Lecture11
... 1. The classical distinction between particles and waves breaks down [“wave-particle duality”]. 2. Physical states are normalized vectors ψ(r), Ψ(r,t), ψ , (t) [ → superposition principle]. ...
... 1. The classical distinction between particles and waves breaks down [“wave-particle duality”]. 2. Physical states are normalized vectors ψ(r), Ψ(r,t), ψ , (t) [ → superposition principle]. ...
“Anticoherent” Spin States via the Majorana Representation
... B. A Tetrahedral Basis in C5 Five tetrahedra can be oriented in space in an interlocking fashion so that their twenty vertices together comprise the vertices of a dodecahedron. (See Fig. 2.) This configuration offers a highly symmetrical way of inscribing five tetrahedra in the sphere. Now, as the t ...
... B. A Tetrahedral Basis in C5 Five tetrahedra can be oriented in space in an interlocking fashion so that their twenty vertices together comprise the vertices of a dodecahedron. (See Fig. 2.) This configuration offers a highly symmetrical way of inscribing five tetrahedra in the sphere. Now, as the t ...
Effects of Decoherence in Quantum Control and Computing
... At t=0, the value of the norm is equal to 0, and then it increases to positive values, with superimposed modulation at the system’s energy-gap frequency. ...
... At t=0, the value of the norm is equal to 0, and then it increases to positive values, with superimposed modulation at the system’s energy-gap frequency. ...
Powerpoint 7/20
... If we consider qubit 1 as one subsystem and qubits 2 and 3 as another subsystem, then the state is separable across this divide However, if we consider qubits 1 and 2 as one system and qubits 3 as one subsystem, then the state is entangled ...
... If we consider qubit 1 as one subsystem and qubits 2 and 3 as another subsystem, then the state is separable across this divide However, if we consider qubits 1 and 2 as one system and qubits 3 as one subsystem, then the state is entangled ...
Philosophy of Science
... The concepts of space, time, and chance have long been of interest to philosophers. This class will investigate how our thinking about these concepts has been shaped by developments in science. We’ll start by discussing the structure of space and time in classical and relativistic physics. We’ll the ...
... The concepts of space, time, and chance have long been of interest to philosophers. This class will investigate how our thinking about these concepts has been shaped by developments in science. We’ll start by discussing the structure of space and time in classical and relativistic physics. We’ll the ...
Quantum Criticality: competing ground states in low
... by a Boltzmann-like transport equation. In metals, the quasiparticles are electrons and holes in the vicinity of the Fermi wavevector, while in 4He they are phonon and roton excitations. The systems we shall consider in this article are delicately poised between two or more distinct states with very ...
... by a Boltzmann-like transport equation. In metals, the quasiparticles are electrons and holes in the vicinity of the Fermi wavevector, while in 4He they are phonon and roton excitations. The systems we shall consider in this article are delicately poised between two or more distinct states with very ...
Document
... In order to perform any real computation, we need gates to act upon the qubits! In classical computation, the familiar gates are not, and, or, xor, and others which take bits as the input(s), and combine them in a logical manner to produce an output. Since the states and operations are entirely diff ...
... In order to perform any real computation, we need gates to act upon the qubits! In classical computation, the familiar gates are not, and, or, xor, and others which take bits as the input(s), and combine them in a logical manner to produce an output. Since the states and operations are entirely diff ...
Slide 1
... “quanta" of energy which we call photons. The quantum of energy for a photon is not Planck's constant h itself, but the product of h and the frequency. The quantization implies that a photon of blue light of given frequency or wavelength will always have the same size quantum of energy. For example, ...
... “quanta" of energy which we call photons. The quantum of energy for a photon is not Planck's constant h itself, but the product of h and the frequency. The quantization implies that a photon of blue light of given frequency or wavelength will always have the same size quantum of energy. For example, ...
Double-slit experiment From Wikipedia, the free encyclopedia Jump
... When two slits are open but something is added to the experiment to allow a determination that a photon has passed through one or the other slit, then the interference pattern disappears and the experimental apparatus yields two simple patterns, one from each slit. (See below.) However, interference ...
... When two slits are open but something is added to the experiment to allow a determination that a photon has passed through one or the other slit, then the interference pattern disappears and the experimental apparatus yields two simple patterns, one from each slit. (See below.) However, interference ...
snapshots 300510
... RELATIVISTIC QUANTUM INFORMATION THEORY When we combine Relativity with Quantum Mechanics we are inexorably lead to the notion of a quantum field. Currently quantum field theories in the setting of curved spacetimes are pushing the frontier of our understanding of the laws of Nature. In recent time ...
... RELATIVISTIC QUANTUM INFORMATION THEORY When we combine Relativity with Quantum Mechanics we are inexorably lead to the notion of a quantum field. Currently quantum field theories in the setting of curved spacetimes are pushing the frontier of our understanding of the laws of Nature. In recent time ...
Bell's theorem
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Bell's theorem is a ‘no-go theorem’ that draws an important distinction between quantum mechanics (QM) and the world as described by classical mechanics. This theorem is named after John Stewart Bell.In its simplest form, Bell's theorem states:Cornell solid-state physicist David Mermin has described the appraisals of the importance of Bell's theorem in the physics community as ranging from ""indifference"" to ""wild extravagance"". Lawrence Berkeley particle physicist Henry Stapp declared: ""Bell's theorem is the most profound discovery of science.""Bell's theorem rules out local hidden variables as a viable explanation of quantum mechanics (though it still leaves the door open for non-local hidden variables). Bell concluded:Bell summarized one of the least popular ways to address the theorem, superdeterminism, in a 1985 BBC Radio interview: