In quantum mechanics, a Fock state or number state is a quantum state that is an element of a Fock space with a well-defined number of particles (or quanta)...
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Klein–Gordon equation. He gave his name to Fock space, the Fock representation and Fock state, and developed the Hartree–Fock method in 1930. He made many subsequent...
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respectively). A general state in Fock space is a linear combination of n-particle states, one for each n. Technically, the Fock space is (the Hilbert space...
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by Pascual Jordan and Vladimir Fock. In this approach, the quantum many-body states are represented in the Fock state basis, which are constructed by...
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Causal fermion systems (section A fermionic Fock state)
Moreover, it comprises quantum objects like wave functions and a fermionic Fock state. Inspired by the Langrangian formulation of classical field theory, the...
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Quasiprobability distribution (section Fock state)
however, the quantum system has no classical analog, e.g. an incoherent Fock state or entangled system, then P is negative somewhere or more singular than...
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function and the energy of a quantum many-body system in a stationary state. The Hartree–Fock method often assumes that the exact N-body wave function of the...
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Fock state (e.g. a single photon) is the most particle-like state; it has a fixed number of particles, and phase is indeterminate. A coherent state distributes...
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The Gorch Fock is a tall ship of the German Navy (Deutsche Marine), built in 1958 as a replacement for the original Gorch Fock built in 1933 which was...
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Vladimir Fock: Fock matrix Fock operator Fock model Fock representation Fock space Bargmann–Fock space Fock state Fock symmetry Fock–Lorentz symmetry Fock–Schwinger...
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\rangle _{\nu }=|\phi _{1},\phi _{2},\cdots ,\phi _{n}\rangle _{\nu }} be a Fock state, composed of single-particle states | ϕ i ⟩ {\displaystyle |\phi _{i}\rangle...
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Quantum entanglement (redirect from Entangled state)
mode". Finally, there also exist twin Fock states for bosonic modes, which can be created by feeding a Fock state into two arms leading to a beam splitter...
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into one object (a Fock state), and then describe the "evolution" of this state over time using the interaction picture. The Fock space is spanned by...
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Gorch Fock I (ex Tovarishch, ex Gorch Fock) is a German three-mast barque, the first of a series built as school ships for the German Reichsmarine in 1933...
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Qubit (redirect from Pure qubit state)
of the classic binary bit physically realized with a two-state device. A qubit is a two-state (or two-level) quantum-mechanical system, one of the simplest...
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Bellini, Marco (2004). "Tomographic reconstruction of the single-photon Fock state by high-frequency homodyne detection". Physical Review A. 70 (5): 053821...
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Klein–Gordon equation (redirect from Klein–Fock–Gordon equation)
The Klein–Gordon equation (Klein–Fock–Gordon equation or sometimes Klein–Gordon–Fock equation) is a relativistic wave equation, related to the Schrödinger...
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collapse zero-point energy bound state coherent state squeezed coherent state density state Fock state, Fock space vacuum state quasinormal mode no-cloning...
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mechanics Observable Operator (physics) Quantum state Pure state Fock state, Fock space Density state Coherent state Heisenberg picture Density matrix Quantum...
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Computational chemistry (section Hartree-Fock method)
single Fock state that minimizes the energy. NP-hard or NP-complete as demonstrated by embedding instances of the Ising model into Hartree-Fock calculations...
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Collider. In modern physics notation, the quantum state of the electromagnetic field is written as a Fock state, a tensor product of the states for each electromagnetic...
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In the Hartree–Fock method of quantum mechanics, the Fock matrix is a matrix approximating the single-electron energy operator of a given quantum system...
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computational chemistry, post–Hartree–Fock (post-HF) methods are the set of methods developed to improve on the Hartree–Fock (HF), or self-consistent field (SCF)...
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Particle number (category State functions)
the particle number operator (see Fock state) is conjugate to the phase of the classical wave (see coherent state). One measure of air pollution used...
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})^{n}|0\rangle =n(a^{\dagger })^{n}|0\rangle .} A photon number state (or a Fock state) is an eigenstate of the number operator. This is why the formalism...
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explicitly shows that the pure SMSV consists entirely of even-photon Fock state superpositions. Single mode squeezed states are typically generated by...
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predicted the sampling problem had similar complexity for inputs other than Fock-state photons and identified a transition in computational complexity from classically...
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Unrestricted Hartree–Fock (UHF) theory is the most common molecular orbital method for open shell molecules where the number of electrons of each spin...
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Dirk Fock (19 June 1858 – 17 October 1941) was a Dutch politician and diplomat of the defunct Liberal State Party (LSP) now merged into the People's Party...
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e. the states |01⟩ and |10⟩ in the occupation number representation (Fock state) of two modes. Using these resources it is possible to implement any single...
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