Simply choosing an encryption method that doesn't rely on the difficulty of large integer factorization or one of the other in the "quantum age" no-longer-difficult problems will save traditional encryption.
I don't believe such a method is known to exist (and it's not for lack of looking). Please correct me if I'm wrong!
Just to clarify, by all-optical switching, I meant anything where the single photon is not measured & resent (i.e., the way a classical repeater works). This sort of switching is possible, but not typically done.
No, it can be done on a switched network, as long as the switching is all-optical (or you have a quantum repeater). Fortunately, this sort of technology is MUCH simpler than a full-blown quantum computer, so wide-scale quantum cryptography will be viable (though not necessarily in place) long before quantum computing is viable.
What enables me to earn wealth is the natural ability of a human being, in the presence of a society that allows individuals to fulfill that potential. Government is not the creator of this society (it is, in fact, created by the people), only the appointed protector of it. Government of course has legitimate functions, but taking wealth from the people who created it and handing it out to others is not one of them.
tax breaks for people who don't need them, don't deserve them, and in many cases don't want them
When someone earns, or really creates, some amount of wealth, that person is the sole entity that deserves that wealth. Whether or not they need it is irrelevant. Taxes are only morally acceptable when they go to fund a legitimate role of government.
If anyone doesn't want a tax cut, they are free to send more money to the US Treasury department.
The result is a large number of foreign assembly plants here in the US. Those workers have health plans, they have not collected 99 weeks of unemployment, had their houses foreclosed, or joined the ranks of 40 million American citizens collecting food stamps. Most of them did not incur 10+ years of education debt to achieve all of the above.
No, they just sucked their companies dry by holding a gun to their heads during union contract negotiations, then had taxpayers like me write them a $50 billion check so they could go bankrupt two weeks later. Oh, and then stole the company's assets from the rightful bond holders and gave it to themselves (the union). All the while forcing me to pay unnecessarily high prices for cars. You picked a great example there...
All intellectual property at the moment of creation belongs The People . This is to ensure that we always possess a rich culture of art, literature, and technology. After all, everything is created by building on the works of others.
This statement says the same thing with and without the word "intellectual". This is proposing that all created property (e.g., a house that I built with my bare hands) belongs to "The People".
It does not matter what lens was used to collimate the beam in the first place. The focal length of the lens system of the eye is such that a beam with a flat wavefront (i.e., collimated) will be focused at the back of the eye.
If the beam is defocused, it will spread out too rapidly to make efficient collection possible. If the beam is collimated, your eye will focus it (if its in the ~400-1200nm range). I agree that mid IR is very usable.
The difference is the size of the spot on the back of your eye. Sunlight is spatially incoherent, and forms an image on the back of your eye, spreading out the light over that image. A laser is spatially coherent, so all of the light will get focused down to a very small spot, so a much higher irradiance. A (visible) 1-Watt laser will *immediately* burn a blind spot on your eye. Mid IR light is "eye safe" though, so you could withstand up to ~1 Watt (very ballpark, didn't look it up just now).
Yes, but they aren't only exchanging radiation with each other. The Earth and Sun are constantly radiating to outer space, and would eventually assume the same temperature as the CMBR. If you set up a system that was only exchanging radiation with the Sun, and otherwise completely isolated, it would assume the temperature of the Sun. And there is no way you could possibly get hotter than that (via thermal coupling to the Sun).
I don't think I agree with that. Let's say we have one system that is held at a fixed temperature, and another system that is isolated, other than a radiative connection to the first. Looking only at this second system, the only interaction it has is through this radiation field. It eventually assumes the same temperature as the first system. However, it's only "seeing" the radiation field. Therefore it's the radiation field that has that temperature.
You are also wrong! Blackbody radiation, for example, certainly has a temperature associated with it. I'm actually not sure how to think of the temperature of a laser (and I have put some thought towards it, and am studying in quantum optics in grad school). Even a weak laser can heat up a physical object, so it is quite hot. It comes from a lasing material that is at a negative temperature, so it could also have negative temperature. But as another poster pointed out, it has very low entropy. This leads me to think that a laser has negative zero temperature.
A quantum computer able to do useful classical computing (i.e., factoring large numbers) would have to have a large number of bits (512-1024, very far away by any metric). A quantum computer able to do simulations of quantum systems beyond what current supercomputers could do would have to have maybe 10 bits (maybe not too far away).
They aren't (mainly) fighting for resources. They're fighting for prestige/career advancement (one of the advantages of which is is easier access to funding). Scientists aren't these abstract, disconnected, altruistic beings you imagine. They seek personal advancement like everyone else, and there's nothing wrong with that when it's done in the proper manner.
There is an important distinction, if you consider the beam going in your eye. The laser beam is spatially coherent, while sunlight is not. That means that when you look at the sun, not all of the light focuses to the same spot (i.e., an image of the sun is projected on your eye). If you were to look at this laser beam, the light would get focused down to a very small spot, only a few photoreceptors wide. This adds another (pulled out of thin air) ~1000x brighter.
Slashdot Mirror
Simply choosing an encryption method that doesn't rely on the difficulty of large integer factorization or one of the other in the "quantum age" no-longer-difficult problems will save traditional encryption.
I don't believe such a method is known to exist (and it's not for lack of looking). Please correct me if I'm wrong!
Just to clarify, by all-optical switching, I meant anything where the single photon is not measured & resent (i.e., the way a classical repeater works). This sort of switching is possible, but not typically done.
No, it can be done on a switched network, as long as the switching is all-optical (or you have a quantum repeater). Fortunately, this sort of technology is MUCH simpler than a full-blown quantum computer, so wide-scale quantum cryptography will be viable (though not necessarily in place) long before quantum computing is viable.
What enables me to earn wealth is the natural ability of a human being, in the presence of a society that allows individuals to fulfill that potential. Government is not the creator of this society (it is, in fact, created by the people), only the appointed protector of it. Government of course has legitimate functions, but taking wealth from the people who created it and handing it out to others is not one of them.
tax breaks for people who don't need them, don't deserve them, and in many cases don't want them
When someone earns, or really creates, some amount of wealth, that person is the sole entity that deserves that wealth. Whether or not they need it is irrelevant. Taxes are only morally acceptable when they go to fund a legitimate role of government.
If anyone doesn't want a tax cut, they are free to send more money to the US Treasury department.
Arxiv link
The result is a large number of foreign assembly plants here in the US. Those workers have health plans, they have not collected 99 weeks of unemployment, had their houses foreclosed, or joined the ranks of 40 million American citizens collecting food stamps. Most of them did not incur 10+ years of education debt to achieve all of the above.
No, they just sucked their companies dry by holding a gun to their heads during union contract negotiations, then had taxpayers like me write them a $50 billion check so they could go bankrupt two weeks later. Oh, and then stole the company's assets from the rightful bond holders and gave it to themselves (the union). All the while forcing me to pay unnecessarily high prices for cars. You picked a great example there...
All intellectual property at the moment of creation belongs The People . This is to ensure that we always possess a rich culture of art, literature, and technology. After all, everything is created by building on the works of others.
This statement says the same thing with and without the word "intellectual". This is proposing that all created property (e.g., a house that I built with my bare hands) belongs to "The People".
This is Communism.
What did you think the Obama administration would do? Hire someone with even a tiny bit of private sector experience? Ha!
It does not matter what lens was used to collimate the beam in the first place. The focal length of the lens system of the eye is such that a beam with a flat wavefront (i.e., collimated) will be focused at the back of the eye.
If the beam is defocused, it will spread out too rapidly to make efficient collection possible. If the beam is collimated, your eye will focus it (if its in the ~400-1200nm range). I agree that mid IR is very usable.
The difference is the size of the spot on the back of your eye. Sunlight is spatially incoherent, and forms an image on the back of your eye, spreading out the light over that image. A laser is spatially coherent, so all of the light will get focused down to a very small spot, so a much higher irradiance. A (visible) 1-Watt laser will *immediately* burn a blind spot on your eye. Mid IR light is "eye safe" though, so you could withstand up to ~1 Watt (very ballpark, didn't look it up just now).
If you don't think you have more to fear from Muslims than from Catholics in terms of physical harm, you might want to reconsider the facts.
You've still done something 99.9999999% of the other humans never did.
One of the few cases where a ridiculous number of 9s is actually accurate :)
Yes, but they aren't only exchanging radiation with each other. The Earth and Sun are constantly radiating to outer space, and would eventually assume the same temperature as the CMBR. If you set up a system that was only exchanging radiation with the Sun, and otherwise completely isolated, it would assume the temperature of the Sun. And there is no way you could possibly get hotter than that (via thermal coupling to the Sun).
I don't think I agree with that. Let's say we have one system that is held at a fixed temperature, and another system that is isolated, other than a radiative connection to the first. Looking only at this second system, the only interaction it has is through this radiation field. It eventually assumes the same temperature as the first system. However, it's only "seeing" the radiation field. Therefore it's the radiation field that has that temperature.
You are also wrong! Blackbody radiation, for example, certainly has a temperature associated with it. I'm actually not sure how to think of the temperature of a laser (and I have put some thought towards it, and am studying in quantum optics in grad school). Even a weak laser can heat up a physical object, so it is quite hot. It comes from a lasing material that is at a negative temperature, so it could also have negative temperature. But as another poster pointed out, it has very low entropy. This leads me to think that a laser has negative zero temperature.
Actually even non-Christians can baptize, IIRC.
A quantum computer able to do useful classical computing (i.e., factoring large numbers) would have to have a large number of bits (512-1024, very far away by any metric). A quantum computer able to do simulations of quantum systems beyond what current supercomputers could do would have to have maybe 10 bits (maybe not too far away).
Yes, freedom is bad!
Uh there's been a whole lot more CO2 in the air (and oceans) than there is now in the past. Amazingly, life survived.
We kind of already are doing that. Look up atom interferometers.
They aren't (mainly) fighting for resources. They're fighting for prestige/career advancement (one of the advantages of which is is easier access to funding). Scientists aren't these abstract, disconnected, altruistic beings you imagine. They seek personal advancement like everyone else, and there's nothing wrong with that when it's done in the proper manner.
There is an important distinction, if you consider the beam going in your eye. The laser beam is spatially coherent, while sunlight is not. That means that when you look at the sun, not all of the light focuses to the same spot (i.e., an image of the sun is projected on your eye). If you were to look at this laser beam, the light would get focused down to a very small spot, only a few photoreceptors wide. This adds another (pulled out of thin air) ~1000x brighter.
There has never been an invasion of a nuclear state.
Yom Kippur War