Effect of relativity and vacuum fluctuations on quantum measurement

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2022
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Physical Review D. American Physical Society (APS). 2022, 105, 105027. ISSN 1550-7998. eISSN 2470-0029. Available under: doi: 10.1103/PhysRevD.105.105027
Zusammenfassung

Vacuum fluctuations can obscure the detection signal of the measurement of the smallest quantum objects like single particles seemingly implying a fundamental limit to measurement accuracy. However, as we show relativistic invariance implies the disappearance of fluctuations for the space-like %frequency-wavevector spectrum of an observable at zero temperature. This complete absence of noise can be harnessed to perform noiseless measurement of single particles, as we illustrate for electrons or photons. We outline a general scheme to illustrate the noiseless measurement involving the space-like spectrum of observables based on the self-interference of counter-propagating paths of a single particle in a triangular Sagnac interferometer.

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530 Physik
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Vacuum fluctuations, detection signal, quantum measurement, zero temperature
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ISO 690BEDNORZ, Adam, Wolfgang BELZIG, 2022. Effect of relativity and vacuum fluctuations on quantum measurement. In: Physical Review D. American Physical Society (APS). 2022, 105, 105027. ISSN 1550-7998. eISSN 2470-0029. Available under: doi: 10.1103/PhysRevD.105.105027
BibTex
@article{Bednorz2022-03-23T11:39:25ZEffec-57176,
  year={2022},
  doi={10.1103/PhysRevD.105.105027},
  title={Effect of relativity and vacuum fluctuations on quantum measurement},
  volume={105},
  issn={1550-7998},
  journal={Physical Review D},
  author={Bednorz, Adam and Belzig, Wolfgang},
  note={Article Number: 105027}
}
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