Weak Value Measurement with an Incoherent Measuring Device

Title
Weak Value Measurement with an Incoherent Measuring Device
Authors
조영욱임향택라영식김윤호
Issue Date
2010-02
Publisher
New journal of physics
Citation
VOL 12-023036-10
Abstract
In the Aharonov– Albert– Vaidman (AAV) weak measurement, it is assumed that the measuring device or the pointer is in a quantum mechanical pure state. In reality, however, it is often not the case. In this paper, we generalize the AAV weak measurement scheme to include more generalized situations in which the measuring device is in a mixed state. We also report an optical implementation of the weak value measurement in which the incoherent pointer is realized with the pseudo-thermal light. The theoretical and experimental results show that the measuring device under the influence of partial decoherence could still be used for amplified detection of minute physical changes and is applicable for implementing the weak value measurement for massive particles.
URI
http://pubs.kist.re.kr/handle/201004/69887
ISSN
1367-2630
Appears in Collections:
KIST Publication > Article
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