Construction of quantum states by special superpositions of coherent states

被引：7

作者：

Adam, P. ^{[1
,2
]}

Molnar, E. ^{[2
]}

Mogyorosi, G. ^{[2
]}

Varga, A. ^{[2
]}

Mechler, M. ^{[3
]}

Janszky, J. ^{[1
,2
]}

机构：

[1] Hungarian Acad Sci, Inst Solid State Phys & Opt, Wigner Res Ctr Phys, H-1525 Budapest, Hungary

[2] Univ Pecs, Inst Phys, H-7624 Pecs, Hungary

[3] MTA PTE High Field Terahertz Res Grp, H-7624 Pecs, Hungary

来源：

PHYSICA SCRIPTA | 2015年 / 90卷 / 07期

基金：

匈牙利科学研究基金会;

关键词：

coherent-state superpositions; quantum state engineering; nonclassical states; SCHRODINGER-CAT STATES; FOCK STATES; SQUEEZED STATES; ELECTROMAGNETIC-FIELD; TRAVELING FIELDS; RADIATION-FIELD; TRAPPED ION; SINGLE-ATOM; GENERATION; CAVITY;

D O I：

10.1088/0031-8949/90/7/074021

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the optimal approximation of certain quantum states of a harmonic oscillator with the superposition of a finite number of coherent states in phase space placed either on an ellipse or on a certain lattice. These scenarios are currently experimentally feasible. The parameters of the ellipse and the lattice and the coefficients of the constituent coherent states are optimized numerically, via a genetic algorithm, in order to obtain the best approximation. It is found that for certain quantum states the obtained approximation is better than the ones known from the literature thus far.

引用

页数：11

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