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Probing and Controlling Ultracold Polar Molecules in a Quantum Gas Microscope
Probing and Controlling Ultracold Polar Molecules in a Quantum Gas Microscope
Probing and Controlling Ultracold Polar Molecules in a Quantum Gas Microscope

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202103518
ISBN  
9798280751026
DDC  
530
저자명  
Rosenberg, Jason Scott.
서명/저자  
Probing and Controlling Ultracold Polar Molecules in a Quantum Gas Microscope
발행사항  
[Sl] : Princeton University, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
239 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
주기사항  
Advisor: Bakr, Waseem S.
학위논문주기  
Thesis (Ph.D.)--Princeton University, 2025.
초록/해제  
요약Ultracold polar molecules are of great interest for the quantum simulation of many-body physics due to their strong dipolar interactions, large set of internal states, and favorable coherence to interaction time ratios. They have been proposed, for example, as a platform to realize quantum spin liquids and to explore the phase diagrams of quantum magnets. However, the complexity of molecules that lends them many appealing features for studying many-body physics also makes them challenging to probe and control. In this thesis, we present our work advancing the capabilities of the molecular quantum simulation platform by developing single lattice site detection of polar molecules and working to combine that technology with high phase-space density molecular gases. We first discuss the creation of a quantum gas microscope for sodium-rubidium (NaRb) molecules, enabling for the first time the measurement of site-resolved correlations between individual molecules in an optical lattice. As an initial demonstration, we observe Hanbury Brown-Twiss correlations between non-interacting molecules arising from their quantum statistics. The microscope allows for the measurement of a high visibility interference pattern despite a correlation peak width of less than one lattice site. In a second experiment, we transfer the molecules to their absolute ground state to probe correlation dynamics in lattice spin models. We show the flexibility of our platform by tuning both the spatial and spin anisotropy of the Hamiltonian, the latter representing the first application of Floquet engineering to polar molecules. In the second part of the thesis, we describe current efforts toward achieving a high phase-space density gas of polar NaRb molecules in our microscope apparatus. This has necessitated the implementation of collisional shielding mechanisms to address universal loss at short intermolecular distances as well as the exploration of protocols to increase our molecule number. Together with rapid advances by other groups in the field, this work holds promise for creating close to unity filling optical lattices of polar molecules in the near future.
일반주제명  
Physics
일반주제명  
Quantum physics
일반주제명  
Atomic physics
일반주제명  
Molecular physics
키워드  
Molecules
키워드  
Quantum gas microscope
키워드  
Quantum simulation
키워드  
Ultracold gases
키워드  
Sodium-rubidium
기타저자  
Princeton University Physics
기본자료저록  
Dissertations Abstracts International. 86-12B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■020    ▼a9798280751026
■035    ▼a(MiAaPQ)AAI32038454
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a530
■1001  ▼aRosenberg,  Jason  Scott.▼0(orcid)0000-0003-3410-5196
■24510▼aProbing  and  Controlling  Ultracold  Polar  Molecules  in  a  Quantum  Gas  Microscope
■260    ▼a[Sl]▼bPrinceton  University▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a239  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-12,  Section:  B.
■500    ▼aAdvisor:  Bakr,  Waseem  S.
■5021  ▼aThesis  (Ph.D.)--Princeton  University,  2025.
■520    ▼aUltracold  polar  molecules  are  of  great  interest  for  the  quantum  simulation  of  many-body  physics  due  to  their  strong  dipolar  interactions,  large  set  of  internal  states,  and  favorable  coherence  to  interaction  time  ratios.  They  have  been  proposed,  for  example,  as  a  platform  to  realize  quantum  spin  liquids  and  to  explore  the  phase  diagrams  of  quantum  magnets.  However,  the  complexity  of  molecules  that  lends  them  many  appealing  features  for  studying  many-body  physics  also  makes  them  challenging  to  probe  and  control.  In  this  thesis,  we  present  our  work  advancing  the  capabilities  of  the  molecular  quantum  simulation  platform  by  developing  single  lattice  site  detection  of  polar  molecules  and  working  to  combine  that  technology  with  high  phase-space  density  molecular  gases.  We  first  discuss  the  creation  of  a  quantum  gas  microscope  for  sodium-rubidium  (NaRb)  molecules,  enabling  for  the  first  time  the  measurement  of  site-resolved  correlations  between  individual  molecules  in  an  optical  lattice.  As  an  initial  demonstration,  we  observe  Hanbury  Brown-Twiss  correlations  between  non-interacting  molecules  arising  from  their  quantum  statistics.  The  microscope  allows  for  the  measurement  of  a  high  visibility  interference  pattern  despite  a  correlation  peak  width  of  less  than  one  lattice  site.  In  a  second  experiment,  we  transfer  the  molecules  to  their  absolute  ground  state  to  probe  correlation  dynamics  in  lattice  spin  models.  We  show  the  flexibility  of  our  platform  by  tuning  both  the  spatial  and  spin  anisotropy  of  the  Hamiltonian,  the  latter  representing  the  first  application  of  Floquet  engineering  to  polar  molecules.  In  the  second  part  of  the  thesis,  we  describe  current  efforts  toward  achieving  a  high  phase-space  density  gas  of  polar  NaRb  molecules  in  our  microscope  apparatus.  This  has  necessitated  the  implementation  of  collisional  shielding  mechanisms  to  address  universal  loss  at  short  intermolecular  distances  as  well  as  the  exploration  of  protocols  to  increase  our  molecule  number.  Together  with  rapid  advances  by  other  groups  in  the  field,  this  work  holds  promise  for  creating  close  to  unity  filling  optical  lattices  of  polar  molecules  in  the  near  future.
■590    ▼aSchool  code:  0181.
■650  4▼aPhysics
■650  4▼aQuantum  physics
■650  4▼aAtomic  physics
■650  4▼aMolecular  physics
■653    ▼aMolecules
■653    ▼aQuantum  gas  microscope
■653    ▼aQuantum  simulation
■653    ▼aUltracold  gases
■653    ▼aSodium-rubidium
■690    ▼a0605
■690    ▼a0599
■690    ▼a0748
■690    ▼a0609
■71020▼aPrinceton  University▼bPhysics.
■7730  ▼tDissertations  Abstracts  International▼g86-12B.
■790    ▼a0181
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357479▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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