5 papers
Macroscopic Quantum Interference of the Center-of-Mass Motion of Levitated Superconducting Microparticles enabled by Magnetic Higher-Order Traps
Jaume Cunill-Subiranas, Fabian Resare, Suocheng Zhao +4
We show how magnetostatic higher-order multipole traps can be used to generate macroscopic quantum interference of the motion of levitated superconducting microparticles. An approp…
Optimizing confidence in negative-partial-transpose-based entanglement criteria
Lydia A. Kanari-Naish, Jack Clarke, Sofia Qvarfort +1
A key requirement of any separable quantum state is that its density matrix has a positive partial transpose. For continuous bipartite quantum states, violation of this condition m…
Metrology of Gravitational Effects with Mechanical Quantum Systems
Daniel Braun, Marta Maria Marchese, Stefan Nimmrichter +3
Mechanical quantum systems, such as resonators and levitated particles, offer unique opportunities for quantum metrology. Particularly, their significant mass and quantum-level con…
Sensing force gradients with cavity optomechanics while evading backaction
Elisabet K. Arvidsson, Ermes Scarano, August K. Roos +2
We study force-gradient sensing with a coherently driven mechanical resonator and phase-sensitive detection of motion through the two-tone backaction evading measurement of cavity…
Massive quantum systems as interfaces of quantum mechanics and gravity
Sougato Bose, Ivette Fuentes, Andrew A. Geraci +7
The traditional view from particle physics is that quantum gravity effects should only become detectable at extremely high energies and small length scales. Due to the significant…