12/8 Quantum Walk: Entanglement between coin and position spaces

/在： /通過：

時間：12月8日(四) 13：20 ~ 14：50

題目：Quantum Walk: Entanglement between coin and position spaces

講者：張慶瑞 主任暨講座教授

服務單位：中原大學量子資訊中心

對象：本所博士生及碩士生、或其他有興趣之師生

地點：本校科學三館1樓 SC157  (本次演講與電物系共同上課，講員於次軒廳演講，透過 google meet於SC157轉播)

Abstract: Quantum entanglement is that when a particle in a system is measured, not only the measured particle, but all the particles of the system, will immediately collapse to the classical result. Quantum entanglement brings bright prospects for the development of new technologies and will create the future quantum earth. Quantum walks are also the result of the entanglement of coins and position spaces, exhibiting very different characteristics than classical random walks. Quantum walks can provide exponential speedups compared to classical algorithms in some applications due to iterative shift and coin operators. Here, we mainly discuss two very different applications: fundamental physics and big data analytics. Majorana 1+1 spacetime dynamics and options pricing models with quantum walks show promise for quantum computing.

References:

Wei-Ting Wang, Xiao-Gang He, Hsien-Chung Kao, Ching-Ray Chang , https://arxiv.org/abs/2210.00306 .

12/1 Connection between Probability theory and Physics

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時間：12月1日(四) 13：20 ~ 14：50

題目：Connection between Probability theory and Physics

講者：千野由喜 助理教授

服務單位：國立陽明交通大學 應用數學系

對象：本所博士生及碩士生、或其他有興趣之師生

地點：本校科學三館1樓 SC157

備註：GoogleMeet連結直播 https://meet.google.com/ndj-aqqz-xuo 
摘要：
We consider how the probability theory can be applied to physics.
In this talk, we treat random walk as an example and see the relation
to heat equation, if time permits, we will also consider the relation
between random walk and electric networks.

11/24 Development of Quantum Processor with Fluxonium Superconducting Qubits

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時間：11月24日(四) 13：20 ~ 14：50

題目：Development of Quantum Processor with Fluxonium Superconducting Qubits

講者：林晏詳 助理教授

服務單位：國立清華大學 物理學系

對象：本所博士生及碩士生、或其他有興趣之師生

地點：本校科學三館1樓 SC157

備註：GoogleMeet連結直播 https://meet.google.com/ndj-aqqz-xuo 
摘要：
In a universal quantum processor, quantum states of quantum bits can be operated
by well-defined quantum logic gates.
Superconducting circuits is one of the promising candidates of hardware platform
for quantum processors. Fluxonium superconducting qubits have long coherence time,
large anharmonicity, and rich energy levels. In this talk, I will introduce
the basic concept of fluxonium superconducting qubits. We will further discuss
about single-qubit gates, two-qubit gates in fluxonium qubit systems.

11/17 氣候緊急年代的挑戰與契機

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時間：11月17日(四) 13：20 ~ 14：50

題目：氣候緊急年代的挑戰與契機  Challenge and Opportunity in Climate Emergency Era

講者：許晃雄 特聘研究員兼專題中心執行長

服務單位：中央研究院 環境變遷研究中心

對象：本所博士生及碩士生、或其他有興趣之師生

地點：本校科學三館地下1樓 次軒廳

備註：GoogleMeet連結直播  https://meet.google.com/owv-hinu-okx 

11/10 Is it possible to see the Planck scale?

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時間：11月10日(四) 13：20 ~ 14：50

題目：Is it possible to see the Planck scale?

講者：川合光 特聘講座教授

服務單位：國立臺灣大學 物理學系

對象：本所博士生及碩士生、或其他有興趣之師生

地點：本校科學三館1樓 SC157

備註：GoogleMeet連結直播 https://meet.google.com/ndj-aqqz-xuo 
摘要：
The fundamental interaction between elementary particles consists
of four forces: the electromagnetic force, the strong force, the
weak force, and gravity. At distances reachable by current
accelerators, gravity is extremely smaller than the other three
forces. However, at a hypothetical short distance, called the
Planck scale, all forces are equal in magnitude. In other words,
something with the size of the Planck scale seems to underlie
everything, and a strong candidate for this is string theory.
In this talk, I will discuss the possibility of actually seeing
physical phenomena at the Planck scale, including string theory.
Specifically, we plan to discuss (1) the emergence and expansion
of the universe based on the matrix model, (2) the naturalness
problem and the behavior of the Standard Model at the Planck scale,
and (3) the relationship between black hole evaporation and the
Planck scale.

11/1 Spatial-Temporal dynamics in Solid State Lasers 固態雷射時空動力學之研究

/在： /通過：

時間：11月1日(二) 12：20 ~ 13：20

題目：Spatial-Temporal dynamics in Solid State Lasers  固態雷射時空動力學之研究

講者：梁興弛 教授

服務單位：國立臺灣海洋大學 光電與材料科技學系

地點：本校科學三館1樓 SC160

10/27 Decoherence limit of quantum systems obeying generalized uncertainty principle: new paradigm for Tsallis thermostatistics

/在： /通過：

時間：10月27日(四) 13：45 ~ 15：10

題目：Decoherence limit of quantum systems obeying generalized uncertainty principle: new paradigm for Tsallis thermostatistics

講者：Doc. Dr Petr Jizba

服務單位：Department of Physics, Czech Technical University in Prague

對象：本所博士生及碩士生、或其他有興趣之師生(本次演講與電物系共同上課)

地點：線上演講 https://meet.google.com/ndj-aqqz-xuo   修課學生請至科學三館1樓 SC157教室聽講

備註：GoogleMeet連結直播https://meet.google.com/ndj-aqqz-xuo 
Decoherence limit of quantum systems obeying generalized uncertainty principle: new paradigm for Tsallis thermostatistics
P.Jizba
 
The generalized uncertainty principle (GUP) is a phenomenological model whose purpose is to account for a minimal length scale (eg, Planck scale or characteristic inverse-mass scale in effective quantum description) in quantum systems. In my talk I will discuss possible observational effects of GUP systems in their decoherence domain. I first derive coherent states associated to GUP and unveil that in the momentum representation they coincide with Tsallis’ probability amplitudes, whose non-extensivity parameter q monotonically increases with the GUP deformation parameter β . Secondly, for β < 0 (ie, q < 1      ), I show that, due to Bekner-Babenko inequality, the GUP is fully equivalent to information-theoretic uncertainty relations based on Tsallis-entropy-power. Finally, I invoke the Maximal Entropy principle known from estimation theory to reveal connection between the quasi -classical (decoherence) limit of GUP-related quantum theory and non-extensive thermostatistics of Tsallis. This might provide an exciting paradigm in a range of fields from quantum theory to analog gravity. For instance, in some quantum gravity theories, such as conformal gravity, the aforementioned quasi-classical regime has relevant observational consequences. I will discuss some of the implications.
 
P. Jizba and J. Korbel, Phys. Rev. Lett. 122 , 120601 (2019).    
P. Jizba, Y. Ma, A. Hayes, and JA Dunningham Phys. Rev. E 93 , 060104(R) (2016)   
P.Jizba,  G. Lambiase, G. Luciano and L. Petruziello, Phys. Rev. D 105, L121501 (2022)
EP Verlinde, JHEP 04 , 029 (2011) 
PD Mannheim and JG O’Brien, Phys. Rev. Lett. 106 , 121101 (2011)  

10/20 Efficient information usage by cells – and cell biologists

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時間：10月20日(四) 13：20 ~ 14：50

題目：Efficient information usage by cells – and cell biologists

講者：神野圭太 助研究員

服務單位：中央研究院 分子生物研究所

對象：本所博士生及碩士生、或其他有興趣之師生

地點：本校科學三館1樓 SC157  (本次演講與電物系共同上課，講員於次軒廳演講，透過 google meet於SC157轉播)

備註：GoogleMeet連結直播 https://meet.google.com/nan-fqxi-cqc

Abstract: Organisms acquire and use sensory information to guide their behaviors. Likewise, scientists acquire and use the information contained in experimental data to better understand systems of interest. In both cases, the amounts of information available are usually limited, so using it efficiently is critical. In this seminar, I will discuss two aspects of efficient information usage. First, I explore information usage by cells, describing how we have discovered that motile Escherichia coli cells (arguably the simplest model of biological behavior) acquire very little information but use it highly efficiently. Second, I examine information usage by scientists, elaborating on how faced with noisy fluorescence data from single E. coli cells, we developed a method to extract relevant signals from raw data with theoretically maximal efficiency. Finally, I examine similarities between these two processes.

 

References:

  1. Kamino, K., Keegstra, J. M., Long, J., Emonet, T., & Shimizu, T. S. (2020). Adaptive tuning of cell sensory diversity without changes in gene expression. Science Advances, 6(46), eabc1087.
  2. Mattingly*, H. H., Kamino*, K., Machta, B. B., & Emonet, T. (2021). Escherichia coli chemotaxis is information limited. Nature Physics, 17(12), 1426-1431. (*Equal contribution)
  3. Kamino*, K., Kadakia, N., Aoki, K., Shimizu, T. S., & Emonet*, T. (2022). Optimal inference of molecular interaction dynamics in FRET microscopy. In revision in PNAS (*Corresponding authors)

10/6 Plasmon trapping-driven chiral crystallization

/在： /通過：

時間：10月6日(四) 13：20 ~ 14：50

題目：Plasmon trapping-driven chiral crystallization

講者：杉山輝樹 教授

服務單位：國立陽明交通大學 應用化學系

對象：本所博士生及碩士生、或其他有興趣之師生

地點：本校科學三館1樓 SC157

備註：GoogleMeet連結直播 https://meet.google.com/nan-fqxi-cqc 提供給不便到場之師生聽講

9/15 Temporal and spatial fractional frequency locking in solid state lasers: Devil’s staircase

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時間：9月15日(四) 13：20 ~ 14：30

題目：固態雷射系統中時間與空間的魔梯現象Temporal and spatial fractional frequency locking in solid state lasers: Devil’s staircase

講者：梁興弛 教授

服務單位：國立臺灣海洋大學 光電與材料科技學系

對象：本所博士生及碩士生、或其他有興趣之師生

地點：本校科學三館1樓 SC157

備註：GoogleMeet連結直播 https://meet.google.com/nan-fqxi-cqc 提供給不便到場之師生聽講