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Eats to the heart's content, should do a matter.
For the last link of cislunar control duty chain, a matter of wicker basket waits for him to complete.
However when he is preparing sets out before the desk, outside the office actually suddenly resounded the knock.
Thinks appointment in yesterday's telephone, land Zhou guessed correctly probably is, threw into the paper goods the pack box conveniently, gripped the plastic bag again puts tightly in one side, clears throat to say.
„Come.”
The gate of office shoved open, sees only Chief Li that familiar, and did not have the accidental/surprised face to appear in the entrance slightly, saw to put in table nearby pack box, he who prepared to greet with a smile, on the face showed the surprised expression.
„...... Do you eat this thing at noon?”
land Zhou looked at his one eyes strangely.
„Does two meat element, have the issue?”
„, Does not have......”
„Without said that the matter, around 3 : 00 pm I must return to that side the higher research institute to meet, about the lunar orbit construction committee that side work,” looked at time on the watch, land Zhou looked that continues to say to Chief Li, „what matter that you yesterday in the telephone with are I did say?”
Chief Li has not spoken, looked at Wang Peng one eyes.
Wang Peng nods, takes up the pack box to withdraw from the office knowingly, and took the gate conveniently.
In the office was only left over two people.
Saw not to have others, Chief Li then to say.
„Matter about that quantum encryption algorithm.”
Hears is this matter, land Zhou the eyebrow was interested immediately lifts under asked.
„Easy-to-use?”
„Easy-to-use! Simply was too easy-to-use.” Chief Li patted starting, haha said with a smile, „you do not know, the deputies of our magnificence Keyuan information engineering research institute after seeing, has almost not knocked the chin surprisedly on the ground......”
Saw that this fellow is describing delightedly, land Zhouzong has a not good premonition.
Each time this old man and he does everything to please, is not the plan introduces the object to him, has the matter to trouble him.
„......, since easy-to-use, you also do ask me to do?”
Chief Li smiles to say.
„A while ago you did not say, after your carbon base analysis situs quantum processor chip comes out, how long quantum computer couldn't want to break through 1000 Qubit?”
land Zhouxiang a while, selected under.
„I good to want truly to say.”
„Is this matter!” Patted under the palm, Chief Li continues saying that „couple days ago in the section met, specifically discussed this issue, but does to us really to lack this expert in aspect, discussed the half of the day cannot discuss a reason why......”
„Stops, does not need to give me to explain the cause and effect,” land boat lifts the hand, stopped the words of Chief Li, sighed saying that „...... you told me also to have any troublesome matter to be good directly.”
„Pouring is not the trouble matter, mainly under wants to consult your opinion,” Chief Li smiles embarrassed, the inquiry said, „...... this 2000 Qubit's computer, when can come out probably?”
Hears Chief Li these words, land Zhou understands immediately he is thinking anything, did for quite a while in the worry technology time-limited issue.
However is also unavoidable, generally will be individual will have this worry.
If from 80 to 500 bottlenecks is so easy to break through, was very difficult saying that from 500 to 1000, and how long from 1000 to 2000 technological barriers can insist again.
Replacement encryption algorithm matter, does not change penguin password small matter, this involves the reform of entire communication domain, the recessive social cost that needs to pay, is hard to be pure with money weighs.
If possible, the relevant departments naturally are the hope replace an encryption algorithm, can manage slightly for a long time.
Don't when the time comes 35 years on a renewal encryption algorithm, even the financial industry, communications industry and Internet industry magnificence country's again how tenacious, cannot withstand tosses about......
„Your worry is actually unreasonable,” the index finger knocked knocking on the table gently, land Zhou pondered over a moment later, said, „this gadget was very difficult to say. I can only tell you 1000 Qubit's bottleneck to break through in a short time, but after 2000 Qubit...... at least must wait till 1000 Qubit to break through, I can give you an accurate estimate.”
Chief Li is: „It is estimated that isn't one good?”
„It is not the issue that the estimate is good, but simply does not have the significance,” land boat sighed, „you, if only wants to attempt a psychology to comfort, might as well look for telling fortunes asking, was 55 opens from the angle of probability in any case. And......”
, land Zhou continued to say.
„Quantum encryption algorithm forever for a while, what n Qubit corresponds is a 2 ^ n condition, rather than 2 is multiplied by n. Theoretically if only the difficulty of linear pile high proposition, one day our encryption methods, the meeting is unable to catch up with the speed of our information technology development.”
In the office fell into silent.
Chews landing boat these words repeatedly, Chief Li pondered long time, crossed the earnest opens the mouth to ask some little time.
„You felt, what to do should we?”
„Only can solve this problem fundamentally, after” land boat thought a while said, „in other words, ceases the possibility of leaking from the communication method!”
„Is your meaning...... the quantum communication?”
land Zhou commended nods.
„.”
The expression of Chief Li is somewhat dignified.
„......, but I heard, the quantum communication technology isn't simple? Our country in this is also walks front the comparison, the achievement also had much, but I had not noticed this technology moved toward the mature symptom.”
„Could not see that this symptom is very normal,” land boat said that „, because present this domain obtains the breakthrough main centralism to realize the photon entanglement and enhancement signal strength these two aspects, but wants to realize the quantum communication truly, the key lies on the quantum repeater.”
The segmentation words, the quantum repeater can also subdivide for „quantum memory” again downward and „quantum state reads and the optimization in efficiency and storage time of reading out” these two propositions.
But these two big technical problems, in the dlcz plan mentioned, using quantum memory and single photon channel unifies to suppress to weaken, realizes long distance quantum communication.
However, because quantum memory basically no significant progress, causing the quantum communication only to be able the distance in hundred kilometers to realize, moreover to transmitting the environment the request is quite harsh. But this also lost the value of practical application, even was once suspected is possible to realize.
„Quantum repeater?”
„Un,” looks at Chief Li looking pensive, land Zhoudian, „this has anything to progress, but has not progressed completely. This point, the entire world is the same......”
The quantum communication can keep secret absolutely, then because of wave function special characteristics, once gives the information the photon to be intercepted, any observation behavior will cause the avalanche of entangled state.
Said popular, between A and B telephone, if there is third party C to stand in the middle intercepts. What method that no matter C adopts, pastes the ear with the wiretap device on the wall, so long as were heard a character by C, A and B can know that immediately the communication was intercepted, and entire information will also lose the significance.
Including the asymmetric cryptography algorithm, is the traditional communication methods that all encryption algorithms aim. But in the face of the quantum communication technology, the encryption is unnecessary.
This is also so-called „unconditionally security”!
Spent for probably five minutes, land Zhou the technical problem of quantum communication and it compared to the advantage of traditional communication method, to Chief Li simply speaking.
Although is some platitudes things, before Chief Li, listens to many people and he has spoken similar thing, but these mouth said time after all from Academician land, the instantaneous significance was different.
After listening to land Zhou the explanation, his heart fiery, pursues immediately hastily asks.
„This ‚unconditionally security’ the quantum communication, is doing very difficult?”
Land boat look earnest place under.
„To be honest, is not only very difficult! But quite difficult!”
„Spoke the part that you could not understand regardless these me, you only needed to know, this gadget basically is limit quantum communication technology commercializing the bottleneck of most core on the line.”
In the office was again peaceful.
This peaceful time is a little long.
The land boat took up the drinking glass on table to drink one, sleek/moist the mulberry, prepared to comfort this old friend two, and told him not to need extremely to worry. That wrap/sets encryption algorithm can definitely first use, when 2000 Qubit's computer comes out, said that did not permit the research of quantum repeater also to have the new progress.
The birth of any new technology, requires the time to precipitate, that set of quantum encryption algorithm that although he develops in he opinion is not what specially wise thing, but will have no issue on some time.
However when he is just about to open the mouth, Chief Li actually forestalled freely one step according , the whole face opened the mouth to ask anxiously.
„...... That, that quantum repeater, can you handle?”
land Zhou: „........................”
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