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

Propagation of Uncertainty from Random Error00:59

Propagation of Uncertainty from Random Error

An experiment often consists of more than a single step. In this case, measurements at each step give rise to uncertainty. Because the measurements occur in successive steps, the uncertainty in one step necessarily contributes to that in the subsequent step. As we perform statistical analysis on these types of experiments, we must learn to account for the propagation of uncertainty from one step to the next. The propagation of uncertainty depends on the type of arithmetic operation performed on...
Quantum Numbers02:43

Quantum Numbers

It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

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. Schrödinger...
Radical Anti-Markovnikov Addition to Alkenes: Overview01:25

Radical Anti-Markovnikov Addition to Alkenes: Overview

The addition of hydrogen bromide to alkenes in the presence of hydroperoxides or peroxides proceeds via an anti-Markovnikov pathway and yields alkyl bromides.
Radical Formation: Addition00:47

Radical Formation: Addition

Radicals can be formed by adding a radical to a spin-paired molecule. This is typically observed with unsaturated species, where the addition of a radical across the π bond leads to the production of a new radical by dissolving the π bond. For example, the addition of a Br radical to an alkene yields a carbon-centered radical.
Similar to charge conservation in chemical reactions, spin conservation is implicit for radical reactions. Accordingly, the product formed must possess an unpaired...
Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)01:27

Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)

α,β-Unsaturated carbonyl compounds with two electrophilic sites, the carbonyl carbon, and the β carbon, are susceptible to nucleophilic attack via two modes: conjugate or 1,4-addition and direct or 1,2-addition.
Conjugate addition results in a thermodynamically stable product. The reaction retains the stronger C=O bond at the expense of the weaker C=C π bond. The process is slow as the β carbon is less electrophilic than the carbonyl carbon.
Direct addition products are formed faster owing to...

You might also read

Related Articles

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

Sort by
Same author

The association of different dimensions of anhedonia in the relationship between depressive symptoms and self-harm in adolescents with mood disorders.

Frontiers in psychiatry·2026
Same author

Altered Light-Dark Cycles Promote Osteoclast Activity and Decrease Bone Density in Mice: The Modulatory Role of Melatonin and Sirt3-SOD2 Signaling.

Journal of pineal research·2026
Same author

The Role of Hemoglobin in Temporomandibular Joint Osteoarthritis and the Therapeutic Potential of Hydroxyurea.

International journal of dentistry·2026
Same author

Perceptions of primary caregivers of severely dependent elderly with disabilities about internet-based home care: A qualitative study.

Geriatric nursing (New York, N.Y.)·2026
Same author

Using machine learning to reveal two distinct neuroanatomical subtypes of first-episode, drug-naïve major depressive disorder: Evidence from the REST-meta-MDD project.

Journal of affective disorders·2026
Same author

Integrated electro-optic digital-to-analog link for efficient computing and arbitrary waveform generation.

Nature photonics·2026
Same journal

Demonstration of a quantum C-NOT gate in a time-multiplexed fully reconfigurable photonic processor.

Nature communications·2026
Same journal

Nonlinear quantum light source with van der Waals ferroelectric NbOX<sub>2</sub> (X = Br, I).

Nature communications·2026
Same journal

Antagonistic histone H2A variants and autonomous heterochromatin formation shape epigenomic patterns in Arabidopsis.

Nature communications·2026
Same journal

The long tail of nitrate pollution in groundwater challenges governance of global water quality.

Nature communications·2026
Same journal

Select microbial metabolites promote tau aggregation in a murine tauopathy model.

Nature communications·2026
Same journal

Warming climate has lengthened global intense tropical cyclone seasons.

Nature communications·2026
See all related articles

Related Experiment Videos

Adding control to arbitrary unknown quantum operations.

Xiao-Qi Zhou1, Timothy C Ralph, Pruet Kalasuwan

  • 1Centre for Quantum Photonics, H.H. Wills Physics Laboratory & Department of Electrical and Electronic Engineering, University of Bristol, UK.

Nature Communications
|August 4, 2011
PubMed
Summary
This summary is machine-generated.

Researchers developed a new technique to simplify adding control qubits to quantum operations, overcoming a key challenge in quantum computing. This method works for any quantum operation and is demonstrated in a photonic system, enabling high-fidelity two-qubit gates.

Related Experiment Videos

Area of Science:

  • Quantum Information Science
  • Quantum Computing
  • Quantum Optics

Background:

  • Quantum algorithms offer significant computational advantages but are hindered by their complexity.
  • Implementing control qubits for arbitrary quantum operations is a critical requirement for many quantum algorithms, simulations, and metrology applications.
  • Existing methods for adding control qubits can be complex and system-dependent.

Purpose of the Study:

  • To develop and demonstrate an architecture-independent technique for simplifying the addition of control qubits to quantum operations.
  • To separate the challenges of implementing quantum operations from the task of adding control qubits.
  • To showcase the technique's versatility and effectiveness in a photonic system.

Main Methods:

  • Developed a novel technique for adding control qubits that is independent of the underlying quantum operation and hardware architecture.
  • Demonstrated an entanglement-based implementation of the technique in a photonic system.
  • Utilized the technique to realize various two-qubit gates.

Main Results:

  • Successfully demonstrated an architecture-independent method for incorporating control qubits.
  • Achieved high-fidelity realization of a range of two-qubit gates using the entanglement-based photonic approach.
  • The technique effectively decouples the implementation of quantum operations from the control mechanism.

Conclusions:

  • The developed technique significantly simplifies the process of adding control qubits to quantum operations.
  • This advancement is crucial for the development of more complex quantum algorithms and applications.
  • The photonic demonstration highlights the practical applicability and high performance of the proposed method.