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Needless an Unecessary

Returning to the things you love, actions of past memories make the new movements familiar once more. Reading and writing those are the things of the moment, a moment called back to light with the twisting turns of the revolving wheels of a rocking train. The Locomotive is loud, diesel fueled and distrustful. Is it irony that right after carefully cleaning the linens bad things happen to them nearly immediately.

She just wants to dream. That is a simple observation to make when one is awake. Long into the hours of the night. Or not really that long into the night. It’s still awfully early by my own past standards. In times past drawing (writing) was something often dreamed of. My mind desires comfort, do not worry it tells itself. Something might need to be learned. That is what we (You and I) are doing, while we are off exploring this landscape (knowledge scape?) which we have let another describe.

Sometimes in the present the words of those from the past echo through my thoughts. The memories are more frequent from different times to different times. Sometimes I recall how once, in a different time, the things which occupied my thoughts, now seem like strange, faint and foreign memories. It seemed important to spend some moments writing. It’s been so long since wandering was permitted. I do not want to lose my sense of adventure just because the world seems to have dominated identity.

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The internet command line

The internet is a massive force in the world. It is a place we all travel to and speak about that seems to exist in another dimension. On the internet nearly anyone could in theory travel anywhere.

“I wish there was time travel!” Memes, websites and small businesses are all things which exist on the web. So many companies exist solely due to our internet communications. Whoever envisioned the tools that lie on our keyboard today. So easily within reach.

The command line is where this world came from and still, it is where the infrastructure of our modern world rests. The simple command line requires masterful skill by the author. Who knows what commands the underlying CPU might recognize? Random sequences of strings mean things to it.

The modern web is a marvel to behold, bright colors and images, animations and interactivity, but at the same time the core is still a simple line of text which answers a fundamental question. The URL tells where you are and it is your internet command line. It is the only place to write down where you want to go and amazingly enough it is one of the most mysterious places for a traveller. Where will it take you? How often does that URL change? Why do we love walled gardens? What happens when there is randomness?

As the internet grows and changes the list of dominant url’s, at least for my own personal travels begins to become fixed. The same websites and the same paths. My internet command line is still mysterious. I wish for more knowledge about the places to be accessed and the wonders to see but the internet will never become a real city. Wandering it’s hidden architectures will remain a pleasure for only the programs who build the search indices and humans will continue to access the mysteries of that command line through search queries.

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Article of Interest

Silicon waveguide that converts polarization mode of light could speed up photonic circuits operation

Silicon is the dominant material for the fabrication of integrated circuits and is also becoming a popular material for making photonics circuits — miniaturized circuits that use light instead of electronic signals for processing information. One of the challenges in the field, however, has been silicon’s intrinsic sensitivity to the polarization of light, which can limit the rate of information transmission. Jing Zhang, Tsung-Yang Liow and co-workers at the A*STAR Institute of Microelectronics have now developed a novel solution to this problem.

***Note to Self***

transverse electric and transverse magnetic polarization

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Trying to make a quantum eraser at the LTC

Today’s visit to the LTC began with reading various web pages about Quantum Eraser experiments. To help understand the quantum eraser experiment I watched a few videos about the famous “Young’s Double Slit” experiment. The videos demonstrated how an observer influences the pattern created by photons (or electrons) sent through two slits. When the slit choice of the photons is unobserved they create a double slit interference pattern, but when observed the photons create two bars. The quantum eraser experiment relies on the same idea of observing which way photons in two interfering laser beams are traveling (by measuring the polarization of the two laser beams).

I decided to try out a simple experiment in a Scientific America article about a DIY quantum eraser experiment, and thought I would improve it by using a fine strand to create the diffraction pattern instead of the suggested piece of wire. This turned out to be unwise, because despite creating a very nice diffraction pattern the initial spacing was so fine I was unable to complete the second part of the experiment, which is to polarize the two halves of the “split beam” in orthogonal directions. I left this project alone, but I think I could get it to work next time by using a lens to increase the size of my laser dot, a wire to split the beam and creating a spliced polarizer, ½ horizontal and ½ vertical. If this is placed directly after the wire the interference pattern should disappear and then reappear if I place another polarizer into the beam after the initial polarization.

I continued to try out this idea using the large interferometer, which has an interference pattern. I placed a horizontal polarizer in one beam and a vertical polarizer in the other. The interference pattern disappeared, because the two beams where no longer interacting with each other, but a reduced intensity light still shone through. Rotating a polarizer in this light just reduced the overall intensity. I do not recall if it completely darkened the light at any point and I forgot to record it. I’ll have to check again.

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NOON Chip

Scientists say it’s high ‘NOON’ for microwave photons

An important milestone toward the realization of a large-scale quantum computer, and further demonstration of a new level of the quantum control of light, were accomplished by a team of scientists at UC Santa Barbara and in China and Japan.

More about the group that is working on this:
http://www.physics.ucsb.edu/~martinisgroup/index.shtml

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Scientists successfully manipulate qubits with electrical fields

http://www.gizmag.com/manipulating-qubits-with-electrical-fields/17380/

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Quantum computers could be easier to build than previously thought

http://www.gizmag.com/quantum-computers-easier-to-build/16933/

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Two-photon walk a giant stride for quantum computing

http://www.gizmag.com/two-photon-walk-quantum-computing/16394/

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Atom images raise quantum computer hopes – physics-math – 18 August 2010 – New Scientist

Atom images raise quantum computer hopes – physics-math – 18 August 2010 – New Scientist.

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Triple-slit experiment confirms reality is quantum – physics-math – 22 July 2010 – New Scientist

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via Triple-slit experiment confirms reality is quantum – physics-math – 22 July 2010 – New Scientist.

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