RECONSTRUCTING THE DENSITY OPERATOR VIA SIMPLE PROJECTORS

被引:47
作者
STEUERNAGEL, O [1 ]
VACCARO, JA [1 ]
机构
[1] OPEN UNIV,DEPT PHYS,MILTON KEYNES MK7 6AA,BUCKS,ENGLAND
关键词
D O I
10.1103/PhysRevLett.75.3201
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We describe the representation of arbitrary density operators in terms of expectation values of simple projection operators. Two representations are presented which yield nonrecursive schemes for experimentally determining the density operator of any quantum system. We suggest a possible experimental implementation in quantum optics.
引用
收藏
页码:3201 / 3205
页数:5
相关论文
共 25 条
[21]   MEASUREMENT OF QUANTUM STATES AND THE WIGNER FUNCTION [J].
ROYER, A .
FOUNDATIONS OF PHYSICS, 1989, 19 (01) :3-32
[22]   MEASUREMENT OF THE WIGNER FUNCTION [J].
ROYER, A .
PHYSICAL REVIEW LETTERS, 1985, 55 (25) :2745-2748
[23]   MEASUREMENT OF THE WIGNER DISTRIBUTION AND THE DENSITY-MATRIX OF A LIGHT MODE USING OPTICAL HOMODYNE TOMOGRAPHY - APPLICATION TO SQUEEZED STATES AND THE VACUUM [J].
SMITHEY, DT ;
BECK, M ;
RAYMER, MG ;
FARIDANI, A .
PHYSICAL REVIEW LETTERS, 1993, 70 (09) :1244-1247
[24]  
VACCARO JA, PROBING QUANTUM STAT
[25]   DETERMINATION OF QUASIPROBABILITY DISTRIBUTIONS IN TERMS OF PROBABILITY-DISTRIBUTIONS FOR THE ROTATED QUADRATURE PHASE [J].
VOGEL, K ;
RISKEN, H .
PHYSICAL REVIEW A, 1989, 40 (05) :2847-2849