Collective modes of nanoparticles levitated in a cavity: mechanical mode combs

• URL: http://arxiv.org/abs/2406.00366v1
• Date: Sat, 1 Jun 2024 08:58:47 GMT
• Title: Collective modes of nanoparticles levitated in a cavity: mechanical mode combs
• Authors: M. Rademacher, T. S. Monteiro,
• Abstract summary: Levitated nanoparticles are being investigated as ultrasensitive sensors of forces and accelerations. We show the spectral characteristics of collective motion of $Ntot= 2-20 $ nanoparticles modes interacting via the optical light of a cavity. We show the mechanical comb can autonomously repair loss of teeth due to nanoparticles loss.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Levitated nanoparticles are being investigated as ultrasensitive sensors of forces and accelerations, with applications ranging from fundamental physics phenomena such as dark matter or quantum gravity to real world applications. Quantum cooling in up to 2 motional modes was achieved recently, and attention is now turning to multimode and multiparticle regimes. We investigate here the spectral characteristics of collective motion of $\Ntot= 2-20 $ nanoparticle modes interacting via the optical light of a cavity. We find output spectra of collective motion typically exhibit two dominant generic features: a broad spectral feature, the collective bright mode (CBM) as expected; but we introduce also the mechanical mode comb (MC) a -- not previously studied -- spectral feature. We investigate numerically, and can also precisely reproduce all the intricate details of the MC spectra, including ponderomotive squeezing, with a simple closed-form expression. We show the mechanical comb can autonomously repair loss of teeth due to nanoparticle loss, a feature that may offer robustness to a levitated sensor of external forces.

Related papers

• Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
  We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
  arXiv  Detail & Related papers  (2024-08-30T15:54:33Z)
• All-Optical Nuclear Quantum Sensing using Nitrogen-Vacancy Centers in Diamond [52.77024349608834]
  Microwave or radio-frequency driving poses a significant limitation for miniaturization, energy-efficiency and non-invasiveness of quantum sensors. We overcome this limitation by demonstrating a purely optical approach to coherent quantum sensing. Our results pave the way for highly compact quantum sensors to be employed for magnetometry or gyroscopy applications.
  arXiv  Detail & Related papers  (2022-12-14T08:34:11Z)
• 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)
• Tuneable Gaussian entanglement in levitated nanoparticle arrays [0.0]
  We propose a scheme to generate entanglement in the motional steady state of multiple levitated nanoparticles using coherent scattering to multiple cavity modes. Our proposal paves the way towards creating complex quantum states of multiple levitated nanoparticles for advanced quantum sensing protocols and many-body quantum simulations.
  arXiv  Detail & Related papers  (2022-06-15T08:19:36Z)
• Controlling mode orientations and frequencies in levitated cavity optomechanics [0.0]
  coherent-scattering (CS) set-up allows quantum ground state cooling of a levitated nanoparticles. We demonstrate experimentally that it is possible to strongly cavity cool and control the em unperturbed modes. Findings have implications for directional force sensing using CS set-ups.
  arXiv  Detail & Related papers  (2022-04-20T17:07:31Z)
• Electromagnetically induced transparency in inhomogeneously broadened divacancy defect ensembles in SiC [52.74159341260462]
  Electromagnetically induced transparency (EIT) is a phenomenon that can provide strong and robust interfacing between optical signals and quantum coherence of electronic spins. We show that EIT can be established with high visibility also in this material platform upon careful design of the measurement geometry. Our work provides an understanding of EIT in multi-level systems with significant inhomogeneities, and our considerations are valid for a wide array of defects in semiconductors.
  arXiv  Detail & Related papers  (2022-03-18T11:22:09Z)
• Continuous-Wave Frequency Upconversion with a Molecular Optomechanical Nanocavity [46.43254474406406]
  We use molecular cavity optomechanics to demonstrate upconversion of sub-microwatt continuous-wave signals at $sim$32THz into the visible domain at ambient conditions. The device consists in a plasmonic nanocavity hosting a small number of molecules. The incoming field resonantly drives a collective molecular vibration, which imprints an optomechanical modulation on a visible pump laser.
  arXiv  Detail & Related papers  (2021-07-07T06:23:14Z)
• 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)
• Spin Entanglement and Magnetic Competition via Long-range Interactions in Spinor Quantum Optical Lattices [62.997667081978825]
  We study the effects of cavity mediated long range magnetic interactions and optical lattices in ultracold matter. We find that global interactions modify the underlying magnetic character of the system while introducing competition scenarios. These allow new alternatives toward the design of robust mechanisms for quantum information purposes.
  arXiv  Detail & Related papers  (2020-11-16T08:03:44Z)
• Quantum Embedded Superstates [0.0]
  Superstates can support ultranarrow lines in scattering spectra associated with quasi bound states in the continuum (quasi-BIC) These modes are of great interest for sensing applications as they enable compact systems with unprecedented sensitivity. Here, we unveil that a three-level quantum system can be tailored to support the quantum analog of an embedded superstate with an unboundedly narrow emission line.
  arXiv  Detail & Related papers  (2020-07-27T21:01:11Z)
• Stationary Gaussian Entanglement between Levitated Nanoparticles [0.0]
  Coherent scattering of photons is a novel mechanism of optomechanical coupling for optically levitated nanoparticles. We show that it allows efficient deterministic generation of Gaussian entanglement between two particles in separate tweezers.
  arXiv  Detail & Related papers  (2020-06-05T09:55:10Z)

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

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.