Related Experiment Video
Updated: Jun 19, 2026

09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Locating sources of Szegedy's quantum network
Hong-Jue Wang1, Zhao-Long Hu2, Shu-Yu Shao3
1School of Information Beijing Wuzi University, 101149 Beijing, People's Republic of China.
Physical Review. E
|February 17, 2024
Summary
We developed a precise quantum network source-location algorithm using compressed sensing for Szegedy
Area of Science:
- Quantum Information Science
- Network Theory
- Applied Mathematics
Background:
- Source localization is crucial for quantum networks, impacting quantum state tomography, computing, and communication.
- Szegedy's quantum networks present unique challenges for source localization.
Purpose of the Study:
- To develop a novel technique for source location in Szegedy's quantum networks.
- To propose a precise and robust algorithm for this task.
Main Methods:
- Developed a linear system evolution model for Szegedy's quantum networks using matrix vectorization.
- Proposed a compressed sensing-based source-location algorithm tailored for these networks.
Main Results:
- Numerical simulations on various networks demonstrated the algorithm's effectiveness and feasibility.
- The algorithm achieved high precision and robustness in source localization tasks.
Conclusions:
- The proposed compressed sensing algorithm is a viable and effective solution for source location in Szegedy's quantum networks.
- Findings support practical applications in quantum communication and computing.
Related Concept Videos
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...
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.
Ampere-Maxwell's Law: Problem-Solving
A parallel-plate capacitor with capacitance C, whose plates have area A and separation distance d, is connected to a resistor R and a battery of voltage V. The current starts to flow at t = 0. What is the displacement current between the capacitor plates at time t? From the properties of the capacitor, what is the corresponding real current?
To solve the problem, we can use the equations from the analysis of an RC circuit and Maxwell's version of Ampère's law.
For the first part of the problem,...
To solve the problem, we can use the equations from the analysis of an RC circuit and Maxwell's version of Ampère's law.
For the first part of the problem,...
Nodal Analysis with Voltage Sources
Nodal analysis is a remarkably effective method used in electrical engineering to simplify the analysis of complex circuits, including those with dependent or independent voltage sources. Its strength lies in its systematic approach to breaking down circuits into manageable components, making it easier for engineers to understand and solve.
Consider a circuit that contains four resistors and two voltage sources, as shown in Figure 1. One of these voltage sources is connected between a...
Consider a circuit that contains four resistors and two voltage sources, as shown in Figure 1. One of these voltage sources is connected between a...
Mesh Analysis with Current Sources
Mesh analysis becomes simpler when analyzing circuits with current sources, whether independent or dependent. The presence of current sources reduces the number of equations required for analysis. Two cases illustrate this:
Current Source in One Mesh: The analysis process is straightforward when a current source is found in only one mesh within the circuit. Mesh currents are assigned as usual, with the mesh containing the current source excluded from the analysis. Kirchhoff's voltage law (KVL)...
Current Source in One Mesh: The analysis process is straightforward when a current source is found in only one mesh within the circuit. Mesh currents are assigned as usual, with the mesh containing the current source excluded from the analysis. Kirchhoff's voltage law (KVL)...
Network Function of a Circuit
Frequency response analysis in electrical circuits provides vital insights into a circuit's behavior as the frequency of the input signal changes. The transfer function, a mathematical tool, is instrumental in understanding this behavior. It defines the relationship between phasor output and input and comes in four types: voltage gain, current gain, transfer impedance, and transfer admittance. The critical components of the transfer function are the poles and zeros.

