Related papers: Three-Dimensional and Selective Displacement Sensing of a Levitated Nanoparticle via Spatial Mode Decomposition

Three-Dimensional and Selective Displacement Sensing of a Levitated Nanoparticle via Spatial Mode Decomposition

URL: http://arxiv.org/abs/2409.08827v2
Date: Tue, 5 Nov 2024 07:13:49 GMT
Title: Three-Dimensional and Selective Displacement Sensing of a Levitated Nanoparticle via Spatial Mode Decomposition
Authors: Thomas Dinter, Reece Roberts, Thomas Volz, Mikolaj K. Schmidt, Cyril Laplane,
Abstract summary: technique relies on the spatial mode decomposition of the light scattered by the levitated object. Measurement efficiencies of (eta_mathrmtot_x, eta_mathrmtot_y, eta_mathrmtot_z) = (0.14, 0.16, 0.32)$ $>$ 1/9, which should enable the 3D motional quantum ground state of a levitated optomechanical system.
Score: 0.0
License: http://creativecommons.org/licenses/by-nc-sa/4.0/
Abstract: We propose and experimentally demonstrate a novel detection method that significantly improves the precision of real-time measurement of the three-dimensional displacement of a levitated dipolar scatterer. Our technique relies on the spatial mode decomposition of the light scattered by the levitated object, allowing us to simultaneously and selectively extract the position information of all translational degrees of freedom with minimal losses. To this end, we collect all the light back-scattered from a levitated nanoparticle using a parabolic mirror and couple it into a spatial mode sorter. The sorter effectively demultiplexes the information content of the scattered electric field, resulting in each of the nanoparticle's translational degrees of freedom being selectively encoded in the amplitude of orthogonal optical modes. We report measurement efficiencies of ${(\eta_{^{\mathrm{tot}}}^{_{x}}, \eta_{^{\mathrm{tot}}}^{_{y}}, \eta_{^{\mathrm{tot}}}^{_{z}}) = (0.14, 0.16, 0.32)}$ $>$ 1/9, which should enable the 3D motional quantum ground state of a levitated optomechanical system. Further, we believe this technique opens up the possibility to implement coherent feedback control of a levitated nanoparticle.

Related papers

Inverse Microparticle Design for Enhanced Optical Trapping and Detection Efficiency in All Six Degrees of Freedom [0.0]
We present a computational framework that combines an efficient electromagnetic scattering solver with the adjoint method to inversely design printable microparticles tailored for levitated optomechanics.<n>This improves the feasibility of quantum-limited motional control of all translational and rotational degrees of freedom in a standard standing-wave optical trap.
arXiv Detail & Related papers (2025-06-02T16:27:00Z)
Stabilizing nanoparticles in the intensity minimum: feedback levitation on an inverted potential [2.4625958940786234]
We demonstrate the stable trapping of a levitated nanoparticles on top of an inverted potential using a combination of optical readout and electrostatic control. Our approach may enable new levitation-based sensing schemes with enhanced bandwidth.
arXiv Detail & Related papers (2024-09-03T12:30:16Z)
Nanoscale feedback control of six degrees of freedom of a near-sphere [0.0]
We demonstrate feedback cooling of all the angular motions of a near-spherical neutral nanoparticles with all the translational motions feedback-cooled to near the ground state. A tight, anisotropic optical confinement allows us to clearly observe three angular oscillations. We develop a thermometry for three angular oscillations and realize feedback cooling of them to temperatures of lower than $unit[0.03]K$ by electrically controlling the electric dipole moment of the nanoparticles.
arXiv Detail & Related papers (2023-03-06T01:51:37Z)
Third quantization of open quantum systems: new dissipative symmetries and connections to phase-space and Keldysh field theory formulations [77.34726150561087]
We reformulate the technique of third quantization in a way that explicitly connects all three methods. We first show that our formulation reveals a fundamental dissipative symmetry present in all quadratic bosonic or fermionic Lindbladians. For bosons, we then show that the Wigner function and the characteristic function can be thought of as ''wavefunctions'' of the density matrix.
arXiv Detail & Related papers (2023-02-27T18:56:40Z)
Non-Hermitian zero mode laser in a nanophotonic trimer [55.41644538483948]
We report on the direct observation of a lasing zero mode in a non-Hermitian three coupled nanocavity array. We show efficient excitation for nearly equal pump power in the two extreme cavities. The realization of zero mode lasing in large arrays of coupled nanolasers has potential applications in laser-mode engineering.
arXiv Detail & Related papers (2023-02-03T15:21:44Z)
Simultaneous ground-state cooling of two mechanical modes of a levitated nanoparticle [0.0]
We show the transition from 1D to 2D ground-state cooling while avoiding the effect of dark modes. Our results lay the foundations for generating quantum-limited high orbital angular momentum states with applications in rotation sensing.
arXiv Detail & Related papers (2022-09-30T09:08:46Z)
Optical mode conversion via spatiotemporally modulated atomic susceptibility [0.0]
Space-divisioning has gained attention as a means to substantially increase the rate of information transfer. We demonstrate devices capable of manipulating photonic degrees of freedom with high efficiency.
arXiv Detail & Related papers (2022-08-09T00:49:04Z)
Scalable all-optical cold damping of levitated nanoparticles [3.0112534079486846]
We introduce a novel all-optical cold damping scheme based on spatial modulation of the trap position. We show that the technique cools the center-of-mass motion of particles down to $17,$mK at a pressure of $2 times 10-6,$mbar. Our work paves the way towards studying quantum interactions between particles, achieving 3D quantum control of particle motion without cavity-based cooling, electrodes or charged particles.
arXiv Detail & Related papers (2022-05-09T17:57:20Z)
Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces. With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
arXiv Detail & Related papers (2022-03-28T19:37:08Z)
Dispersive readout of molecular spin qudits [68.8204255655161]
We study the physics of a magnetic molecule described by a "giant" spin with multiple $d > 2$ spin states. We derive an expression for the output modes in the dispersive regime of operation. We find that the measurement of the cavity transmission allows to uniquely determine the spin state of the qudits.
arXiv Detail & Related papers (2021-09-29T18:00:09Z)
Visualizing spinon Fermi surfaces with time-dependent spectroscopy [62.997667081978825]
We propose applying time-dependent photo-emission spectroscopy, an established tool in solid state systems, in cold atom quantum simulators. We show in exact diagonalization simulations of the one-dimensional $t-J$ model that the spinons start to populate previously unoccupied states in an effective band structure. The dependence of the spectral function on the time after the pump pulse reveals collective interactions among spinons.
arXiv Detail & Related papers (2021-05-27T18:00:02Z)
Engineering multipartite entangled states in doubly pumped parametric down-conversion processes [68.8204255655161]
We investigate the quantum state generated by optical parametric down-conversion in a $chi(2) $ medium driven by two modes. The analysis shows the emergence of multipartite, namely 3- or 4-partite, entangled states in a subset of the modes generated by the process.
arXiv Detail & Related papers (2020-07-23T13:53:12Z)

This list is automatically generated from the titles and abstracts of the papers in this site.