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Randomness and Quantumness in Space-Bounded Computation- [electronic resource]
Randomness and Quantumness in Space-Bounded Computation - [electronic resource]
Randomness and Quantumness in Space-Bounded Computation- [electronic resource]

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자료유형  
 학위논문파일 국외
최종처리일시  
20240214101305
ISBN  
9798380413787
DDC  
004
저자명  
Zhan, Wei.
서명/저자  
Randomness and Quantumness in Space-Bounded Computation - [electronic resource]
발행사항  
[S.l.]: : Princeton University., 2023
발행사항  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
형태사항  
1 online resource(222 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 85-04, Section: B.
주기사항  
Advisor: Raz, Ran.
학위논문주기  
Thesis (Ph.D.)--Princeton University, 2023.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약In the field of computational complexity theory, we study the power and limits of different computational resources and the interplay between them. The constraints on space complexity provide a natural and interesting setting, that is often more tractable than the time-restricted counterparts. In this dissertation, we specifically study how randomness and quantumness interact with space complexity.Our results consist of two parts. In the first part, we present our algorithmic results. We show that randomness used for BPL algorithms can be reduced to logarithmic with the access to untrusted random bits. Consequentially, every BPL algorithm can be certifiably derandomized using presumably hard functions. For quantum computing, we show how to eliminate intermediate measurement in logspace quantum circuits, and simulate general quantum algorithms in BQL with only unitaries.In the second part, we present our lower bound results. For decision problems, we propose the coupon-collector model where one receives random coordinates of the input, and prove a quadratic time-space tradeoff lower bound in the model. For computing multi-output functions, we prove the first polynomial separation between randomized and deterministic oblivious computation for total functions. And for learning, we prove an exponential time lower bound against classical-quantum hybrid learners with sub-quadratic classical memory and sublinear quantum memory.
일반주제명  
Computer science.
일반주제명  
Systems science.
키워드  
Quantum computing
키워드  
Randomness
키워드  
Space-bounded computation
기타저자  
Princeton University Computer Science
기본자료저록  
Dissertations Abstracts International. 85-04B.
기본자료저록  
Dissertation Abstract International
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

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■020    ▼a9798380413787
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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a004
■1001  ▼aZhan,  Wei.
■24510▼aRandomness  and  Quantumness  in  Space-Bounded  Computation▼h[electronic  resource]
■260    ▼a[S.l.]:▼bPrinceton  University.  ▼c2023
■260  1▼aAnn  Arbor  :▼bProQuest  Dissertations  &  Theses,  ▼c2023
■300    ▼a1  online  resource(222  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-04,  Section:  B.
■500    ▼aAdvisor:  Raz,  Ran.
■5021  ▼aThesis  (Ph.D.)--Princeton  University,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aIn  the  field  of  computational  complexity  theory,  we  study  the  power  and  limits  of  different  computational  resources  and  the  interplay  between  them.  The  constraints  on  space  complexity  provide  a  natural  and  interesting  setting,  that  is  often  more  tractable  than  the  time-restricted  counterparts.  In  this  dissertation,  we  specifically  study  how  randomness  and  quantumness  interact  with  space  complexity.Our  results  consist  of  two  parts.  In  the  first  part,  we  present  our  algorithmic  results.  We  show  that  randomness  used  for  BPL  algorithms  can  be  reduced  to  logarithmic  with  the  access  to  untrusted  random  bits.  Consequentially,  every  BPL  algorithm  can  be  certifiably  derandomized  using  presumably  hard  functions.  For  quantum  computing,  we  show  how  to  eliminate  intermediate  measurement  in  logspace  quantum  circuits,  and  simulate  general  quantum  algorithms  in  BQL  with  only  unitaries.In  the  second  part,  we  present  our  lower  bound  results.  For  decision  problems,  we  propose  the  coupon-collector  model  where  one  receives  random  coordinates  of  the  input,  and  prove  a  quadratic  time-space  tradeoff  lower  bound  in  the  model.  For  computing  multi-output  functions,  we  prove  the  first  polynomial  separation  between  randomized  and  deterministic  oblivious  computation  for  total  functions.  And  for  learning,  we  prove  an  exponential  time  lower  bound  against  classical-quantum  hybrid  learners  with  sub-quadratic  classical  memory  and  sublinear  quantum  memory.
■590    ▼aSchool  code:  0181.
■650  4▼aComputer  science.
■650  4▼aSystems  science.
■653    ▼aQuantum  computing
■653    ▼aRandomness
■653    ▼aSpace-bounded  computation
■690    ▼a0984
■690    ▼a0790
■71020▼aPrinceton  University▼bComputer  Science.
■7730  ▼tDissertations  Abstracts  International▼g85-04B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0181
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16933565▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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