High purity two-dimensional levitated mechanical oscillator
- URL: http://arxiv.org/abs/2409.04863v1
- Date: Sat, 7 Sep 2024 15:58:45 GMT
- Title: High purity two-dimensional levitated mechanical oscillator
- Authors: Q. Deplano, A. Pontin, A. Ranfagni, F. Marino, F. Marin,
- Abstract summary: We report the achievement of a high purity two-dimensional state in a regime where the strong optomechanical coupling induces the desired spectral superposition between oscillations in different directions.
Our system serves as an excellent platform for realizing continuous variable entanglement in two-dimensional motion.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In recent years, levitated optomechanics has delivered on the promise of reaching the motional quantum ground state. An important next milestone of the field would be the generation of mechanical entanglement. An ideal candidate is the two-dimensional motion in the polarization plane of an optical tweezer inside an optical cavity, where optical and mechanical modes are coupled via coherent scattering. Necessary conditions towards this achievement are two-dimensional ground state cooling along with substantial spectral overlap between the two modes. The latter condition is required to generate the necessary correlations, but unfortunately, it hinders efficient cooling thus narrowing the useful parameter space. In this work, we report the achievement of a high purity two-dimensional state in a regime where the strong optomechanical coupling induces the desired spectral superposition between oscillations in different directions, as reflected in the non-trivial spectral shape of the detected cavity field. As a result, significant correlations consistently arise between any pair of orthogonal directions, preventing the motion from being reduced to two independent one-dimensional oscillators and leading to higher purity compared to that scenario. Our system serves as an excellent platform for realizing continuous variable entanglement in two-dimensional motion.
Related papers
- Dissipative stabilization of maximal entanglement between non-identical
emitters via two-photon excitation [49.1574468325115]
Two non-identical quantum emitters, when placed within a cavity and coherently excited at the two-photon resonance, can reach stationary states of nearly maximal entanglement.
We show that this mechanism is merely one among a complex family of phenomena that can generate both stationary and metastable entanglement when driving the emitters at the two-photon resonance.
arXiv Detail & Related papers (2023-06-09T16:49:55Z) - Unconditional Wigner-negative mechanical entanglement with
linear-and-quadratic optomechanical interactions [62.997667081978825]
We propose two schemes for generating Wigner-negative entangled states unconditionally in mechanical resonators.
We show analytically that both schemes stabilize a Wigner-negative entangled state that combines the entanglement of a two-mode squeezed vacuum with a cubic nonlinearity.
We then perform extensive numerical simulations to test the robustness of Wigner-negative entanglement attained by approximate CPE states stabilized in the presence of thermal decoherence.
arXiv Detail & Related papers (2023-02-07T19:00:08Z) - Photon generation and entanglement in a double superconducting cavity [105.54048699217668]
We study the dynamical Casimir effect in a double superconducting cavity in a quantum electrodynamics architecture.
We study the creation of photons when the walls oscillate harmonically with a small amplitude.
arXiv Detail & Related papers (2022-07-18T16:43:47Z) - Optomechanical parametric oscillation of a quantum light-fluid lattice [0.0]
We describe a fully-resonant optomechanical parametric amplifier involving a polariton condensate in a trap lattice quadratically coupled to mechanical modes.
We show that the coherent mechanical oscillations correspond to parametric resonances with threshold condition different to that of standard linear optomechanical self-oscillation.
The observed new phenomena can have applications for the generation of entangled phonon pairs, squeezed mechanical states relevant in sensing and quantum computation, and for the bidirectional frequency conversion of signals in a technologically relevant range.
arXiv Detail & Related papers (2021-12-30T23:59:43Z) - Two-dimensional quantum motion of a levitated nanosphere [0.0]
We report on the two-dimensional (2D) dynamics of a levitated nanoparticles in an optical cavity.
By rotating the polarization angle of the tweezer beam we tune the system from a one-dimensional (1D) cooling regime.
We achieve a strong 2D confinement with thermal occupancy of 3.4 $pm$ 0.4 along the warmest direction and around unity in the one.
arXiv Detail & Related papers (2021-12-21T17:39:49Z) - Interference-induced directional emission from an unpolarized two level
emitter into a circulating cavity [0.0]
Chiral coupling between quantum emitters and evanescent fields allows directional emission into nanophotonic devices.
Here, we demonstrate that a two level emitter with a randomly polarized dipole moment can be made to emit directionally into a circulating cavity.
arXiv Detail & Related papers (2021-09-20T07:21:43Z) - Two-photon resonance fluorescence of two interacting non-identical
quantum emitters [77.34726150561087]
We study a system of two interacting, non-indentical quantum emitters driven by a coherent field.
We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters.
This can be exploited for applications such as superresolution imaging of point-like sources.
arXiv Detail & Related papers (2021-06-04T16:13:01Z) - A mechanically stable and tunable cryogenic Fabry-Perot microcavity [0.0]
High-finesse, open-geometry microcavities have recently emerged as a versatile tool for enhancing interactions between photons and material systems.
We present the design and characterization of a system that can achieve $sim$16 pm-rms passive mechanical stability between two high-finesse mirrors.
Our results facilitate operation of a tunable, high-finesse cavity within a closed-cycle cryostat, representing an enabling technology for cavity coupling to a variety of solid-state systems.
arXiv Detail & Related papers (2021-03-05T17:32:12Z) - Superposition of two-mode squeezed states for quantum information
processing and quantum sensing [55.41644538483948]
We investigate superpositions of two-mode squeezed states (TMSSs)
TMSSs have potential applications to quantum information processing and quantum sensing.
arXiv Detail & Related papers (2021-02-01T18:09:01Z) - Hyperentanglement in structured quantum light [50.591267188664666]
Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols.
Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes.
We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
arXiv Detail & Related papers (2020-06-02T18:00:04Z)
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.