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In quantum information theory, quantum discord is a measure of nonclassical correlations between two subsystems of a quantum system. It includes correlations that are due to quantum physical effects but do not necessarily involve quantum entanglement .
The quantum mechanical counterpart of classical probability distributions are modeled with density matrices. Consider a quantum system that can be divided into two parts, A and B, such that independent measurements can be made on either part. The state space of the entire quantum system is then the tensor product of the spaces for the two parts.
Wojciech Hubert Zurek [1] (Polish: Żurek; born 1951) is a Polish and American theoretical physicist and a leading authority on quantum theory, especially decoherence and non-equilibrium dynamics of symmetry breaking and resulting defect generation (known as the Kibble–Zurek mechanism).
In quantum information theory, quantum state merging [1] [2] is the transfer of a quantum state when the receiver already has part of the state. The process optimally transfers partial information using entanglement and classical communication.
The category quantum information science concerns information science that depends on quantum effects in physics. It includes theoretical issues in computational models as well as more experimental topics in quantum computing.
Quantum mechanics is a fundamental theory that describes the behavior of nature at and below the scale of atoms. [2]: 1.1 It is the foundation of all quantum physics, which includes quantum chemistry, quantum field theory, quantum technology, and quantum information science.
Ages: 3+. After polling our on-staff parents, the choice is clear — the Toniebox is the hottest toy of 2024. It's a colorful audio player that plays stories once a character, or Tonie, is placed ...
According to Asher Peres [4] and David Kaiser, [5] the publication of the 1982 proof of the no-cloning theorem by Wootters and Zurek [2] and by Dieks [3] was prompted by a proposal of Nick Herbert [6] for a superluminal communication device using quantum entanglement, and Giancarlo Ghirardi [7] had proven the theorem 18 months prior to the published proof by Wootters and Zurek in his referee ...