Year: 2025
Type: article
Abstract: Controllable nonlinear quantum interactions are a much sought after target for modern quantum technologies. They are typically difficult and costly to engineer for bespoke purposes. However controllable nonlinearities may have always been in reach via the natural and fundamental forces between quantum particles. The Coulomb interaction between charged particles is the simplest example. We show that after eliminating the harmonic part of the Coulomb force by an auxiliary linear force, the remaining reciprocal nonlinear part results in a directly observable non-reciprocal nonlinear effect: increase of the signal-to-noise ratio (SNR) of the coherent displacement of one particle, driven by the position noise, or uncertainty in quantum regime, in another particle. This essential evidence of nonlinear forces is present across large ranges of trap frequency and mass scales, as well as visible in both stochastic and quantum regimes.
Source: Communications Physics
Authors: Luca Ornigotti, Darren W. Moore, Radim Filip
Institution: Palacký University Olomouc
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,990
Awards: G1077886192, G2444280304, G2678520069, G3298403960, G3500007747, G375632936, G434337789, G4345038503, G5032364540, G5271502856, QuantERA ERA-NET Cofund in Quantum Technologies, Sequential parametric amplification: quantum technology with multimode light, G575169067, QuantERA II ERA-NET Cofund in Quantum Technologies, G8653124682, Semiclassical Nonlinear Electro-Optical Levitation
OpenAlex ID: W4410257942