8 papers · 1 filter
To Cool, or Not to Cool? Displacement Sensing with Hot Quantum States
Piotr T. Grochowski
Quantum-enhanced displacement sensing with bosonic systems is typically formulated assuming that the oscillator is cooled close to its ground state before nonclassical probe prepar…
Quantum Non-Gaussian State Preparation of Levitated Particles via Time-Dependent Control of Weakly Nonharmonic Hybrid Potentials
Piotr T. Grochowski, Oriol Romero-Isart
Levitated high-mass quantum systems provide access to unprecedented regimes in both fundamental science and technological applications. However, deterministic generation and manipu…
Distributed Phase-Insensitive Displacement Sensing
Piotr T. Grochowski, Matteo Fadel, Radim Filip
Distributed quantum sensing leverages quantum correlations among multiple sensors to enhance the precision of parameter estimation beyond classical limits. Most existing approaches…
Optimal Phase-Insensitive Force Sensing with Non-Gaussian States
Piotr T. Grochowski, Radim Filip
Quantum metrology enables sensitivity to approach the limits set by fundamental physical laws. Even a single continuous mode offers enhanced precision, with the improvement scaling…
Quantum control of continuous systems via nonharmonic potential modulation
Piotr T. Grochowski, Hannes Pichler, Cindy A. Regal +1
We present a theoretical proposal for preparing and manipulating a state of a single continuous-variable degree of freedom confined to a nonharmonic potential. By utilizing optimal…
Wigner Analysis of Particle Dynamics and Decoherence in Wide Nonharmonic Potentials
Andreu Riera-Campeny, Marc Roda-Llordes, Piotr T. Grochowski +1
We derive an analytical expression of a Wigner function that approximately describes the time evolution of the one-dimensional motion of a particle in a nonharmonic potential. Our…