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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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Papers overview

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2014
2014
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
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
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
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
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
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
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
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
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 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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