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)...

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...

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...

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...

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...

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...

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...

Moreover, it comprises quantum objects like wave functions and a fermionic Fock state. Inspired by the Langrangian formulation of classical field theory, the...

Vladimir Fock: Fock matrix Fock operator Fock model Fock representation Fock space Bargmann–Fock space Fock state Fock symmetry Fock–Lorentz symmetry Fock–Schwinger...

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...

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...

\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...

of the classic binary bit physically realized with a two-state device. A qubit is a two-state (or two-level) quantum-mechanical system, and is one of the...

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...

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...

Bellini, Marco (2004). "Tomographic reconstruction of the single-photon Fock state by high-frequency homodyne detection". Physical Review A. 70 (5): 053821...

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...

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...

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...

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...

The Klein–Gordon equation (Klein–Fock–Gordon equation or sometimes Klein–Gordon–Fock equation) is a relativistic wave equation, related to the Schrödinger...

collapse zero-point energy bound state coherent state squeezed coherent state density state Fock state, Fock space vacuum state quasinormal mode no-cloning...

mechanics Observable Operator (physics) Quantum state Pure state Fock state, Fock space Density state Coherent state Heisenberg picture Density matrix Quantum...

explicitly shows that the pure SMSV consists entirely of even-photon Fock state superpositions. Single mode squeezed states are typically generated by...

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...

defined in the number (Fock) basis. Notice that if we add the two states together, the resulting cat state only contains even Fock state terms: | c a t e ⟩...

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)...

Unrestricted Hartree–Fock (UHF) theory is the most common molecular orbital method for open shell molecules where the number of electrons of each spin...

})^{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...

described by the Fock states, so, for example | 0 ⟩ a {\displaystyle |0\rangle _{a}} corresponds to mode a empty (the vacuum state), and inserting one...