Measuring the Loschmidt amplitude for finite-energy properties of the Fermi-Hubbard model on an ion-trap quantum computer

K Hémery, K Ghanem, E Crane, SL Campbell… - PRX Quantum, 2024 - APS
Calculating the equilibrium properties of condensed-matter systems is one of the promising
applications of near-term quantum computing. Recently, hybrid quantum-classical time …

Phase-sensitive quantum measurement without controlled operations

Y Yang, A Christianen, MC Bañuls, DS Wild, JI Cirac - Physical Review Letters, 2024 - APS
Many quantum algorithms rely on the measurement of complex quantum amplitudes.
Standard approaches to obtain the phase information, such as the Hadamard test, give rise …

Heisenberg-limited metrology with perturbing interactions

C Yin, A Lucas - Quantum, 2024 - quantum-journal.org
We show that it is possible to perform Heisenberg-limited metrology on GHZ-like states, in
the presence of generic spatially local, possibly strong interactions during the measurement …

Hybrid Oscillator-Qubit Quantum Processors: Simulating Fermions, Bosons, and Gauge Fields

E Crane, KC Smith, T Tomesh, A Eickbusch… - arXiv preprint arXiv …, 2024 - arxiv.org
We develop a hybrid oscillator-qubit processor framework for quantum simulation of strongly
correlated fermions and bosons that avoids the boson-to-qubit mapping overhead …

Direct Estimation of the Density of States for Fermionic Systems

ML Goh, B Koczor - arXiv preprint arXiv:2407.03414, 2024 - arxiv.org
Simulating time evolution is one of the most natural applications of quantum computers and
is thus one of the most promising prospects for achieving practical quantum advantage …

Simulating Floquet scrambling circuits on trapped-ion quantum computers

K Seki, Y Kikuchi, T Hayata, S Yunoki - arXiv preprint arXiv:2405.07613, 2024 - arxiv.org
Complex quantum many-body dynamics spread initially localized quantum information
across the entire system. Information scrambling refers to such a process, whose simulation …