575 citations · 1.5k across the 27 of their papers we have counts for
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Engineering Giant Nonlinearities in Quantum Nanosystems
Kurt Jacobs, Andrew Landahl
We describe a method to engineer giant nonlinearities in, and probes to measure nonlinear observables of, mesoscopic quantum resonators. This involves tailoring the Hamiltonian of…
Quantum Feedback Control: How to use Verification Theorems and Viscosity Solutions to Find Optimal Protocols
Kurt Jacobs, Alireza Shabani
While feedback control has many applications in quantum systems, finding optimal control protocols for this task is generally challenging. So-called "verification theorems" and "vi…
Engineering Superposition States and Tailored Probes for Nano-resonators Via Open-Loop Control
Kurt Jacobs, Lin Tian, Justin Finn
We show that a nano-resonator can be prepared in mesoscopic-superposition states merely by monitoring a qubit coupled to the square of the resonators position. This works for therm…
A Monte Carlo Method for Modeling Thermal Damping: Beyond the Brownian-Motion Master Equation
Kurt Jacobs
The "standard" Brownian motion master equation, used to describe thermal damping, is not completely positive, and does not admit a Monte Carlo method, important in numerical simula…
Locally Optimal Control of Quantum Systems with Strong Feedback
Alireza Shabani, Kurt Jacobs
For quantum systems with high purity, we find all observables that, when continuously monitored, maximize the instantaneous reduction in the von Neumann entropy. This allows us to…
Back-action evasion and squeezing of a mechanical resonator using a cavity detector
A. A. Clerk, F. Marquardt, K. Jacobs
We study the quantum measurement of a cantilever using a parametrically-coupled electromagnetic cavity which is driven at the two sidebands corresponding to the mechanical motion.…