Back action suppression for levitated dipolar scatterers
- URL: http://arxiv.org/abs/2402.04802v2
- Date: Wed, 14 Feb 2024 13:15:40 GMT
- Title: Back action suppression for levitated dipolar scatterers
- Authors: Yannick Weiser, Tommaso Faorlin, Lorenz Panzl, Thomas Lafenthaler,
Lorenzo Dania, Dmitry S. Bykov, Thomas Monz, Rainer Blatt, Giovanni Cerchiari
- Abstract summary: We present a setup to enhance the information gleaned from optomechanical measurements by constraining the back action to a specific spatial direction.
The setup consists of a hollow hemispherical mirror that controls the light scattered by the dipolar emitter, particularly at high scattering angles.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Levitated dipolar scatterers exhibit exceptional performance as
optomechanical systems for observing quantum mechanics at the mesoscopic scale.
However, their tendency to scatter light in almost any direction poses
experimental challenges, in particular limiting light collection efficiencies
and, consequently, the information extractable from the system. In this
article, we present a setup designed to enhance the information gleaned from
optomechanical measurements by constraining the back action to a specific
spatial direction. This approach facilitates achieving Heisenberg-limited
detection at any given numerical aperture. The setup consists of a hollow
hemispherical mirror that controls the light scattered by the dipolar emitter,
particularly at high scattering angles, thereby focusing the obtained
information. This mirror is compatible with existing setups commonly employed
in levitated optomechanics, including confocal lenses and optical resonators.
Related papers
- Imaging-based Quantum Optomechanics [0.6025438902954768]
In active imaging protocols, information about a landscape is encoded into the spatial mode of a scattered photon.
We show that backaction in this setting arises from spatial photon shot noise, an effect that cannot be observed in single-mode optomechanics.
In conjunction with high-$Q$ nanomechanics, our findings point to new opportunities at the interface of quantum imaging and optomechanics.
arXiv Detail & Related papers (2024-07-09T17:31:50Z) - Squeezing for Broadband Multidimensional Variational Measurement [55.2480439325792]
We show that optical losses inside cavity restrict back action exclusion due to loss noise.
We analyze how two-photon (nondegenerate) and conventional (degenerate) squeezing improve sensitivity with account optical losses.
arXiv Detail & Related papers (2023-10-06T18:41:29Z) - Atomic diffraction from single-photon transitions in gravity and
Standard-Model extensions [49.26431084736478]
We study single-photon transitions, both magnetically-induced and direct ones, in gravity and Standard-Model extensions.
We take into account relativistic effects like the coupling of internal to center-of-mass degrees of freedom, induced by the mass defect.
arXiv Detail & Related papers (2023-09-05T08:51:42Z) - Controlling photon polarisation with a single quantum dot spin [0.0]
We demonstrate the control of giant polarisation rotations induced by a single electron spin.
We find that the polarisation state of the reflected photons can be manipulated in most of the Poincar'e sphere, through controlled spin-induced rotations.
This control allows the operation of spin-photon interfaces in various configurations, including at zero or low magnetic fields.
arXiv Detail & Related papers (2022-12-07T16:37:59Z) - Generating quantum entanglement between macroscopic objects with
continuous measurement and feedback control [0.6738135972929344]
We show that entanglement between the mechanical mirrors is generated when the states of the common and differential modes are squeezed with high purity.
Our results also show that quantum entanglement between $7$ mg mirrors is achievable in the short term.
arXiv Detail & Related papers (2022-10-24T12:37:57Z) - 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) - Angular trapping of a linear-cavity mirror with an optical torsional
spring [0.0]
We show that optical radiation pressure can be used to trap the rotational motion of a suspended mirror.
The radiation pressure of the laser beam inside the cavity actually works as a positive restoring torque.
arXiv Detail & Related papers (2021-10-26T09:03:15Z) - Topologically Protecting Squeezed Light on a Photonic Chip [58.71663911863411]
Integrated photonics offers an elegant way to increase the nonlinearity by confining light strictly inside the waveguide.
We experimentally demonstrate the topologically protected nonlinear process of spontaneous four-wave mixing enabling the generation of squeezed light on a silica chip.
arXiv Detail & Related papers (2021-06-14T13:39:46Z) - 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) - Optical trapping of the transversal motion for an optically levitated
mirror [0.04618037115403289]
We prove that optical levitation is realizable with only two Fabry-P'erot cavities that are aligned vertically.
This work paves the way toward optical levitation and realizing a macroscopic quantum system.
arXiv Detail & Related papers (2020-07-03T11:50:38Z) - Nitrogen-vacancy defect emission spectra in the vicinity of an
adjustable silver mirror [62.997667081978825]
Optical emitters of quantum radiation in the solid state are important building blocks for emerging technologies.
We experimentally study the emission spectrum of an ensemble of nitrogen-vacancy defects implanted around 8nm below the planar diamond surface.
arXiv Detail & Related papers (2020-03-31T10:43:26Z)
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.