The 2005 Nobel Prize in Physics: Optics
... of intensity interferometry by Hanbury Brown and Twiss in 1956, it became clear that it was necessary to go beyond the two-point amplitude correlation function (adequate to describe Young-type interference phenomena) to higher order correlation functions. Thus intensity correlations involve correl&t ...
... of intensity interferometry by Hanbury Brown and Twiss in 1956, it became clear that it was necessary to go beyond the two-point amplitude correlation function (adequate to describe Young-type interference phenomena) to higher order correlation functions. Thus intensity correlations involve correl&t ...
The Quantum Circuit Model and Universal Quantum Computation
... of computation. To do proper justice to this task, we should probably review the history of the classical theory of computation, and the struggles which the early pioneers in quantum computing went though in order to define a valid model of quantum computing. But we are lucky because a lot of the pi ...
... of computation. To do proper justice to this task, we should probably review the history of the classical theory of computation, and the struggles which the early pioneers in quantum computing went though in order to define a valid model of quantum computing. But we are lucky because a lot of the pi ...
Why the Logical Disjunction in Quantum Logic is Not
... the water at right is also poured out, and hence helps to result in there being more than 10 liters at the left. Indeed, we also know that there cannot be more than 10 liters of water to left and more than 10 liters of water to the right, because the total must equal 20. Our error was to believe tha ...
... the water at right is also poured out, and hence helps to result in there being more than 10 liters at the left. Indeed, we also know that there cannot be more than 10 liters of water to left and more than 10 liters of water to the right, because the total must equal 20. Our error was to believe tha ...
Superconducting phase qubit coupled to a nanomechanical resonator:
... For a qubit with energy level spacing ⌬⑀ coupled with strength g to a resonator with angular frequency 0 and quality factor Q, the RWA is valid when both 兩0 − ⌬⑀ / ប兩 Ⰶ 0 / Q and g Ⰶ ⌬⑀. However, the resonant Rabi frequency, which is proportional to g, is then much smaller than the qubit frequenc ...
... For a qubit with energy level spacing ⌬⑀ coupled with strength g to a resonator with angular frequency 0 and quality factor Q, the RWA is valid when both 兩0 − ⌬⑀ / ប兩 Ⰶ 0 / Q and g Ⰶ ⌬⑀. However, the resonant Rabi frequency, which is proportional to g, is then much smaller than the qubit frequenc ...
The quantum mechanics of photon addition and subtraction
... Myungshik Kim and Marco Bellini Photon subtraction and addition do not obey the rules of conventional arithmetic; however, quantum-mechanical arithmetic can be proven experimentally. In atomic-scale or quantum physics, an electromagnetic field is composed of photons, optical packets so small that a ...
... Myungshik Kim and Marco Bellini Photon subtraction and addition do not obey the rules of conventional arithmetic; however, quantum-mechanical arithmetic can be proven experimentally. In atomic-scale or quantum physics, an electromagnetic field is composed of photons, optical packets so small that a ...
Genetic Programming for Quantum Computers - Faculty
... of active investigation. The smallest unit of quantum information is the qubit, which is analogous to the classical bit. Whereas a classical system of n bits is at any time in one of 2n states, a quantum system of n qubits can be in any linear superposition of ...
... of active investigation. The smallest unit of quantum information is the qubit, which is analogous to the classical bit. Whereas a classical system of n bits is at any time in one of 2n states, a quantum system of n qubits can be in any linear superposition of ...
A system`s wave function is uniquely determined by its
... called here a causal order 3 . More precisely, we prove that Ψ is a function of any complete set of variables that are compatible with free choice with respect to the causal order of Figure 3 (see later for more details). This is stated as Corollary 1. The free choice assumption used captures the id ...
... called here a causal order 3 . More precisely, we prove that Ψ is a function of any complete set of variables that are compatible with free choice with respect to the causal order of Figure 3 (see later for more details). This is stated as Corollary 1. The free choice assumption used captures the id ...
sec_l9_2004student - Pacific Lutheran University
... measuring the value of a qubit and logically manipulating qubits are necessary if a quantum computer is to be constructed. • Here is where the trouble begins – it turns out that at the quantum level measuring something changes it; in addition bits can be manipulated in ways that violate common sense ...
... measuring the value of a qubit and logically manipulating qubits are necessary if a quantum computer is to be constructed. • Here is where the trouble begins – it turns out that at the quantum level measuring something changes it; in addition bits can be manipulated in ways that violate common sense ...
A Crash Course on Quantum Mechanics
... Millikan in 1915. Einstein got the Nobel Prize in 1921 “for his services to Theoretical Physics, and especially for his discovery of the law of the photoelectric effect” and Millikan got the Prize in 1923 “for his work on the elementary charge of electricity and on the photoelectric effect”. To summ ...
... Millikan in 1915. Einstein got the Nobel Prize in 1921 “for his services to Theoretical Physics, and especially for his discovery of the law of the photoelectric effect” and Millikan got the Prize in 1923 “for his work on the elementary charge of electricity and on the photoelectric effect”. To summ ...
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).