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Four-wave mixing with anti-parity-time symmetry in hot 85Rb vapor

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/5.0173354· OSTI ID:2283897
 [1];  [2];  [3];  [4];  [4];  [5]
  1. College of William and Mary, Williamsburg, VA (United States); University of Texas at Dallas
  2. National Inst. of Standards and Technology (NIST), Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States)
  3. Kennesaw State University, Marietta, GA (United States)
  4. Univ. of Texas at Dallas, Richardson, TX (United States)
  5. College of William and Mary, Williamsburg, VA (United States)

Here, we report an experimental demonstration of anti-parity-time symmetric optical four-wave mixing in thermal rubidium vapor, where the propagation of probe and stokes fields in a double-Λ scheme is governed by a non-Hermitian Hamiltonian. We are particularly interested in studying quantum intensity correlations between the two fields near the exceptional point, taking into account loss and accompanied Langevin noise. Our experimental measurements of classical four-wave mixing gain and the associated two-mode relative-intensity squeezing are in reasonable agreement with the theoretical predictions.

Research Organization:
Univ. of Texas at Dallas, Richardson, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
Grant/Contract Number:
SC0022069
OSTI ID:
2283897
Alternate ID(s):
OSTI ID: 3000273
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 4 Vol. 124; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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