Foundational object in quantum communication theory
In quantum information theory, a quantum channel is a communication channel which can transmit quantum information, as well as classical information. An example of quantum information is the state of a qubit. An example of classical information is a text document transmitted over the Internet.
More formally, quantum channels are completely positive (CP) trace-preserving maps between spaces of operators. In other words, a quantum channel is just a quantum operation viewed not merely as the reduced dynamics of a system but as a pipeline intended to carry quantum information. (Some authors use the term "quantum operation" to also include trace-decreasing maps while reserving "quantum channel" for strictly trace-preserving maps.[1])
In quantum information theory, a quantumchannel is a communication channel which can transmit quantum information, as well as classical information....
A quantum depolarizing channel is a model for quantum noise in quantum systems. The d {\displaystyle d} -dimensional depolarizing channel can be viewed...
to investigate quantum teleportation is "Teleporting an Unknown Quantum State via Dual Classical and Einstein-Podolsky-Rosen Channels" published by C...
Quantum key distribution (QKD) is a secure communication method that implements a cryptographic protocol involving components of quantum mechanics. It...
Quantum information is the information of the state of a quantum system. It is the basic entity of study in quantum information theory, and can be manipulated...
Quantum cryptography is the science of exploiting quantum mechanical properties to perform cryptographic tasks. The best known example of quantum cryptography...
Quantum error correction (QEC) is used in quantum computing to protect quantum information from errors due to decoherence and other quantum noise. Quantum...
In quantum information science, a classical information channel (often called simply classical channel) is a communication channel that can be used to...
In the theory of quantum communication, an amplitude damping channel is a quantumchannel that models physical processes such as spontaneous emission....
In the context of quantum computation, a quantum operation is called a quantumchannel. Note that some authors use the term "quantum operation" to refer...
A quantum computer is a computer that takes advantage of quantum mechanical phenomena. On small scales, physical matter exhibits properties of both particles...
In quantum physics, a measurement is the testing or manipulation of a physical system to yield a numerical result. A fundamental feature of quantum theory...
In quantum computing, a quantum algorithm is an algorithm that runs on a realistic model of quantum computation, the most commonly used model being the...
two quantumchannels (one channel for spin up and one channel for spin down) if the probability for transmitting an electron that enters the channel is...
This glossary of quantum computing is a list of definitions of terms and concepts used in quantum computing, its sub-disciplines, and related fields. Bacon–Shor...
noisy quantumchannel from a sender to a receiver. It is also equal to the highest rate at which entanglement can be generated over the channel, and forward...
Quantum machine learning is the integration of quantum algorithms within machine learning programs. The most common use of the term refers to machine learning...
The quantum mind or quantum consciousness is a group of hypotheses proposing that local physical laws and interactions from classical mechanics or connections...
Quantum optics is a branch of atomic, molecular, and optical physics dealing with how individual quanta of light, known as photons, interact with atoms...
In quantum computing, the quantum Fourier transform (QFT) is a linear transformation on quantum bits, and is the quantum analogue of the discrete Fourier...
In quantum computing, quantum supremacy or quantum advantage is the goal of demonstrating that a programmable quantum computer can solve a problem that...
The quantum Hall effect (or integer quantum Hall effect) is a quantized version of the Hall effect which is observed in two-dimensional electron systems...
In quantum computing, a qubit (/ˈkjuːbɪt/) or quantum bit is a basic unit of quantum information—the quantum version of the classic binary bit physically...
from threats on quantumchannel links. Quantum cryptography Andreas Poppe, Momtchil Peev, Oliver Maurhart, "Outline of the SECOQC Quantum-Key-Distribution...
In quantum computing and specifically the quantum circuit model of computation, a quantum logic gate (or simply quantum gate) is a basic quantum circuit...
Global Information