Uncertainty relations for generalized quantum measurements and completely positive maps

被引:0
作者
Ozwaw, M [1 ]
机构
[1] Tohoku Univ, Grad Sch Informat Sci, Aoba Ku, Sendai, Miyagi 9808579, Japan
来源
2003 INTERNATIONAL CONFERENCE PHYSICS AND CONTROL, VOLS 1-4, PROCEEDINGS: VOL 1: PHYSICS AND CONTROL: GENERAL PROBLEMS AND APPLICATIONS; VOL 2: CONTROL OF OSCILLATIONS AND CHAOS; VOL 3: CONTROL OF MICROWORLD PROCESSES. NANO- AND FEMTOTECHNOLOGIES; VOL 4: NONLINEAR DYNAMICS AND CONTROL | 2003年
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中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The Heisenberg uncertainty relation for measurement, noise and disturbance states that, any position measurement with noise epsilon brings the momentum disturbance not less than h/2epsilon, However, this relation holds only for restricted class of measurements. Here, a generalized uncertainty relation for measurement noise and disturbance is formalized and proven, which holds for all the possible quantum measurements.. For this purpose, all the possible quantum measurements are characterized by naturally acceptable axioms. The measurement noise and disturbance are defined rigorously for any such general quantum measurements.
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页码:773 / 784
页数:12
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