The Power of Quantum Advice
... Idea: Take some advice resource (such as a coin or a quantum state), and simulate it using a short classical string, together with a polynomial number of untrusted advice resources. In other words, all the relevant information in the advice resource gets packed into an ordinary string (which we say ...
... Idea: Take some advice resource (such as a coin or a quantum state), and simulate it using a short classical string, together with a polynomial number of untrusted advice resources. In other words, all the relevant information in the advice resource gets packed into an ordinary string (which we say ...
One Hundred Years of Quantum Physics By Daniel
... • Dirac laid the foundations of quantum field theory by providing a quantum description of the electromagnetic field. • Bohr announced the complementarity principle, a philosophical principle that helped to resolve apparent paradoxes of quantum theory, particularly wave-particle duality. The princip ...
... • Dirac laid the foundations of quantum field theory by providing a quantum description of the electromagnetic field. • Bohr announced the complementarity principle, a philosophical principle that helped to resolve apparent paradoxes of quantum theory, particularly wave-particle duality. The princip ...
Atoms: Some Basics
... Neutral atoms consist of a heavy nucleus with charge Z surrounded by Z electrons. Positively charged atomic ions generally have structure similar to the atom with the same number of electrons except for a scale factor; negative ions lack the attractive Coulomb interaction at large electron-core sepa ...
... Neutral atoms consist of a heavy nucleus with charge Z surrounded by Z electrons. Positively charged atomic ions generally have structure similar to the atom with the same number of electrons except for a scale factor; negative ions lack the attractive Coulomb interaction at large electron-core sepa ...
Quantum Entanglement and the Geometry of Spacetime
... Simplest solution to Einstein equation is anti-de Sitter (AdS) spacetime. ...
... Simplest solution to Einstein equation is anti-de Sitter (AdS) spacetime. ...
Narrowband polarization-entangled photon pairs distributed over a
... where ωp, ωs and ωi are the pump, signal and idler frequencies respectively and φ is the total phase difference of the two polarization components. The polarization state of the 809 nm photon is measured locally at Alice’s side while the 1555 nm photon is sent over optical telecom fiber to Bob, who ...
... where ωp, ωs and ωi are the pump, signal and idler frequencies respectively and φ is the total phase difference of the two polarization components. The polarization state of the 809 nm photon is measured locally at Alice’s side while the 1555 nm photon is sent over optical telecom fiber to Bob, who ...
Classical limit and quantum logic - Philsci
... 1989). Generally, this limit is studied for systems that, due to its interaction with the environment, develop a process known as quantum decoherence (Schlosshauer 2007). The mathematical description of this phenomenon is usually based on the Schrödinger picture, in which states evolve in time, whil ...
... 1989). Generally, this limit is studied for systems that, due to its interaction with the environment, develop a process known as quantum decoherence (Schlosshauer 2007). The mathematical description of this phenomenon is usually based on the Schrödinger picture, in which states evolve in time, whil ...
Stapp-Compatibility
... system below the cut until the time of the later observation. At this later time one generally finds that the evolved state of the system below the cut cannot be matched to any conceivable classical description of the properties visible to observers. In order to use the theory the experimenter must ...
... system below the cut until the time of the later observation. At this later time one generally finds that the evolved state of the system below the cut cannot be matched to any conceivable classical description of the properties visible to observers. In order to use the theory the experimenter must ...
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).