Demonstration of quantum advantage by a joint detection receiver for optical communications using quantum belief propagation on a trapped-ion device

no code implementations • 25 Feb 2021 • Conor Delaney, Kaushik P. Seshadreesan, Ian MacCormack, Alexey Galda, Saikat Guha, Prineha Narang

Demonstrations of quantum advantage have largely focused on computational speedups and on quantum simulation of many-body physics, limited by fidelity and capability of current devices.

Quantum Physics Optics

Operator and entanglement growth in non-thermalizing systems: many-body localization and the random singlet phase

no code implementations • 22 Jan 2020 • Ian MacCormack, Mao Tian Tan, Jonah Kudler-Flam, Shinsei Ryu

We characterize the growth and spreading of operators and entanglement in two paradigmatic non-thermalizing phases - the many-body localized phase and the random singlet phase - using out-of-time-ordered correlators, the entanglement contour, and operator entanglement.

Strongly Correlated Electrons Disordered Systems and Neural Networks Statistical Mechanics High Energy Physics - Theory