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Related Concept Videos

Phasor Arithmetics01:13

Phasor Arithmetics

Phasors and their corresponding sinusoids are interrelated, offering unique insights into the behavior of alternating current (AC) circuits. One way to understand this relationship is through the operations of differentiation and integration in both the time and phasor domains.
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular frequency.
Synthetic Disvision of Polynomials01:28

Synthetic Disvision of Polynomials

Synthetic division is an efficient algorithmic approach for dividing a polynomial by a linear binomial of the form x - c, where c is a real number. This method is helpful due to its streamlined process, which avoids the more cumbersome steps involved in the traditional long division of polynomials. It simplifies computation and serves as a practical tool for evaluating polynomials and identifying their factors.To perform synthetic division, one begins by listing the coefficients of the...
Clamper Circuit01:14

Clamper Circuit

A clamper circuit, also known as a DC restorer, represents a specialized variant of the rectifier circuit, notable for its method of taking the output across the diode rather than the capacitor. This configuration lends to several distinctive applications, particularly in handling square wave inputs.
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Electro-mechanical Systems01:19

Electro-mechanical Systems

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Electrochemical Systems01:24

Electrochemical Systems

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Related Experiment Video

Updated: Jun 10, 2026

Hand Controlled Manipulation of Single Molecules via a Scanning Probe Microscope with a 3D Virtual Reality Interface
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Hand Controlled Manipulation of Single Molecules via a Scanning Probe Microscope with a 3D Virtual Reality Interface

Published on: October 2, 2016

Controlled full adder-subtractor by vibrational computing.

Laëtitia Bomble1, David Lauvergnat, Françoise Remacle

  • 1Laboratoire de Chimie Physique, Université de Paris-Sud, UMR8000, Orsay, F-91405, France.

Physical Chemistry Chemical Physics : PCCP
|July 28, 2010
PubMed
Summary
This summary is machine-generated.

Quantum computing achieves addition and subtraction using a single laser pulse on a tetra-atomic molecule. This quantum-controlled full adder-subtractor demonstrates high fidelity operations in under 100 picoseconds.

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

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Related Experiment Videos

Last Updated: Jun 10, 2026

Hand Controlled Manipulation of Single Molecules via a Scanning Probe Microscope with a 3D Virtual Reality Interface
11:00

Hand Controlled Manipulation of Single Molecules via a Scanning Probe Microscope with a 3D Virtual Reality Interface

Published on: October 2, 2016

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Area of Science:

  • Quantum computing
  • Molecular quantum control
  • Quantum information processing

Background:

  • Quantum computation requires efficient methods for implementing arithmetic operations.
  • Molecular systems offer potential platforms for quantum information processing due to their complex energy landscapes.

Purpose of the Study:

  • To design and simulate a quantum-controlled full adder-subtractor using molecular vibrational eigenstates.
  • To achieve high-fidelity quantum operations with reduced gate durations.

Main Methods:

  • Encoding four qubits in the vibrational eigenstates of a tetra-atomic molecule (trans-HONO).
  • Utilizing optimal control theory to compute the laser field for gate operation.
  • Implementing a single laser pulse to drive the global unitary transformation.

Main Results:

  • Demonstrated a quantum-controlled full adder-subtractor for binary digits with carry-in/borrow-in.
  • Achieved a gate fidelity exceeding 97% with a total operation timescale under 100 picoseconds.
  • Showcased efficient use of optical resources and reduced operation duration.

Conclusions:

  • Molecular vibrational eigenstates provide a viable platform for implementing complex quantum arithmetic operations.
  • Optimal control theory enables efficient design of laser pulses for high-fidelity quantum gates.
  • The developed quantum adder-subtractor shows promise for future quantum computing architectures.