Entropy squeezing for qubit – field system under decoherence effect

Summary The excavations revealed a stone house and showed that it was oval, 13 m × 10 m, with an interior about 7 m in diameter. In the first occupation phase the entrance was on the SE side. During the second phase this entrance was replaced with one to the NE and the interior was partitioned. The roof was supported on wooden posts. After the building was abandoned it was covered with peat-ash which was subsequently ploughed. There were numerous finds of steatite-tempered pottery and stone implements, which dated the site to late Bronze/early Iron Age. The second settlement, Site B, lay by the shore of the voe and consisted of two possible stone-built houses and a field system. Two trenches were dug across the structures and the results are reported in Appendix I. Although damaged in recent years it was in no further danger.

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The Explanatory Fish-Scale Register(魚鱗圖說) and the Nine-square field System(井田制) of Dasan(茶山) Jeong Yak-yong(丁若鏞)

Journal of Koreanology ◽

10.15299/jk.2015.8.56.3 ◽

2015 ◽

Vol 56 ◽

pp. 3

Author(s):

Yoon-Oh Choi

Keyword(s):

Fish Scale ◽

Field System

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The Internet is a Semicommons

10.31228/osf.io/znhdx ◽

2018 ◽

Cited By ~ 1

Author(s):

James Grimmelmann

Keyword(s):

Open Field ◽

Online Communities ◽

Strategic Behavior ◽

Private Property ◽

The Internet ◽

Field System ◽

Technical Features ◽

Dynamic Interplay ◽

Enormous Success

78 Fordham Law Review 2799 (2010)The Internet is a semicommons. Private property in servers and network links coexists with a shared communications platform. This distinctive combination both explains the Internet's enormous success and illustrates some of its recurring problems.Building on Henry Smith's theory of the semicommons in the medieval open-field system, this essay explains how the dynamic interplay between private and common uses on the Internet enables it to facilitate worldwide sharing and collaboration without collapsing under the strain of misuse. It shows that key technical features of the Internet, such as its layering of protocols and the Web's division into distinct "sites," respond to the characteristic threats of strategic behavior in a semicommons. An extended case study of the Usenet distributed messaging system shows that not all semicommons on the Internet succeed; the continued success of the Internet depends on our ability to create strong online communities that can manage and defend the infrastructure on which they rely. Private and common both have essential roles to play in that task, a lesson recognized in David Post's and Jonathan Zittrain's recent books on the Internet.

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Radiocarbon Dates from an Upland Site of the Kona Field System, Hawai'I Island, Hawaii

Radiocarbon ◽

10.1017/s0033822200020233 ◽

1986 ◽

Vol 28 (3) ◽

pp. 1227-1227

Author(s):

C T Kawachi

Keyword(s):

West Coast ◽

The West ◽

Radiocarbon Dates ◽

Field System ◽

Agricultural Site

The following samples were excavated in July 1985 in an upland (elev 609.6m) prehistoric agricultural site in the Kona Field System on the west coast of Hawai'i Island.

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Robustness of Measurement–Induced Correlations Under Decoherence Effect

International Journal of Theoretical Physics ◽

10.1007/s10773-021-04830-z ◽

2021 ◽

Author(s):

S. Bhuvaneswari ◽

R. Muthuganesan ◽

R. Radha

Keyword(s):

Decoherence Effect

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Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states

Scientific Reports ◽

10.1038/s41598-021-89809-w ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Jino Heo ◽

Seong-Gon Choi

Keyword(s):

Quantum Information ◽

Quantum Information Processing ◽

Photon Number ◽

Optical Devices ◽

Quantum Bus ◽

Reliable Procedure ◽

Optical Gates ◽

Photon Loss ◽

Decoherence Effect ◽

Logical Qubit

AbstractWe propose a photonic procedure using cross-Kerr nonlinearities (XKNLs) to encode single logical qubit information onto four-photon decoherence-free states. In quantum information processing, a decoherence-free subspace can secure quantum information against collective decoherence. Therefore, we design a procedure employing nonlinear optical gates, which are composed of XKNLs, quantum bus beams, and photon-number-resolving measurements with linear optical devices, to conserve quantum information by encoding quantum information onto four-photon decoherence-free states (single logical qubit information). Based on our analysis in quantifying the affection (photon loss and dephasing) of the decoherence effect, we demonstrate the experimental condition to acquire the reliable procedure of single logical qubit information having the robustness against the decoherence effect.

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