Related Experiment Video
Updated: Aug 30, 2025
05:30
Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
Published on: September 8, 2023
645
Quantumness and Dequantumness Power of Quantum Channels
Hongting Song1, Nan Li2,3
1Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China.
Entropy (Basel, Switzerland)
|August 26, 2022
Summary
We introduce a new framework to measure how quantum channels affect quantumness in ensembles. This framework defines quantumness power and dequantumness power to analyze quantum dynamics and identify completely dequantumness channels.
Area of Science:
- Quantum Information Science
- Quantum Dynamics
- Quantum Channel Characterization
Background:
- Understanding quantum dynamics is crucial for quantum information processing.
- Characterizing quantum channels requires robust theoretical frameworks.
- The role of quantumness in ensembles is an active area of research.
Purpose of the Study:
- To propose a framework for characterizing quantum channels based on their effect on ensemble quantumness.
- To introduce quantitative measures: quantumness power and dequantumness power.
- To analyze the properties of completely dequantumness channels and their relation to Markovianity.
Main Methods:
- Developing a theoretical framework to analyze quantumness dynamics in ensembles.
- Defining and calculating quantumness power and dequantumness power.
- Investigating time-varying quantum channels and their impact on quantumness.
- Analyzing the relationship between completely dequantumness channels and Markovian dynamics through examples.
Main Results:
- A novel framework for characterizing quantum channels by their ability to induce or reduce quantumness in ensembles.
- Introduction of the concepts of quantumness power and dequantumness power.
- Identification of completely dequantumness channels as those that always reduce quantumness.
- Analysis of the connection between completely dequantumness channels and Markovianity.
Conclusions:
- The proposed framework offers a new perspective on quantum channel characterization.
- Quantumness power and dequantumness power provide valuable tools for quantifying channel effects.
- Completely dequantumness channels represent a specific class of quantum dynamics with implications for quantum information processing.
Related Concept Videos
02:43Quantum Numbers
35.5K
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.
35.5K
02:45The Quantum-Mechanical Model of an Atom
42.9K
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.
42.9K
02:32The de Broglie Wavelength
26.2K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
26.2K
04:08The Uncertainty Principle
23.7K
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...
23.7K
01:20The Maximum Power Transfer Theorem
717
Consider a linear AC Thevenin equivalent circuit connected to a load impedance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
717
00:58Energy and Power of a Wave
3.8K
The total energy associated with a wavelength is the sum of the potential energy and the kinetic energy. The average rate of energy transfer associated with a wave is called its power, which is total energy divided by the time it takes to transfer the energy. For a sinusoidal wave, energy and power are proportional to the square of both the amplitude and the angular frequency.
Waves can also be concentrated or spread out, as characterized by the intensity of the wave. Intensity is directly...
Waves can also be concentrated or spread out, as characterized by the intensity of the wave. Intensity is directly...
3.8K