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Particle number operator

Known as: Number operator, Particle number operators 
In quantum mechanics, for systems where the total number of particles may not be preserved, the number operator is the observable that counts the… Expand
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Related topics

Related topics

12 relations
Basis (linear algebra)Creation and annihilation operatorsEigenstate thermalization hypothesisFock space
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Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
2014
2014
Controlling several atoms in a cavity
We treat control of several two-level atoms interacting with one mode of the electromagnetic field in a cavity. This provides a… Expand
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2011
2011
Quasibosons composed of two q-fermions: realization by deformed oscillators
Composite bosons, here called quasibosons (e.g. mesons, excitons, etc), occur in various physical situations. Quasibosons differ… Expand
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Highly Cited
2009
Highly Cited
2009
Engineering quantum operations on traveling light beams by multiple photon addition and subtraction
We propose and investigate an optical scheme for probabilistic implementation of an arbitrary single-mode quantum operation that… Expand
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Highly Cited
2003
Highly Cited
2003
Generation of entangled coherent states via cross-phase-modulation in a double electromagnetically induced transparency regime
The generation of an entangled coherent state is one of the most important ingredients of quantum information processing using… Expand
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2002
2002
Moyal Formulation of Witten's Star Product in the Fermionic Ghost Sector
In this paper, we recast the fermionic ghost sector of Witten's open bosonic string field theory in the language of… Expand
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Highly Cited
1999
Highly Cited
1999
Counting BPS black holes in toroidal Type II string theory
We derive a $U$-duality invariant formula for the degeneracies of BPS multiplets in a D1-D5 system for toroidal compactification… Expand
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Highly Cited
1992
Highly Cited
1992
Introduction to Algebraic and Constructive Quantum Field Theory
The authors present a rigorous treatment of the first principles of the algebraic and analytic core of quantum field theory… Expand
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Highly Cited
1989
Highly Cited
1989
The quantum group SUq(2) and a q-analogue of the boson operators
A new realisation of the quantum group SUq(2) is constructed by means of a q-analogue to the Jordan-Schwinger mapping… Expand
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1989
1989
Cutoff rate for the M-ary PSK modulation channel with optimal quantum detection
The cutoff rate R/sub 0/ of an optical channel transmitting M-ary phase-shift-keyed coherent states is calculated for a receiver… Expand
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Highly Cited
1985
Highly Cited
1985
The spectrum of the S^5 compactification of the chiral N=2, D=10 supergravity and the unitary supermultiplets of U(2,2/4)
The authors calculate the spectrum of the S5 compactification of the chiral N=2, D=10 supergravity theory. The modes on S5 fall… Expand
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