Quantum Information, the Ambiguity of the Past, and the Birth ... - PiTP

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So we are motivated to add a new level of privacy. • Quantum: Information like the path taken in an interferometer, that exists only temporarily, and afterward can best be thought of as never having existed. • Classical but Escaped: Information that has been amplified to the point of becoming classical, but has escaped from Earth in thermal radiation. Humans have no way of recovering it. • Classically Private: Information that has been amplified to the point of becoming classical, and still resides on earth in a few places, though it may be infeasible to recover with current technology. • Public and Permanent Information that is so widely distributed that it is infeasible to erase all the copies.
Mysteries of the Past: Still recorded on earth, though unknown to any human and inaccessible with current technology: • Locations of gold rings, dropped in an annual ceremony into the Venice Lagoon over a period of several centuries, to symbolize Venice’s marriage to the Sea. Maybe still recorded on earth, maybe escaped: • Lost classic writings of many cultures • Fates of mysteriously disappeared persons, such as • Physicist Ettore Majorana disappeared 1938 • Labor leader Jimmy Hoffa disappeared 1975 • Computer Scientist Jim Gray disappeared 2007 Escaped: • Unrecorded raindrops from past rain storms. • Pattern of rice grains in today’s lunch sushi.
Page 1 and 2: Quantum Information, the Ambiguity
Page 3 and 4: After the experiment is over, even
Page 5 and 6: (This typically happens when the en
Page 7 and 8: To the amazement of most of the res
Page 9 and 10: Nowadays, it is tempting to believe
Page 11 and 12: Even in today’s world, much macro
Page 13 and 14: But I think some information really
Page 18 and 19: How to obliterate earthly evidence
Page 20 and 21: But suppose we wanted to store not
Page 22 and 23: Can we arrange for escaped informat
Page 24 and 25: • Can we outrun the radiation? Fo
Page 26: Ontological Status of Escaped Infor
Page 29 and 30: • Is random input (eg radiation f
Page 31 and 32: Up to now, I have considered only g
Page 33 and 34: Looking inside a pottery kiln by it
Page 35 and 36: Most classical information, such as
Page 37 and 38: Enough about information & remember
Page 39 and 40: Self-organization, the spontaneous
Page 41 and 42: Wake behind Stepping Stone (Kamo Ri
Page 43 and 44: In the philosophy of science, the p
Page 45 and 46: A trivially orderly sequence like 1
Page 47 and 48: At equilibrium, complexity still pe
Page 49 and 50: Conversely, what else is required,
Page 51 and 52: Dissipation without Complexity 50 C
Page 53 and 54: Are some dissipative environments s
Page 55 and 56: Extra Slides
Page 57 and 58: The input/output graph of this or a
Page 59 and 60: Problem: scaling with number: we wo
Page 61 and 62: Two Upper Neighbors Past Future Two
Page 63: Information budget for random permu

Quantum Information, the Ambiguity of the Past, and the Birth ... - PiTP

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