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

Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

707
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis.
707
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

1.0K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.0K
Atomic Nuclei: Magnetic Resonance01:05

Atomic Nuclei: Magnetic Resonance

741
The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
741
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

890
A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
890
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

271
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
271
Atomic Nuclei: Larmor Precession Frequency01:11

Atomic Nuclei: Larmor Precession Frequency

1.6K
The earth's gravitational field produces a 'twisting force' perpendicular to the angular momentum of a spinning mass (such as a spinning top) that causes the mass to 'wobble' around the gravitational field axis in a phenomenon called precession. Similarly, the magnetic moment (μ) of a spinning nucleus precesses due to an external magnetic field directed along the z-axis. The precession of the magnetic moment vector about the magnetic field is called Larmor precession,...
1.6K

You might also read

Related Articles

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

Sort by
Same author

The Riemann Hypothesis manifested in dynamical quantum phase transitions.

Nature communications·2026
Same author

Hearing higher-order Weyl exceptional rings in lossy metamaterials.

National science review·2026
Same author

Chiral laser gyroscopes breaking the lock-in limit.

Nature·2026
Same author

Cusp-singularity-enhanced Coriolis effect for sensitive chip-scale gyroscopes.

Nature·2026
Same author

Observation of Restored Adiabatic State Transfer in Time-Modulated Non-Hermitian Systems.

Nature communications·2026
Same author

Operating a non-Hermitian atomic magnetometer with programmable digital electronics.

Nature communications·2026

Related Experiment Video

Updated: Aug 26, 2025

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
11:30

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

11.8K

Deterministic Loading of Microwaves onto an Artificial Atom Using a Time-Reversed Waveform.

Wei-Ju Lin1, Yong Lu2,3, Ping Yi Wen4

  • 1Department of Physics, National Tsing Hua University, Hsinchu30013, Taiwan.

Nano Letters
|October 6, 2022
PubMed
Summary
This summary is machine-generated.

Researchers efficiently loaded quantum information onto superconducting artificial atoms using precisely shaped microwave photons. This breakthrough in waveguide quantum electrodynamics is key for developing robust quantum networks.

Keywords:
Quantum networkphoton loadingsuperconducting artificial atomwaveguide quantum electrodynamics

More Related Videos

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

12.9K
Carrier Lifetime Measurements in Semiconductors through the Microwave Photoconductivity Decay Method
07:38

Carrier Lifetime Measurements in Semiconductors through the Microwave Photoconductivity Decay Method

Published on: April 18, 2019

31.5K

Related Experiment Videos

Last Updated: Aug 26, 2025

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
11:30

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

11.8K
Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

12.9K
Carrier Lifetime Measurements in Semiconductors through the Microwave Photoconductivity Decay Method
07:38

Carrier Lifetime Measurements in Semiconductors through the Microwave Photoconductivity Decay Method

Published on: April 18, 2019

31.5K

Area of Science:

  • Quantum physics
  • Quantum information science
  • Superconducting circuits

Background:

  • Deterministic loading of quantum information onto quantum nodes is crucial for quantum network development.
  • Superconducting artificial atoms in waveguides are promising quantum nodes.

Purpose of the Study:

  • To demonstrate efficient loading of quantum information onto a superconducting artificial atom.
  • To investigate the role of optimal temporal waveforms and time-reversal symmetry in this process.

Main Methods:

  • Utilized coherent-state microwave photons with an exponentially rising temporal waveform.
  • Employed a single superconducting artificial atom coupled to a semi-infinite 1D transmission-line waveguide.
  • Matched the waveform's time constant to the artificial atom's decoherence time.

Main Results:

  • Achieved a high loading efficiency of 94.2% ± 0.7% from 1D semi-free space to the artificial atom.
  • Demonstrated a time-reversal symmetry overlap of up to 97.1% ± 0.4%, explaining the high efficiency.
  • Showcased the effectiveness of weak coherent states with optimized waveforms.

Conclusions:

  • Efficient deterministic loading of quantum information onto superconducting artificial atoms is achievable.
  • Time-reversal symmetry plays a critical role in maximizing loading efficiency.
  • This work advances the development of quantum networks based on waveguide quantum electrodynamics.