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Multidimensional Coherent Spectroscopy: Probing the Strain Tensor in Diamond and the Effects of Correlated Dephasing
Multidimensional Coherent Spectroscopy: Probing the Strain Tensor in Diamond and the Effec...
Multidimensional Coherent Spectroscopy: Probing the Strain Tensor in Diamond and the Effects of Correlated Dephasing

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211152056
ISBN  
9798382739083
DDC  
530
저자명  
Bates, Kelsey M.
서명/저자  
Multidimensional Coherent Spectroscopy: Probing the Strain Tensor in Diamond and the Effects of Correlated Dephasing
발행사항  
[Sl] : University of Michigan, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
129 p
주기사항  
Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
주기사항  
Advisor: Cundiff, Steven T.
학위논문주기  
Thesis (Ph.D.)--University of Michigan, 2024.
초록/해제  
요약This work covers two main results united by multidimensional coherent spectroscopy (MDCS): one experimental and one theoretical. MDCS is a nonlinear optical technique in which a sample is probed using a series of ultrashort pulses. Measurements are made while varying the relative time delays between the pulses, and the resulting spectra yield a much richer set of information compared to traditional linear spectroscopies.The experimental work concerns the negatively charged silicon-vacancy (SiV) center in diamond. We use two-pulse correlation (TPC) spectroscopy and rephasing MDCS to probe a diamond sample with a high density of implanted SiV centers. These spectra reveal a large number of spectral peaks, which can be grouped into two families of SiV centers using the MDCS spectra. By comparing spectra from two polarizations of the incident light, we associate the two families with two orientation groups within the diamond.We link the differences in the frequencies of the spectral peaks to strain intrinsic to our sample, and use the peak locations from both families to solve for the full strain tensor local to the laser spot. By measuring TPC spectra at multiple points on the sample, we track changes in the measured strain. We observe non-zero strain on the order or 1 x 10−5 at every measured location, and observe variation in both the normal and shear strain in the sample. We interpret the strain as likely to be due to the high implantation density of silicon in the diamond. These results could be useful when using SiV centers as a strain gauge.The theoretical work uses simulations to calculate spectra. The simulations developed here begin by recursively generating a list of Feynman diagrams for a given signal pathway and system. The contributions due to each Feynman diagram are calculated and combined to find the complete spectrum. The code is designed to be very flexible, and can be used to simulate arbitrary types of MDCS spectra and energy level diagrams.We then apply the simulations to investigate the effects of correlated dephasing due to scattering events in the Markovian limit on MDCS of interacting systems. We derive a mathematical expression to represent the dephasing rate of a coherence in terms of the dephasing rates of the coherences from the constituent energy transitions and the correlation matrix of these transitions. This expression is applied to simulate double-quantum and higher-order n-quantum spectra of multiple interacting systems. For double-quantum spectra, correlated dephasing results in a higher double-quantum dephasing rate, and anticorrelated dephasing results in a lower double-quantum dephasing rate. Similar results are found for the n-quantum dephasing rate. Generally, for certain configurations, the many-body dephasing rate can be arbitrarily low, and the n-quantum linewidth can be arbitrarily narrow, although this requires some form of anticorrelation. These results could be useful in creating quantum sensors with higher sensitivities, since one limit of the sensitivity is the decoherence time of the system.
일반주제명  
Condensed matter physics
일반주제명  
Physics
일반주제명  
Optics
일반주제명  
Quantum physics
키워드  
Multidimensional coherent spectroscopy
키워드  
Ultrafast optics
키워드  
Two-pulse correlation
키워드  
Silicon-vacancy
기타저자  
University of Michigan Physics
기본자료저록  
Dissertations Abstracts International. 85-12B.
전자적 위치 및 접속  
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MARC

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■00520250211152056
■006m          o    d                
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■020    ▼a9798382739083
■035    ▼a(MiAaPQ)AAI31348938
■035    ▼a(MiAaPQ)umichrackham005448
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a530
■1001  ▼aBates,  Kelsey  M.
■24510▼aMultidimensional  Coherent  Spectroscopy:  Probing  the  Strain  Tensor  in  Diamond  and  the  Effects  of  Correlated  Dephasing
■260    ▼a[Sl]▼bUniversity  of  Michigan▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a129  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-12,  Section:  B.
■500    ▼aAdvisor:  Cundiff,  Steven  T.
■5021  ▼aThesis  (Ph.D.)--University  of  Michigan,  2024.
■520    ▼aThis  work  covers  two  main  results  united  by  multidimensional  coherent  spectroscopy  (MDCS):  one  experimental  and  one  theoretical.  MDCS  is  a  nonlinear  optical  technique  in  which  a  sample  is  probed  using  a  series  of  ultrashort  pulses.  Measurements  are  made  while  varying  the  relative  time  delays  between  the  pulses,  and  the  resulting  spectra  yield  a  much  richer  set  of  information  compared  to  traditional  linear  spectroscopies.The  experimental  work  concerns  the  negatively  charged  silicon-vacancy  (SiV)  center  in  diamond.  We  use  two-pulse  correlation  (TPC)  spectroscopy  and  rephasing  MDCS  to  probe  a  diamond  sample  with  a  high  density  of  implanted  SiV  centers.  These  spectra  reveal  a  large  number  of  spectral  peaks,  which  can  be  grouped  into  two  families  of  SiV  centers  using  the  MDCS  spectra.  By  comparing  spectra  from  two  polarizations  of  the  incident  light,  we  associate  the  two  families  with  two  orientation  groups  within  the  diamond.We  link  the  differences  in  the  frequencies  of  the  spectral  peaks  to  strain  intrinsic  to  our  sample,  and  use  the  peak  locations  from  both  families  to  solve  for  the  full  strain  tensor  local  to  the  laser  spot.  By  measuring  TPC  spectra  at  multiple  points  on  the  sample,  we  track  changes  in  the  measured  strain.  We  observe  non-zero  strain  on  the  order  or  1  x  10−5  at  every  measured  location,  and  observe  variation  in  both  the  normal  and  shear  strain  in  the  sample.  We  interpret  the  strain  as  likely  to  be  due  to  the  high  implantation  density  of  silicon  in  the  diamond.  These  results  could  be  useful  when  using  SiV  centers  as  a  strain  gauge.The  theoretical  work  uses  simulations  to  calculate  spectra.  The  simulations  developed  here  begin  by  recursively  generating  a  list  of  Feynman  diagrams  for  a  given  signal  pathway  and  system.  The  contributions  due  to  each  Feynman  diagram  are  calculated  and  combined  to  find  the  complete  spectrum.  The  code  is  designed  to  be  very  flexible,  and  can  be  used  to  simulate  arbitrary  types  of  MDCS  spectra  and  energy  level  diagrams.We  then  apply  the  simulations  to  investigate  the  effects  of  correlated  dephasing  due  to  scattering  events  in  the  Markovian  limit  on  MDCS  of  interacting  systems.  We  derive  a  mathematical  expression  to  represent  the  dephasing  rate  of  a  coherence  in  terms  of  the  dephasing  rates  of  the  coherences  from  the  constituent  energy  transitions  and  the  correlation  matrix  of  these  transitions.  This  expression  is  applied  to  simulate  double-quantum  and  higher-order  n-quantum  spectra  of  multiple  interacting  systems.  For  double-quantum  spectra,  correlated  dephasing  results  in  a  higher  double-quantum  dephasing  rate,  and  anticorrelated  dephasing  results  in  a  lower  double-quantum  dephasing  rate.  Similar  results  are  found  for  the  n-quantum  dephasing  rate.  Generally,  for  certain  configurations,  the  many-body  dephasing  rate  can  be  arbitrarily  low,  and  the  n-quantum  linewidth  can  be  arbitrarily  narrow,  although  this  requires  some  form  of  anticorrelation.  These  results  could  be  useful  in  creating  quantum  sensors  with  higher  sensitivities,  since  one  limit  of  the  sensitivity  is  the  decoherence  time  of  the  system.
■590    ▼aSchool  code:  0127.
■650  4▼aCondensed  matter  physics
■650  4▼aPhysics
■650  4▼aOptics
■650  4▼aQuantum  physics
■653    ▼aMultidimensional  coherent  spectroscopy
■653    ▼aUltrafast  optics
■653    ▼aTwo-pulse  correlation
■653    ▼aSilicon-vacancy
■690    ▼a0605
■690    ▼a0752
■690    ▼a0611
■690    ▼a0599
■71020▼aUniversity  of  Michigan▼bPhysics.
■7730  ▼tDissertations  Abstracts  International▼g85-12B.
■790    ▼a0127
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162803▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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