Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Reaction Quotient02:35

Reaction Quotient

49.2K
The status of a reversible reaction is conveniently assessed by evaluating its reaction quotient (Q). For a reversible reaction described by m A + n B ⇌ x C + y D, the reaction quotient is derived directly from the stoichiometry of the balanced equation as
49.2K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

48.4K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
48.4K
Free Energy Changes for Nonstandard States03:25

Free Energy Changes for Nonstandard States

11.7K
The free energy change for a process taking place with reactants and products present under nonstandard conditions (pressures other than 1 bar; concentrations other than 1 M) is related to the standard free energy change according to this equation:
 
where R is the gas constant (8.314 J/K·mol), T is the absolute temperature in kelvin, and Q is the reaction quotient. This equation may be used to predict the spontaneity of a process under any given set of conditions.
Reaction Quotient...
11.7K
The Uncertainty Principle04:08

The Uncertainty Principle

25.5K
Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He...
25.5K
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

28.1K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
28.1K
First Law of Thermodynamics02:16

First Law of Thermodynamics

34.3K
Energy Conservation
34.3K

You might also read

Related Articles

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

Sort by
Same author

30 dB on-chip ultra-high inverse weak value amplification.

Optics letters·2026
Same author

Revealing the fuel of a quantum continuous measurement-based refrigerator.

Physical review. E·2026
Same author

Quantum benchmarking of high-fidelity noise-biased operations on a detuned Kerr-cat qubit.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Coupling a single spin to the motion of a carbon nanotube.

Nature communications·2025
Same author

Surface-Morphology-Assisted Trapping of Strongly Coupled Electron-on-Neon Charge States.

Physical review letters·2025
Same author

Engineering Nonequilibrium Steady States through Floquet Liouvillians.

Physical review letters·2025
Same journal

Erratum: Low-dimensional model for adaptive networks of spiking neurons [Phys. Rev. E 111, 014422 (2025)].

Physical review. E·2026
Same journal

Disentangling the effects of many-body forces on depletion interactions.

Physical review. E·2026
Same journal

Charge transport and mode transition in dual-energy electron beam diodes.

Physical review. E·2026
Same journal

Optimization of multisite reactions in complex compartmentalized media.

Physical review. E·2026
Same journal

Origin of geometric cohesion in nonconvex granular materials: Interplay between interdigitation and rotational constraints enhancing frictional stability.

Physical review. E·2026
Same journal

Interaction of walkers with a standing Faraday wave.

Physical review. E·2026
See all related articles

Related Experiment Video

Updated: Sep 22, 2025

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
05:30

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

672

Efficiently fueling a quantum engine with incompatible measurements.

Sreenath K Manikandan1,2,3, Cyril Elouard1,4, Kater W Murch5

  • 1Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.

Physical Review. E
|May 20, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a quantum measurement engine that extracts work from a quantum harmonic oscillator using simultaneous position and momentum measurements. Protocols for single-shot and continuous measurements demonstrate potential for unit work conversion efficiency.

More Related Videos

Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer
07:24

Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer

Published on: February 19, 2018

10.2K
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

8.5K

Related Experiment Videos

Last Updated: Sep 22, 2025

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
05:30

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

672
Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer
07:24

Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer

Published on: February 19, 2018

10.2K
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

8.5K

Area of Science:

  • Quantum mechanics
  • Thermodynamics
  • Quantum measurement theory

Background:

  • Quantum harmonic oscillators are fundamental systems in quantum mechanics.
  • Extracting work from quantum systems presents unique challenges due to quantum effects.

Purpose of the Study:

  • To propose and analyze a quantum measurement engine for work extraction from a harmonic oscillator.
  • To investigate work extraction protocols based on quantum measurements of noncommuting observables.

Main Methods:

  • Developing protocols for work extraction using simultaneous quantum measurements of position and momentum quadratures.
  • Analyzing single-shot and time-continuous measurement regimes.
  • Relating extractable work to measurement-induced noise.

Main Results:

  • Two distinct protocols for work extraction are presented, one for single-shot and one for time-continuous measurements.
  • In the single-shot limit, measurement adds energy, which is then extracted.
  • In the continuous limit, measurement leads to a diffusing coherent state.
  • Exact results for work distribution at arbitrary finite times are derived.

Conclusions:

  • The proposed quantum measurement engine can extract work from a quantum harmonic oscillator.
  • Both protocols show potential for achieving unit work conversion efficiency in principle.
  • The study provides a theoretical framework for understanding work extraction in quantum systems.