INVESTIGADORES
CORMICK Maria Cecilia
artículos
Título:
Ion chains in high-finesse cavities
Autor/es:
CECILIA CORMICK; GIOVANNA MORIGI
Revista:
PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2013 vol. 87 p. 1 - 13
ISSN:
1050-2947
Resumen:
We analyze the dynamics of a chain of singly charged ions confined in a
linear Paul trap and which couple with the mode of a high-finesse
optical resonator. In these settings the ions interact via the Coulomb
repulsion and are subject to the mechanical forces due to scattering of
cavity photons. We show that the interplay of these interactions can
give rise to bistable equilibrium configurations, into which the chain
can be cooled by cavity-enhanced photon scattering. We characterize the
resulting equilibrium structures by determining the stationary state in
the semiclassical limit for both cavity field and crystal motion. The
mean occupation of the vibrational modes at steady state is evaluated,
showing that the vibrational modes coupled to the cavity can be
simultaneously cooled to low occupation numbers. It is also found that
at steady state the vibrations are entangled with the cavity field
fluctuations. The entanglement is quantified by means of the logarithmic
negativity. The spectrum of the light at the cavity output is evaluated
and the features signaling entanglement are identified.