Quantum squeezing of a levitated nanomechanical oscillator

• URL: http://arxiv.org/abs/2504.17944v1
• Date: Thu, 24 Apr 2025 21:15:22 GMT
• Title: Quantum squeezing of a levitated nanomechanical oscillator
• Authors: M. Kamba, N. Hara, K. Aikawa,
• Abstract summary: We demonstrate quantum squeezing of the motion of a single nanoparticles by rapidly varying its oscillation frequency.<n>Our work shows that a levitated nanoparticles offers an ideal platform for studying non-classical states of its motion.<n>It paves the way for its applications in quantum sensing, as well as for exploring quantum mechanics at a macroscopic scale.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Manipulating the motions of macroscopic objects near their quantum mechanical uncertainties has been desired in diverse fields, including fundamental physics, sensing, and transducers. Despite significant progresses in ground-state cooling of a levitated solid particle, realizing non-classical states of its motion has been elusive. Here, we demonstrate quantum squeezing of the motion of a single nanoparticle by rapidly varying its oscillation frequency. We reveal significant narrowing of the velocity variance to $-4.9(1)$~dB of that of the ground state via free-expansion measurements. To quantitatively confirm our finding, we develop a method to accurately measure the displacement of the nanoparticle by referencing an optical standing wave. Our work shows that a levitated nanoparticle offers an ideal platform for studying non-classical states of its motion and paves the way for its applications in quantum sensing, as well as for exploring quantum mechanics at a macroscopic scale.

Related papers

• Quantum Delocalization of a Levitated Nanoparticle [0.0]
  We prepare a delocalized state of a levitating solid-state nanosphere with coherence length exceeding the zero-point motion. Our work is a stepping stone towards the generation of delocalization scales comparable to the object size.
  arXiv  Detail & Related papers  (2024-08-02T13:36:42Z)
• A Theory of Quantum Jumps [44.99833362998488]
  We study fluorescence and the phenomenon of quantum jumps'' in idealized models of atoms coupled to the quantized electromagnetic field. Our results amount to a derivation of the fundamental randomness in the quantum-mechanical description of microscopic systems.
  arXiv  Detail & Related papers  (2024-04-16T11:00:46Z)
• Revealing the velocity uncertainties of a levitated particle in the quantum ground state [0.0]
  We demonstrate time-of-flight measurements for an ultracold levitated nanoparticles and reveal its velocity for the translational motion brought to the quantum ground state. We discover that the velocity distributions obtained with repeated release-and-recapture measurements are significantly broadened via librational motions of the nanoparticles.
  arXiv  Detail & Related papers  (2023-06-28T23:34:43Z)
• Bound state of distant photons in waveguide quantum electrodynamics [137.6408511310322]
  Quantum correlations between distant particles remain enigmatic since the birth of quantum mechanics. We predict a novel kind of bound quantum state in the simplest one-dimensional setup of two interacting particles in a box. Such states could be realized in the waveguide quantum electrodynamics platform.
  arXiv  Detail & Related papers  (2023-03-17T09:27:02Z)
• Macroscopic Quantum Superpositions via Dynamics in a Wide Double-Well Potential [0.0]
  We present an experimental proposal for the rapid preparation of the center of mass of a levitated particle in a macroscopic quantum state. This state is prepared by letting the particle evolve in a static double-well potential after a sudden switchoff of the harmonic trap. We highlight the possibility of using two particles, one evolving in each potential well, to mitigate the impact of collective sources of noise and decoherence.
  arXiv  Detail & Related papers  (2023-03-14T15:00:55Z)
• 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)
• 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)
• Detectable Signature of Quantum Friction on a Sliding Particle in Vacuum [58.720142291102135]
  We show traces of quantum friction in the degradation of the quantum coherence of a particle. We propose to use the accumulated geometric phase acquired by a particle as a quantum friction sensor. The experimentally viable scheme presented can spark renewed optimism for the detection of non-contact friction.
  arXiv  Detail & Related papers  (2021-03-22T16:25:27Z)
• Quantum control of a nanoparticle optically levitated in cryogenic free space [0.0]
  Tests of quantum mechanics on a macroscopic scale require extreme control over mechanical motion and its decoherence. In this work, we optically levitate a femto-gram dielectric particle in cryogenic free space. We cool its center-of-mass motion by measurement-based feedback to an average occupancy of 0.65 motional quanta, corresponding to a state purity of 43%.
  arXiv  Detail & Related papers  (2021-03-05T18:12:50Z)
• Enhanced decoherence for a neutral particle sliding on a metallic surface in vacuum [68.8204255655161]
  We show that non-contact friction enhances the decoherence of the moving atom. We suggest that measuring decoherence times through velocity dependence of coherences could indirectly demonstrate the existence of quantum friction.
  arXiv  Detail & Related papers  (2020-11-06T17:34:35Z)
• Quantum sensing with nanoparticles for gravimetry; when bigger is better [0.0]
  We describe experiments with optically levitated nanoparticles and their proposed utility for acceleration sensing. Unique to the levitated nanoparticles platform is the ability to implement long-lived quantum spatial superpositions for enhanced gravimetry. This follows a global trend in developing sensors, such as cold-atom interferometers, that exploit superposition or entanglement.
  arXiv  Detail & Related papers  (2020-05-29T16:02:24Z)
• Zitterbewegung and Klein-tunneling phenomena for transient quantum waves [77.34726150561087]
  We show that the Zitterbewegung effect manifests itself as a series of quantum beats of the particle density in the long-time limit. We also find a time-domain where the particle density of the point source is governed by the propagation of a main wavefront. The relative positions of these wavefronts are used to investigate the time-delay of quantum waves in the Klein-tunneling regime.
  arXiv  Detail & Related papers  (2020-03-09T21:27:02Z)

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.