量子コンピュータ時代に対応する情報セキュリティ - MOD · 2020. 6. 19. · 量子関連技術の中でも「量子コンピュータ」、「量子センサー」、「量子暗
量子通訊與量子自動控制 Quantum Communication / Quantum Control
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Transcript of 量子通訊與量子自動控制 Quantum Communication / Quantum Control
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Stochastic Resonance for Quantum Channels
Stochastic Resonance for Quantum Channels, Phys. Rev. E 59 2801-2803 (1999).
Noise Effects for the Depolarizing Channel, Phys. Lett. A 259 349-354 (1999).
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Synergy of Modern Sciences
StochasticResonance
InformationTheories
QuantumComputers
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Information Theory
Shannon’s theories
•網路是無線寬廣的 寬頻上網 最寬到底能多寬 ?
•WinZip 壓縮檔案能壓多小 ?
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What is Stochastic Resonance?
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Quantum Computers 1995 P.Shore
•科學月刊 27 卷 6 期•1998 年 李國鼎文教基金會通俗科學寫作獎•長榮月刊 2000 年 9 月轉載 •教育部高中生加油站 http://content.edu.tw 盜用
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Schrödinger’s Cat
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一石二鳥
•Is there stochastic resonance for quantum channels?
•How could we have larger capacity for a quantum channel?
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Channel
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Mutual Information in the classical Limit is
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Channel Capacity
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Call for Participation:
• Teleportation Channels by P.Shore
• New Definitions for Capacities
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Quantum Feedback Control without Measurement
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measurement
Traditional Method for
Feedback Control
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Non-Cloning Theorem
• Quantum States CANNOT be Cloned
Cloner:
V. Buzek and M. Hillery, Phys. Rev. A, 54, 1844 (1996).
N.J.Cerf, Phys. Rev. Lett., 84, 4497 (2000).
L.M.Duan and G. C. Guo, Phys. Rev. Lett., 80, 4999 (1998).
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The Method I Proposed for
Quantum Control
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Example:2-Level Atoms Sponteneous Decay
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