Direct observation of the quantum fluctuation driven amplitude mode in a microcavity polariton condensate
Abstract
The Higgs amplitude mode is a collective excitation studied and observed in a broad class of matter, including superconductors, charge density waves, antiferromagnets, He-3 p-wave superfluid, and ultracold atomic condensates. In all the observations reported thus far, the amplitude mode was excited by perturbing the condensate out of equilibrium. Studying an exciton-polariton condensate, here, we report the observation of this amplitude mode purely driven by intrinsic quantum fluctuations without such perturbations. By using an ultrahigh quality microcavity and a Raman spectrometer to maximally reject photoluminescence (PL) from the condensate, we observe weak but distinct PL at energies below the condensate emission. We identify this as the so-called ghost branches of the amplitude mode arising from quantum depletion of the condensate into this mode. These energies, as well as the overall structure of the PL spectra, are in good agreement with our theoretical analysis.
- Authors:
-
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Univ. of Chicago, IL (United States); Osaka Univ. (Japan)
- Univ. of Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Univ. of Pittsburgh, PA (United States)
- Princeton Univ., NJ (United States)
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Japan Society for the Promotion of Science (JSPS); Gordon and Betty Moore Foundation; National Science Foundation (NSF)
- OSTI Identifier:
- 1799915
- Alternate Identifier(s):
- OSTI ID: 1819463
- Report Number(s):
- NREL/JA-5K00-75335
Journal ID: ISSN 2469-9950; MainId:6915;UUID:ce976ebe-f2fc-e911-9c29-ac162d87dfe5;MainAdminID:25673; TRN: US2210817
- Grant/Contract Number:
- AC36-08GO28308; AC02-06CH11357; 17J01238; GBMF-4420; DMR-0819860
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 103; Journal Issue: 20; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; amplitude mode; condensate; Higgs mode; microcavity polaritons; quantum fluctuations
Citation Formats
Steger, Mark, Hanai, Ryo, Edelman, Alexander Orson, Littlewood, Peter B., Snoke, David W., Beaumariage, Jonathan, Fluegel, Brian, West, Ken, Pfeiffer, Loren N., and Mascarenhas, Angelo. Direct observation of the quantum fluctuation driven amplitude mode in a microcavity polariton condensate. United States: N. p., 2021.
Web. doi:10.1103/physrevb.103.205125.
Steger, Mark, Hanai, Ryo, Edelman, Alexander Orson, Littlewood, Peter B., Snoke, David W., Beaumariage, Jonathan, Fluegel, Brian, West, Ken, Pfeiffer, Loren N., & Mascarenhas, Angelo. Direct observation of the quantum fluctuation driven amplitude mode in a microcavity polariton condensate. United States. https://doi.org/10.1103/physrevb.103.205125
Steger, Mark, Hanai, Ryo, Edelman, Alexander Orson, Littlewood, Peter B., Snoke, David W., Beaumariage, Jonathan, Fluegel, Brian, West, Ken, Pfeiffer, Loren N., and Mascarenhas, Angelo. Fri .
"Direct observation of the quantum fluctuation driven amplitude mode in a microcavity polariton condensate". United States. https://doi.org/10.1103/physrevb.103.205125. https://www.osti.gov/servlets/purl/1799915.
@article{osti_1799915,
title = {Direct observation of the quantum fluctuation driven amplitude mode in a microcavity polariton condensate},
author = {Steger, Mark and Hanai, Ryo and Edelman, Alexander Orson and Littlewood, Peter B. and Snoke, David W. and Beaumariage, Jonathan and Fluegel, Brian and West, Ken and Pfeiffer, Loren N. and Mascarenhas, Angelo},
abstractNote = {The Higgs amplitude mode is a collective excitation studied and observed in a broad class of matter, including superconductors, charge density waves, antiferromagnets, He-3 p-wave superfluid, and ultracold atomic condensates. In all the observations reported thus far, the amplitude mode was excited by perturbing the condensate out of equilibrium. Studying an exciton-polariton condensate, here, we report the observation of this amplitude mode purely driven by intrinsic quantum fluctuations without such perturbations. By using an ultrahigh quality microcavity and a Raman spectrometer to maximally reject photoluminescence (PL) from the condensate, we observe weak but distinct PL at energies below the condensate emission. We identify this as the so-called ghost branches of the amplitude mode arising from quantum depletion of the condensate into this mode. These energies, as well as the overall structure of the PL spectra, are in good agreement with our theoretical analysis.},
doi = {10.1103/physrevb.103.205125},
journal = {Physical Review. B},
number = 20,
volume = 103,
place = {United States},
year = {Fri May 14 00:00:00 EDT 2021},
month = {Fri May 14 00:00:00 EDT 2021}
}
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