Robust dynamical exchange cooling with trapped ions
- URL: http://arxiv.org/abs/2002.04627v2
- Date: Tue, 31 Mar 2020 14:40:39 GMT
- Title: Robust dynamical exchange cooling with trapped ions
- Authors: Tobias S\"agesser, Roland Matt, Robin Oswald, Jonathan P. Home
- Abstract summary: We investigate theoretically the possibility for robust and fast cooling of a trapped atomic ion by transient interaction with a pre-cooled ion.
The transient coupling is achieved through dynamical control of the ions' equilibrium positions.
For settings appropriate to a currently operational trap in our laboratory, we find that robust performance could be achieved down to $6.3$ motional cycles.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We investigate theoretically the possibility for robust and fast cooling of a
trapped atomic ion by transient interaction with a pre-cooled ion. The
transient coupling is achieved through dynamical control of the ions'
equilibrium positions. To achieve short cooling times we make use of shortcuts
to adiabaticity by applying invariant-based engineering. We design these to
take account of imperfections such as stray fields, and trap frequency offsets.
For settings appropriate to a currently operational trap in our laboratory, we
find that robust performance could be achieved down to $6.3$ motional cycles,
comprising $14.2\ \mathrm{\mu s}$ for ions with a $0.44\ \mathrm{MHz}$ trap
frequency. This is considerably faster than can be achieved using laser cooling
in the weak coupling regime, which makes this an attractive scheme in the
context of quantum computing.
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