Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

A multi-centre performance evaluation of a commercially developed liquid biopsy for the earlier detection of brain tumours.

ESMO open·2025

Same author

Quantum Delocalization of a Levitated Nanoparticle.

Physical review letters·2025

Same author

Macroscopic Quantum Superpositions via Dynamics in a Wide Double-Well Potential.

Physical review letters·2024

Same author

High-Q Magnetic Levitation and Control of Superconducting Microspheres at Millikelvin Temperatures.

Physical review letters·2023

Same author

Quantum neural networks with multi-qubit potentials.

Scientific reports·2023

Same author

Tailored ion beam for precise colour centre creation.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2022

Search research articles

Related Experiment Video

Updated: Oct 27, 2025

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Published on: July 18, 2014

Large Quantum Delocalization of a Levitated Nanoparticle Using Optimal Control: Applications for Force Sensing and

T Weiss^1,2, M Roda-Llordes^1,2, E Torrontegui^3,4

¹Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, 6020 Innsbruck, Austria.

Physical Review Letters

|July 23, 2021

Summary

We demonstrate a novel control method to expand a levitated nanoparticle’s quantum state to macroscopic scales. This technique enhances force sensing and nanoparticle entanglement, paving the way for exploring macroscopic quantum phenomena.

More Related Videos

Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment

Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment

Published on: April 4, 2017

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

Related Experiment Videos

Last Updated: Oct 27, 2025

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Published on: July 18, 2014

Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment

Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment

Published on: April 4, 2017

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

Area of Science:

Quantum mechanics
Optics
Nanotechnology

Background:

Levitated nanoparticles offer a platform for studying macroscopic quantum phenomena.
Controlling quantum states at larger scales is a key challenge in quantum physics.

Purpose of the Study:

To develop a time-optimal control protocol for expanding the quantum delocalization of a levitated nanoparticle's center-of-mass motion.
To investigate the potential applications of this protocol in force sensing and quantum entanglement.

Main Methods:

Utilizing bang-bang control of the harmonic potential, including inversion, to manipulate the nanoparticle's motional state.
Simulating the coherent expansion and contraction of the nanoparticle's quantum state.
Analyzing the protocol's performance under realistic noise conditions, including displacement and frequency noise.

Main Results:

Achieved quantum delocalization of the nanoparticle's center-of-mass motion to scales significantly larger than zero-point motion.
Demonstrated the protocol's effectiveness in enhancing force sensing capabilities.
Showcased a significant boost in the entangling rate of two weakly interacting nanoparticles.

Conclusions:

The proposed time-optimal control protocol enables exploration of macroscopic quantum regimes.
This method provides a pathway for improved quantum sensing and entanglement generation with levitated nanoparticles.
The noise analysis accounts for decoherence sources relevant to current experimental setups.