A scalable numerical framework simulates laser cooling of large 3D ion crystals in Penning traps, identifying axial mode additions and prolate geometries that achieve sub-1 mK perpendicular temperatures with simplified beam setups.
Measuring out-of-time-order correlations and multiple quantum spectra in a trapped ion quantum magnet
4 Pith papers cite this work. Polarity classification is still indexing.
4
Pith papers citing it
abstract
Controllable arrays of ions and ultra-cold atoms can simulate complex many-body phenomena and may provide insights into unsolved problems in modern science. To this end, experimentally feasible protocols for quantifying the buildup of quantum correlations and coherence are needed, as performing full state tomography does not scale favorably with the number of particles. Here we develop and experimentally demonstrate such a protocol, which uses time reversal of the many-body dynamics to measure out-of-time-order correlation functions (OTOCs) in a long-range Ising spin quantum simulator with more than 100 ions in a Penning trap. By measuring a family of OTOCs as a function of a tunable parameter we obtain fine-grained information about the state of the system encoded in the multiple quantum coherence spectrum, extract the quantum state purity, and demonstrate the buildup of up to 8-body correlations. Future applications of this protocol could enable studies of many-body localization, quantum phase transitions, and tests of the holographic duality between quantum and gravitational systems.
citation-role summary
background 2
citation-polarity summary
fields
quant-ph 4years
2026 4verdicts
UNVERDICTED 4roles
background 2polarities
background 2representative citing papers
Unitary designs emerge from the temporal ensemble of two chaotic Hamiltonian evolutions separated by a random Pauli operation, based on the universal Pauli spectrum.
Post-selection probability and fidelity of bidirectional teleportation are expressed via the Loschmidt echo, revealing initial-state dependence of fidelity and stability of probability in integrable models.
Reviews the many-body semiclassical propagator and its use in explaining quantum chaos phenomena such as spectral correlations, eigenstate morphology, weak localization, and out-of-time-order correlators in indistinguishable particle systems.
citing papers explorer
-
Optimizing Doppler laser cooling protocols for quantum sensing with 3D ion crystals in a Penning trap
A scalable numerical framework simulates laser cooling of large 3D ion crystals in Penning traps, identifying axial mode additions and prolate geometries that achieve sub-1 mK perpendicular temperatures with simplified beam setups.
-
Unitary Designs from Two Chaotic Hamiltonians and a Random Pauli Operation
Unitary designs emerge from the temporal ensemble of two chaotic Hamiltonian evolutions separated by a random Pauli operation, based on the universal Pauli spectrum.
-
Post-Selection Probability and Fidelity of Bidirectional Teleportation
Post-selection probability and fidelity of bidirectional teleportation are expressed via the Loschmidt echo, revealing initial-state dependence of fidelity and stability of probability in integrable models.
-
Quantum chaos in many-body systems of indistinguishable particles
Reviews the many-body semiclassical propagator and its use in explaining quantum chaos phenomena such as spectral correlations, eigenstate morphology, weak localization, and out-of-time-order correlators in indistinguishable particle systems.