  We study the thermodynamics of a Brownian particle under the influence of a
time multiplexed harmonic potential of finite width. The memory storage
mechanism and the erasure protocol realized by time multiplexed potentials are
utilized to experimentally realize erasure with work close to the Landauer's
bound. We quantify the work done on the system with respect to the duty-ratio
of time multiplexing, which also provides a handle to approach reversible
erasures. A Langevin dynamics based simulation model is developed for the
proposed memory bit and the erasure protocol, which guides the experimental
realization. The study also provides insights into transport at the micro
scale.
