TY - JOUR
AU - Athreya Shankar
AU - Jarrod Reilly
AU - Simon Jäger
AU - Murray Holland
AB - We show that the onset of steady-state superradiance in a bad cavity laser is preceded by a dissipative phase transition between two distinct phases of steady-state subradiance. The transition is marked by a non-analytic behavior of the cavity output power and the mean atomic inversion, as well as a discontinuity in the variance of the collective atomic inversion. In particular, for repump rates below a critical value, the cavity output power is strongly suppressed and does not increase with the atom number, while it scales linearly with atom number above this value. Remarkably, we find that the atoms are in a macroscopic entangled steady state near the critical region with a vanishing fraction of unentangled atoms in the large atom number limit.
BT - Physical Review Letters
DA - 2021-08
DO - 10.1103/PhysRevLett.127.073603
N2 - We show that the onset of steady-state superradiance in a bad cavity laser is preceded by a dissipative phase transition between two distinct phases of steady-state subradiance. The transition is marked by a non-analytic behavior of the cavity output power and the mean atomic inversion, as well as a discontinuity in the variance of the collective atomic inversion. In particular, for repump rates below a critical value, the cavity output power is strongly suppressed and does not increase with the atom number, while it scales linearly with atom number above this value. Remarkably, we find that the atoms are in a macroscopic entangled steady state near the critical region with a vanishing fraction of unentangled atoms in the large atom number limit.
PY - 2021
EP - 073603
T2 - Physical Review Letters
TI - Subradiant-to-Subradiant Phase Transition in the Bad Cavity Laser
UR - https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.127.073603
VL - 127
ER -