Quantum Optical Engineering
... one particle is subjected to a measurement does the state of the other become well determined. These are the basic phenomena of quantum weirdness. It is perhaps counter-intuitive but it is exactly these weird parts of quantum theory that offer the greatest promise for technological breakthrough. The ...
... one particle is subjected to a measurement does the state of the other become well determined. These are the basic phenomena of quantum weirdness. It is perhaps counter-intuitive but it is exactly these weird parts of quantum theory that offer the greatest promise for technological breakthrough. The ...
simulate quantum systems
... systems hinges on the exponential growth of the size of Hilbert space with the number of particles in the system. Keeping track of all degrees of freedom is thus a computationally expensive problem (e.g., the dimension of the Hilbert space of 20 qubits is > 106 ). As a result, classical computers ca ...
... systems hinges on the exponential growth of the size of Hilbert space with the number of particles in the system. Keeping track of all degrees of freedom is thus a computationally expensive problem (e.g., the dimension of the Hilbert space of 20 qubits is > 106 ). As a result, classical computers ca ...
Quantum mechanics is the theory that we use to describe the
... Quantum mechanics is the theory that we use to describe the microscopic world, which the classical Newtonian mechanical theory is unsuccessful at explaining. The microscopic world is the realm of atoms, photons, nuclei, electrons, neutrons, and a whole host of other subatomic particles. These partic ...
... Quantum mechanics is the theory that we use to describe the microscopic world, which the classical Newtonian mechanical theory is unsuccessful at explaining. The microscopic world is the realm of atoms, photons, nuclei, electrons, neutrons, and a whole host of other subatomic particles. These partic ...
Chapter 31 Quantum Mechanics and Atomic Physics
... Such integer number is called a quantum number. Quantum mechanics describes the hydrogen atom in terms of four quantum numbers: (1) the principal quantum number n, which can have the integer values n = 1, 2, 3, ...; (2) the orbital quantum number l , which can have values l = 0, 1, 2, ..., (n 1); (3 ...
... Such integer number is called a quantum number. Quantum mechanics describes the hydrogen atom in terms of four quantum numbers: (1) the principal quantum number n, which can have the integer values n = 1, 2, 3, ...; (2) the orbital quantum number l , which can have values l = 0, 1, 2, ..., (n 1); (3 ...
Quantum teleportation
Quantum teleportation is a process by which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location. Because it depends on classical communication, which can proceed no faster than the speed of light, it cannot be used for faster-than-light transport or communication of classical bits. It also cannot be used to make copies of a system, as this violates the no-cloning theorem. While it has proven possible to teleport one or more qubits of information between two (entangled) atoms, this has not yet been achieved between molecules or anything larger.Although the name is inspired by the teleportation commonly used in fiction, there is no relationship outside the name, because quantum teleportation concerns only the transfer of information. Quantum teleportation is not a form of transportation, but of communication; it provides a way of transporting a qubit from one location to another, without having to move a physical particle along with it.The seminal paper first expounding the idea was published by C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres and W. K. Wootters in 1993. Since then, quantum teleportation was first realized with single photons and later demonstrated with various material systems such as atoms, ions, electrons and superconducting circuits. The record distance for quantum teleportation is 143 km (89 mi).