Ultracold molecules for quantum simulation: rotational coherences in CaF and RbCs
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Polar molecules offer a new platform for quantum simulation of systems with long-range interactions, based on the electrostatic interaction between their electric dipole moments. Here, we report the development of coherent quantum state control using microwave fields in 40Ca19F and 87Rb133Cs molecules, a crucial ingredient for many quantum simulation applications. We perform Ramsey interferometry measurements with fringe spacings of ~1 kHz and investigate the dephasing time of a superposition of N = 0 and N = 1 rotational states when the molecules are confined. For both molecules, we show that a judicious choice of molecular hyperfine states minimises the impact of spatially varying transition-frequency shifts across the trap. For magnetically trapped 40Ca19F we use a magnetically insensitive transition and observe a coherence time of 0.61(3) ms. For optically trapped 87Rb133Cs we exploit an avoided crossing in the AC Stark shifts and observe a maximum coherence time of 0.75(6) ms.
Date Issued
2019-01-01
Date Acceptance
2018-11-05
Citation
Quantum Science and Technology, 2019, 4 (1)
ISSN
2058-9565
Publisher
IOP Publishing
Journal / Book Title
Quantum Science and Technology
Volume
4
Issue
1
Copyright Statement
© 2018 IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (https://creativecommons.org/licenses/by/3.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Engineering and Physical Sciences Research Council
Engineering and Physical Sciences Research Council
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000452553200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
EP/H031103/1
RF040529
EP/I012044/1
EP/M027716/1
EP/M027716/1
EP/I012044/1
Subjects
Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
quantum simulation
ultracold molecules
Ramsey interferometry
coherence
CaF
RbCs
SINGLE ATOMS
RYDBERG BLOCKADE
MOTT INSULATOR
COLD MOLECULES
SPIN-ROTATION
GAS
DYNAMICS
SPECTROSCOPY
POPULATION
TRANSITION
Publication Status
Published
Article Number
ARTN 014010
Date Publish Online
2018-12-05