Related Experiment Video
Updated: Nov 27, 2025
09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
14.8K
Probabilistic Resumable Quantum Teleportation of a Two-Qubit Entangled State
Zhan-Yun Wang1, Yi-Tao Gou2, Jin-Xing Hou3,4
1School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.
Entropy (Basel, Switzerland)
|December 3, 2020
Summary
This study introduces a generalized quantum teleportation protocol for two-qubit entangled states using partially entangled particles. A novel probabilistic resumable scheme ensures the teleported state is recoverable upon failure, enabling repeated attempts with weak or strong entanglement channels.
Area of Science:
- Quantum Information Science
- Quantum Communication
Background:
- Quantum teleportation enables the transfer of quantum states between distant locations.
- Entangled particles are crucial resources for quantum communication protocols.
Purpose of the Study:
- To present a generalized quantum teleportation protocol for two-qubit entangled states.
- To develop a probabilistic resumable scheme for robust quantum state transfer.
Main Methods:
- Utilizing two pairs of partially entangled particles as the quantum channel.
- Analyzing the optimal probability of successful teleportation based on superposition coefficients.
- Implementing a resumable scheme to recover the teleported state upon failure.
Main Results:
- The optimal teleportation probability is dictated by the smallest superposition coefficient of the quantum channel.
- The proposed resumable scheme allows for state recovery and repeated teleportation attempts.
- Both weak and strong entanglement channels can be effectively used for successful teleportation through repetition.
Conclusions:
- The generalized protocol and resumable scheme enhance the feasibility of two-qubit entangled state teleportation.
- Information loss is prevented in failed teleportation attempts, allowing for iterative processes.
- This work expands the applicability of quantum teleportation using various entanglement strengths in quantum channels.
Related Concept Videos
00:59Propagation of Uncertainty from Random Error
1.5K
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...
1.5K
01:10Entropy Change in Reversible Processes
3.0K
In the Carnot engine, which achieves the maximum efficiency between two reservoirs of fixed temperatures, the total change in entropy is zero. The observation can be generalized by considering any reversible cyclic process consisting of many Carnot cycles. Thus, it can be stated that the total entropy change of any ideal reversible cycle is zero.
The statement can be further generalized to prove that entropy is a state function. Take a cyclic process between any two points on a p-V diagram.
The statement can be further generalized to prove that entropy is a state function. Take a cyclic process between any two points on a p-V diagram.
3.0K
04:08The Uncertainty Principle
30.2K
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...
30.2K
02:45The Quantum-Mechanical Model of an Atom
55.1K
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.
55.1K
01:20Entropy and the Second Law of Thermodynamics
4.0K
The second law of thermodynamics can be stated quantitatively using the concept of entropy. Entropy is the measure of disorder of the system.
The relation between entropy and disorder can be illustrated with the example of the phase change of ice to water. In ice, the molecules are located at specific sites giving a solid state, whereas, in a liquid form, these molecules are much freer to move. The molecular arrangement has therefore become more randomized. Although the change in average...
The relation between entropy and disorder can be illustrated with the example of the phase change of ice to water. In ice, the molecules are located at specific sites giving a solid state, whereas, in a liquid form, these molecules are much freer to move. The molecular arrangement has therefore become more randomized. Although the change in average...
4.0K
01:10Propagation of Uncertainty from Systematic Error
1.1K
The atomic mass of an element varies due to the relative ratio of its isotopes. A sample's relative proportion of oxygen isotopes influences its average atomic mass. For instance, if we were to measure the atomic mass of oxygen from a sample, the mass would be a weighted average of the isotopic masses of oxygen in that sample. Since a single sample is not likely to perfectly reflect the true atomic mass of oxygen for all the molecules of oxygen on Earth, the mass we obtain from this...
1.1K