TY - JOUR
T1 - Cooper pair polaritons in cold fermionic atoms within a cavity
AU - Dodel, Amaury
AU - Pikovski, Alexander
AU - Ermakov, Igor
AU - Narozniak, Marek
AU - Ivannikov, Valentin
AU - Wu, Haibin
AU - Byrnes, Tim
N1 - Publisher Copyright:
© 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2020/2
Y1 - 2020/2
N2 - We formulate a Bardeen-Cooper-Schriffer (BCS) theory of quasiparticles in a degenerate Fermi gas strongly coupled to photons in a optical cavity. The elementary photonic excitations of the system are cavity polaritons, which consist of a cavity photon and an excitation of an atom within the Fermi sea. The excitation of the atom out of the Fermi sea leaves behind a hole, which together results in a loosely bound Cooper pair, allowing for the system to be written by a BCS wave function. As the density of the excitations is increased, the excited atom and hole become more strongly bound, crossing over into the molecular regime. This thus realizes an alternative BCS to BEC crossover scenario, where the participating species are quasiparticle excitations in a Fermi sea consisting of excited atoms and holes.
AB - We formulate a Bardeen-Cooper-Schriffer (BCS) theory of quasiparticles in a degenerate Fermi gas strongly coupled to photons in a optical cavity. The elementary photonic excitations of the system are cavity polaritons, which consist of a cavity photon and an excitation of an atom within the Fermi sea. The excitation of the atom out of the Fermi sea leaves behind a hole, which together results in a loosely bound Cooper pair, allowing for the system to be written by a BCS wave function. As the density of the excitations is increased, the excited atom and hole become more strongly bound, crossing over into the molecular regime. This thus realizes an alternative BCS to BEC crossover scenario, where the participating species are quasiparticle excitations in a Fermi sea consisting of excited atoms and holes.
UR - https://www.scopus.com/pages/publications/85098105839
U2 - 10.1103/PhysRevResearch.2.013184
DO - 10.1103/PhysRevResearch.2.013184
M3 - 文章
AN - SCOPUS:85098105839
SN - 2643-1564
VL - 2
JO - Physical Review Research
JF - Physical Review Research
IS - 1
M1 - 013184
ER -