期刊
PHYSICAL REVIEW LETTERS
卷 124, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.110402
关键词
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资金
- Unipv, Blue sky [BSR1718573]
- FQXi [RFP-1513]
- Attract Grant [777222]
- National Science Centre, Poland [2018/31/B/ST2/00349]
We propose a time-of-arrival operator in quantum mechanics by conditioning on a quantum clock. This allows us to bypass some of the problems of previous proposals, and to obtain a Hermitian time of arrival operator whose probability distribution arises from the Born rule and which has a clear physical interpretation. The same procedure can be employed to measure the time at which some event happens for arbitrary events (and not just specifically for the arrival time of a particle).
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