Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An atomic array optical clock with single-atom readout   Currently, the most accurate and stable clocks use optical interrogation of
either a single ion or an ensemble of neutral atoms confined in an optical
lattice. Here, we demonstrate a new optical clock system based on an array of
individually trapped neutral atoms with single-atom readout, merging many of
the benefits of ion and lattice clocks as well as creating a bridge to recently
developed techniques in quantum simulation and computing with neutral atoms. We
evaluate single-site resolved frequency shifts and short-term stability via
self-comparison. Atom-by-atom feedback control enables direct experimental
estimation of laser noise contributions. Results agree well with an ab initio
Monte Carlo simulation that incorporates finite temperature, projective
read-out, laser noise, and feedback dynamics. Our approach, based on a tweezer
array, also suppresses interaction shifts while retaining a short dead time,
all in a comparatively simple experimental setup suited for transportable
operation. These results establish the foundations for a third optical clock
platform and provide a novel starting point for entanglement-enhanced
metrology, quantum clock networks, and applications in quantum computing and
communication with individual neutral atoms that require optical clock state
control.

29
The categories of this paper are: funct-an
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn