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Title: Entanglement-enhanced optical atomic clocks
Recent developments in atomic physics have enabled the experimental generation of many-body entangled states to boost the performance of quantum sensors beyond the Standard Quantum Limit (SQL). This limit is imposed by the inherent projection noise of a quantum measurement. In this Perspective article, we describe the commonly used experimental methods to create many-body entangled states to operate quantum sensors beyond the SQL. In particular, we focus on the potential of applying quantum entanglement to state-of-the-art optical atomic clocks. In addition, we present recently developed time-reversal protocols that make use of complex states with high quantum Fisher information without requiring sub-SQL measurement resolution. We discuss the prospects for reaching near-Heisenberg limited quantum metrology based on such protocols.  more » « less
Award ID(s):
1806765
NSF-PAR ID:
10385146
Author(s) / Creator(s):
; ;
Date Published:
Journal Name:
Applied Physics Letters
Volume:
121
Issue:
21
ISSN:
0003-6951
Page Range / eLocation ID:
210502
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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