서브메뉴
검색
Quantum Zeno Effect on the Decay of a Single Microwave Photon
Quantum Zeno Effect on the Decay of a Single Microwave Photon
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103015
- ISBN
- 9798286443611
- DDC
- 530.1
- 저자명
- Joshi, Vidul.
- 서명/저자
- Quantum Zeno Effect on the Decay of a Single Microwave Photon
- 발행사항
- [Sl] : Yale University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 124 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
- 주기사항
- Advisor: Devoret, Michel H.
- 학위논문주기
- Thesis (Ph.D.)--Yale University, 2025.
- 초록/해제
- 요약Quantum mechanics and classical physics differ fundamentally when it comes to measurement. In classical physics, measurement is nonintrusive, which means the act of measurement does not disturb the state of the system. In quantum mechanics, however, measurement is often invasive, meaning the act of measurement has a back action on the system's state. This difference is illustrated to its full extent by the quantum Zeno effect, where the evolution of a quantum system is inhibited when it is repeatedly measured. The system is repeatedly projected into an eigenstate of the measurement operator, preventing its natural evolution.In theory, the quantum Zeno effect should slow down both the unitary evolution of quantum systems as well as the non unitary evolution where a quantum system is interacting with an environment. In practice, however, the quantum Zeno effect is rarely observed in the latter case, where the decay of a quantum losing energy to the environment is slowed down by frequent measurements. This is because more often than not, the rate of measurements is too slow compared to the time at which of environmental correlatiions die. This raises the question: under what conditions can the quantum Zeno effect actually slow down the decay of an open quantum system? In this thesis, we demonstrate how the quantum Zeno effect slows down the decay of a microwave photon in a superconducting resonator. The experiment is performed in a circuit quantum electrodynamics (cQED) setup that enables precise control over quantum systems with several interacting degrees of freedom.A photon is loaded into a superconducting resonator, where it decays through a controlled loss channel, allowing us to tune the bandwidth of the environment interacting with the photon. To measure the decay of the photon and observe its slowing down, we use a transmon dispersively coupled to the resonator.The quantum Zeno effect appears when the measurement rate exceeds the memory time of the environment. Our results show that this effect arises from the competition between two dissipative processes: photon decay and measurement-induced back action. By tuning both the measurement rate, and the line-width of the environment, we can make the measurement back action win this competition and successfully observe the Zeno effect.At the highest possible measurement rate, the decay rate of the photon is slowed down by a factor of 7.The experiment requires us to tune several processes simultaneously, which occur on time scales spanning three orders of magnitude.The results of this thesis how circuit QED can be used to investigate fundamental quantum phenomena, providing insight into the complex interplay between measurement and dissipation in quantum systems.
- 일반주제명
- Quantum physics
- 일반주제명
- Condensed matter physics
- 일반주제명
- Electrical engineering
- 키워드
- Circuit QED
- 기타저자
- Yale University Applied Physics
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017356675
■00520260202103015
■006m o d
■007cr#unu||||||||
■020 ▼a9798286443611
■035 ▼a(MiAaPQ)AAI31843363
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530.1
■1001 ▼aJoshi, Vidul.
■24510▼aQuantum Zeno Effect on the Decay of a Single Microwave Photon
■260 ▼a[Sl]▼bYale University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a124 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-12, Section: B.
■500 ▼aAdvisor: Devoret, Michel H.
■5021 ▼aThesis (Ph.D.)--Yale University, 2025.
■520 ▼aQuantum mechanics and classical physics differ fundamentally when it comes to measurement. In classical physics, measurement is nonintrusive, which means the act of measurement does not disturb the state of the system. In quantum mechanics, however, measurement is often invasive, meaning the act of measurement has a back action on the system's state. This difference is illustrated to its full extent by the quantum Zeno effect, where the evolution of a quantum system is inhibited when it is repeatedly measured. The system is repeatedly projected into an eigenstate of the measurement operator, preventing its natural evolution.In theory, the quantum Zeno effect should slow down both the unitary evolution of quantum systems as well as the non unitary evolution where a quantum system is interacting with an environment. In practice, however, the quantum Zeno effect is rarely observed in the latter case, where the decay of a quantum losing energy to the environment is slowed down by frequent measurements. This is because more often than not, the rate of measurements is too slow compared to the time at which of environmental correlatiions die. This raises the question: under what conditions can the quantum Zeno effect actually slow down the decay of an open quantum system? In this thesis, we demonstrate how the quantum Zeno effect slows down the decay of a microwave photon in a superconducting resonator. The experiment is performed in a circuit quantum electrodynamics (cQED) setup that enables precise control over quantum systems with several interacting degrees of freedom.A photon is loaded into a superconducting resonator, where it decays through a controlled loss channel, allowing us to tune the bandwidth of the environment interacting with the photon. To measure the decay of the photon and observe its slowing down, we use a transmon dispersively coupled to the resonator.The quantum Zeno effect appears when the measurement rate exceeds the memory time of the environment. Our results show that this effect arises from the competition between two dissipative processes: photon decay and measurement-induced back action. By tuning both the measurement rate, and the line-width of the environment, we can make the measurement back action win this competition and successfully observe the Zeno effect.At the highest possible measurement rate, the decay rate of the photon is slowed down by a factor of 7.The experiment requires us to tune several processes simultaneously, which occur on time scales spanning three orders of magnitude.The results of this thesis how circuit QED can be used to investigate fundamental quantum phenomena, providing insight into the complex interplay between measurement and dissipation in quantum systems.
■590 ▼aSchool code: 0265.
■650 4▼aQuantum physics
■650 4▼aCondensed matter physics
■650 4▼aElectrical engineering
■653 ▼aCircuit QED
■653 ▼aQuantum Zeno effect
■653 ▼aSuperconducting qubit
■690 ▼a0599
■690 ▼a0544
■690 ▼a0611
■71020▼aYale University▼bApplied Physics.
■7730 ▼tDissertations Abstracts International▼g86-12B.
■790 ▼a0265
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356675▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
Preview
Export
ChatGPT Discussion
AI Recommended Related Books
ค้นหาข้อมูลรายละเอียด
- จองห้องพัก
- ไม่อยู่
- โฟลเดอร์ของฉัน
- ขอดูแรก
- Non-Book Loan Application
- Nighttime Book Loan Application
Available after logging in.


