Anomalous time delays and quantum weak measurements in optical micro-resonators

M. Asano, K. Y. Bliokh, Y. P. Bliokh, A. G. Kofman, R. Ikuta, T. Yamamoto, Y. S. Kivshar, L. Yang, N. Imoto, K. Özdemir, F. Nori

Research output: Contribution to journalArticle

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Abstract

Quantum weak measurements, wavepacket shifts and optical vortices are universal wave phenomena, which originate from fine interference of multiple plane waves. These effects have attracted considerable attention in both classical and quantum wave systems. Here we report on a phenomenon that brings together all the above topics in a simple one-dimensional scalar wave system. We consider inelastic scattering of Gaussian wave packets with parameters close to a zero of the complex scattering coefficient. We demonstrate that the scattered wave packets experience anomalously large time and frequency shifts in such near-zero scattering. These shifts reveal close analogies with the Goos-Hänchen beam shifts and quantum weak measurements of the momentum in a vortex wavefunction. We verify our general theory by an optical experiment using the near-zero transmission (near-critical coupling) of Gaussian pulses propagating through a nano-fibre with a side-coupled toroidal micro-resonator. Measurements demonstrate the amplification of the time delays from the typical inverse-resonator-linewidth scale to the pulse-duration scale.

Original languageEnglish (US)
Article number13488
JournalNature communications
Volume7
DOIs
StatePublished - Nov 14 2016

Fingerprint

Resonators
Time delay
time lag
resonators
Wave packets
shift
wave packets
Vortex flow
Scattering
vortices
Wave interference
Inelastic scattering
scattering coefficients
Wave functions
Linewidth
frequency shift
Amplification
Momentum
pulse duration
inelastic scattering

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Asano, M., Bliokh, K. Y., Bliokh, Y. P., Kofman, A. G., Ikuta, R., Yamamoto, T., ... Nori, F. (2016). Anomalous time delays and quantum weak measurements in optical micro-resonators. Nature communications, 7, [13488]. https://doi.org/10.1038/ncomms13488
Asano, M. ; Bliokh, K. Y. ; Bliokh, Y. P. ; Kofman, A. G. ; Ikuta, R. ; Yamamoto, T. ; Kivshar, Y. S. ; Yang, L. ; Imoto, N. ; Özdemir, K. ; Nori, F. / Anomalous time delays and quantum weak measurements in optical micro-resonators. In: Nature communications. 2016 ; Vol. 7.
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Asano, M, Bliokh, KY, Bliokh, YP, Kofman, AG, Ikuta, R, Yamamoto, T, Kivshar, YS, Yang, L, Imoto, N, Özdemir, K & Nori, F 2016, 'Anomalous time delays and quantum weak measurements in optical micro-resonators', Nature communications, vol. 7, 13488. https://doi.org/10.1038/ncomms13488

Anomalous time delays and quantum weak measurements in optical micro-resonators. / Asano, M.; Bliokh, K. Y.; Bliokh, Y. P.; Kofman, A. G.; Ikuta, R.; Yamamoto, T.; Kivshar, Y. S.; Yang, L.; Imoto, N.; Özdemir, K.; Nori, F.

In: Nature communications, Vol. 7, 13488, 14.11.2016.

Research output: Contribution to journalArticle

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Asano M, Bliokh KY, Bliokh YP, Kofman AG, Ikuta R, Yamamoto T et al. Anomalous time delays and quantum weak measurements in optical micro-resonators. Nature communications. 2016 Nov 14;7. 13488. https://doi.org/10.1038/ncomms13488