Inner composition law of pure states as a purification of impure states

被引：18
作者：
Man'ko, VI
Marmo, G
Sudarshan, ECG
Zaccaria, F
机构：
[1] Univ Naples Federico II, Dipartimento Sci Fis, I-80125 Naples, Italy
[2] Univ Texas, Dept Phys, Ctr Particle Phys, Austin, TX 78712 USA
来源：
PHYSICS LETTERS A | 2000年 / 273卷 / 1-2期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1016/S0375-9601(00)00432-1
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Quantum interference is described in term of density operators only using a formulated composition law for pure-state density operators. In order to retain the relative phases in quantum mechanics, we use fiducial vectors and fiducial projectors. These aspects are illustrated in terms of quantum tomography and density operators. Entanglement is determined in terms of a phase-dependent multiplication. (C) 2000 Published by Elsevier Science B.V.
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收藏
页码：31 / 36
页数：6
相关论文
共 28 条
[1]   Origin and restoration of missing interference in emission in a laser-driven V system [J].
Agarwal, GS .
PHYSICAL REVIEW A, 1998, 58 (01) :686-689
[2]  
[Anonymous], 1927, GOTTINGENISCHE NACHR
[3]  
Dirac P.A.M., 1958, The Principles of Quantum Mechanics
[4]   EVEN AND ODD COHERENT STATES AND EXCITATIONS OF A SINGULAR OSCILLATOR [J].
DODONOV, VV ;
MALKIN, IA ;
MANKO, VI .
PHYSICA, 1974, 72 (03) :597-615
[5]   Positive distribution description for spin states [J].
Dodonov, VV ;
Manko, VI .
PHYSICS LETTERS A, 1997, 229 (06) :335-339
[6]   COHERENT AND INCOHERENT STATES OF RADIATION FIELD [J].
GLAUBER, RJ .
PHYSICAL REVIEW, 1963, 131 (06) :2766-+
[7]   A NEW PHASE-SPACE DISTRIBUTION FUNCTION IN STATISTICAL THEORY OF ELECTROMAGNETIC FIELD [J].
KANO, Y .
JOURNAL OF MATHEMATICAL PHYSICS, 1965, 6 (12) :1913-+
[8]  
Kodi H., 1940, P PHYS-MATH SOC JPN, V22, P264, DOI DOI 10.11429/PPMSJ1919.22.4_264
[9]   On the relation between Schrodinger and von Neumann equations [J].
Man'ko, VI ;
Marmo, G ;
Sudarshan, ECG ;
Zaccaria, F .
JOURNAL OF RUSSIAN LASER RESEARCH, 1999, 20 (05) :421-437
[10]   Non-commutative time-frequency tomography [J].
Man'ko, VI ;
Mendes, RV .
PHYSICS LETTERS A, 1999, 263 (1-2) :53-61
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