Production of Fock Mixtures in Trapped Ions for Motional Metrology
Metadatos
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2022-02-01Referencia bibliográfica
Published version: Antonis Delakouras et al. 2024. Quantum Sci. Technol. 9 015006. [DOI: 10.1088/2058-9565/ad01d7]
Patrocinador
Ministerio de Ciencia, Innovación y Universidades (Spain) BEAGAL18/00081; Junta de Andalucía P18-FR-3432Resumen
We present a protocol to produce a class of non-thermal Fock state
mixtures in trapped ions. This class of states features a clear metrological advantage
with respect to the ground state, thus overcoming the standard quantum limit without
the need for full sideband cooling and Fock-state preparation on a narrow electronic
transition. The protocol consists in the cyclic repetition of red-sideband, measurement
and preparation laser pulses. By means of the Kraus map representation of the
protocol, it is possible to relate the length of the red sideband pulses to the specific
class of states that can be generated. With the help of numerical simulations, we
analyze the parametric regime where these states can be reliably reproduced.