81 citations · 140 across the 8 of their papers we have counts for
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Agentic AI for Scientific Reasoning in Autonomous Quantum Sensing Experiments
Takuya Isogawa, Ryotaro Okabe, Nutdech Phadetsuwannukun +2
We implement an agentic AI workflow built around a large language model (LLM) agent for autonomous experiments with nitrogen-vacancy (NV) centers in diamond. NV centers are a widel…
Numerically Optimizing Shortcuts to Adiabaticity: A Hybrid Control Strategy
Bo Xing, Jesús G. Parejo, Sofía Martínez-Garaot +2
Achieving fast, excitation-free quantum control is a vital challenge in modern quantum technologies. In many cases, shortcuts to adiabaticity enable fast adiabatic-like protocols,…
Optimal Control of Coupled Sensor-Ancilla Qubits for Multiparameter Estimation
Ayumi Kanamoto, Takuya Isogawa, Shunsuke Nishimura +2
Designing optimal control for multiparameter quantum sensing is essential for approaching the ultimate precision limits. However, analytical solutions are generally available only…
Interferometry of quantum correlation functions to access quasiprobability distribution of work
Santiago Hernández-Gómez, Takuya Isogawa, Alessio Belenchia +4
The Kirkwood-Dirac quasiprobability distribution, intimately connected with the quantum correlation function of two observables measured at distinct times, is becoming increasingly…
Energy exchange statistics and fluctuation theorem for non-thermal asymptotic states
Santiago Hernández-Gómez, Francesco Poggiali, Paola Cappellaro +4
Exchange energy statistics between two bodies at different thermal equilibrium obey the Jarzynski-Wójcik fluctuation theorem. The corresponding energy scale factor is the differenc…
Optimal control of a quantum sensor: A fast algorithm based on an analytic solution
S. Hernández-Gómez, F. Balducci, G. Fasiolo +3
Quantum sensors can show unprecedented sensitivities, provided they are controlled in a very specific, optimal way. Here, we consider a spin sensor of time-varying fields in the pr…
Optimal control for one-qubit quantum sensing
F. Poggiali, P. Cappellaro, N. Fabbri
Quantum systems can be exquisite sensors thanks to their sensitivity to external perturbations. This same characteristic also makes them fragile to external noise. Quantum control…
Measurement of the excited-state transverse hyperfine coupling in NV centers via dynamic nuclear polarization
F. Poggiali, P. Cappellaro, N. Fabbri
Precise knowledge of a quantum system's Hamiltonian is a critical pre-requisite for its use in many quantum information technologies. Here, we report a method for the precise chara…