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Engineered Collisions, Molecular Qubits, and Laser Cooling of Asymmetric Top Molecules.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Engineered Collisions, Molecular Qubits, and Laser Cooling of Asymmetric Top Molecules./
Author:	Burchesky, Sean.
Description:	1 online resource (298 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
Contained By:	Dissertations Abstracts International84-12B.
Subject:	Physics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30492233click for full text (PQDT)
ISBN:	9798379605520

Engineered Collisions, Molecular Qubits, and Laser Cooling of Asymmetric Top Molecules.
Burchesky, Sean.

Engineered Collisions, Molecular Qubits, and Laser Cooling of Asymmetric Top Molecules. - 1 online resource (298 pages)

Source: Dissertations Abstracts International, Volume: 84-12, Section: B.

Thesis (Ph.D.)--Harvard University, 2023.

Includes bibliographical references

In this dissertation, I present studies of molecules for uses in quantum science ranging from quantum computing and ultracold collisions to controlling organic-inspired molecular species. Starting with a diatomic molecule, calcium monofluoride, we developed an optical tweezer platform for use in quantum computing and demonstrated rotational coherence times significantly longer than measured dipole-enabled gate times. Using the Tweezer platform, we studied ultracold collisions of exactly two molecules and exerted full quantum control over the internal structure of the molecules. The collisions resulted in a rapid loss from the tweezers, leading us to develop a microwave shield to prevent these lossy collisions. The shielding scheme enhanced the rate of elastic collisions enabling the demonstration of forced evaporative cooling.To explore the possible use of larger molecules for quantum science, we studied the rotational structure of an asymmetric top and aromatic molecule, calcium monophenoxide, with the intent of identifying a path toward laser cooling and trapping. We cycled several photons, but theory predicted many more. After eliminating several decay paths, the key loss remained unknown. Applying the same methods to CaNH2, a smaller asymmetric top molecule with similar spatial symmetry, we performed laser cooling. Using CaNH2, we demonstrated photon cycling, and then observed Sisyphus cooling and heating features for the first time using an asymmetric top molecule. This work lays the foundation for future laser-cooling of organic-inspired molecules in an optical tweezer array for applications ranging from quantum computing to quantum chemistry, and precision measurement.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798379605520Subjects--Topical Terms:

516296
Physics.
Subjects--Index Terms:

Asymmetric top moleculesIndex Terms--Genre/Form:

542853
Electronic books.

Engineered Collisions, Molecular Qubits, and Laser Cooling of Asymmetric Top Molecules.
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100 1 $a Burchesky, Sean. $3 3703805
245 1 0 $a Engineered Collisions, Molecular Qubits, and Laser Cooling of Asymmetric Top Molecules.
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300 $a 1 online resource (298 pages)
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500 $a Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
500 $a Advisor: Doyle, John.
502 $a Thesis (Ph.D.)--Harvard University, 2023.
504 $a Includes bibliographical references
520 $a In this dissertation, I present studies of molecules for uses in quantum science ranging from quantum computing and ultracold collisions to controlling organic-inspired molecular species. Starting with a diatomic molecule, calcium monofluoride, we developed an optical tweezer platform for use in quantum computing and demonstrated rotational coherence times significantly longer than measured dipole-enabled gate times. Using the Tweezer platform, we studied ultracold collisions of exactly two molecules and exerted full quantum control over the internal structure of the molecules. The collisions resulted in a rapid loss from the tweezers, leading us to develop a microwave shield to prevent these lossy collisions. The shielding scheme enhanced the rate of elastic collisions enabling the demonstration of forced evaporative cooling.To explore the possible use of larger molecules for quantum science, we studied the rotational structure of an asymmetric top and aromatic molecule, calcium monophenoxide, with the intent of identifying a path toward laser cooling and trapping. We cycled several photons, but theory predicted many more. After eliminating several decay paths, the key loss remained unknown. Applying the same methods to CaNH2, a smaller asymmetric top molecule with similar spatial symmetry, we performed laser cooling. Using CaNH2, we demonstrated photon cycling, and then observed Sisyphus cooling and heating features for the first time using an asymmetric top molecule. This work lays the foundation for future laser-cooling of organic-inspired molecules in an optical tweezer array for applications ranging from quantum computing to quantum chemistry, and precision measurement.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Physics. $3 516296
650 4 $a Quantum physics. $3 726746
650 4 $a Atomic physics. $3 3173870
653 $a Asymmetric top molecules
653 $a Laser cooling
653 $a Microwave shielding
653 $a Molecular collisions
653 $a Quantum computing
653 $a Ultracold molecules
655 7 $a Electronic books. $2 lcsh $3 542853
690 $a 0605
690 $a 0599
690 $a 0748
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a Harvard University. $b Physics. $3 2094825
773 0 $t Dissertations Abstracts International $g 84-12B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30492233 $z click for full text (PQDT)