Tsai-Chen Lee, Jacob L. Beckey, Giacomo Marocco +1
We quantify how squeezed light can reduce quantum measurement noise to levels below the standard quantum limit in impulse measurements with mechanical detectors. The broadband natu…