A photo from open sources
The new method allows you to switch from probabilistic transmission quantum bits at a distance to the deterministic – without interference and needs for further measurement.
Installation, with which for the first time it was possible to achieve full deterministic teleportation of quantum bits (here and below DigInfoTV illustrations).
Akira Furusawa’s group from Tokyo University (Japan) was able to realize the full quantum teleportation of photonic qubits using hybrid technology.
This does not surprise you, because the first quantum teleportation is quantum state transmission at a distance at which the first particles, this state is destroyed, and the second occurs a condition identical to the first one was realized back in 1997 year?
Yes it is. Just use such a quantum teleportation for real information processing using quantum bits (qubits) was decidedly impossible. In the traditional quantum teleportation measurement is carried out after transfer qubits, and transmission efficiency was low. Best case scenario less than 90% of all qubits sent, and the transmitting one does not understands what kind of qubits in question, and therefore cannot duplicate. The moral is simple: when used in real communication loss of more than 10% of information makes the whole system impractical.
“In 1998, we used a slightly atypical technique to unconventional full teleportation. But then the transferred state it wasn’t a quantum beat, ”Akira Furusawa emphasizes. – now we applied our experimental technique of 1998 sample, to transmit quantum bits. ”
Hybrid teleportation system combines transmission technology light waves in a wide range and a method of reducing the range frequencies of photon quantum bits. Thanks to this, incorporate quantum bits into light waves. In addition, failure from principally probabilistic bell measurements allowed to make quantum teleportation itself not probabilistic, but rigidly deterministic – for the first time in the world.
“I suppose we can say with certainty that only now quantum computers are closer to reality – immensely optimistically states Mr. Furusawa. – Teleportation of this kind can be represented as a quantum gate [transistor], where the drain and source are identical. So if we slightly improve the process, the source and stock to program their status, we get programmable quantum shutter. Combining many such shutters, we come out on a real quantum computer. ”
How a new type of quantum teleportation will affect our daily routine? At least it will provide a reliable connection, based on quantum cryptography, which maybe put the end of the situation when the United States is listening to UN videoconferences, Presidents of Mexico, Bolivia, then everywhere (other countries with decent intelligence services, too, of course, do not lag behind). But us and you most likely the use of such systems for safe making banking operations and online payments.
The hybrid method only needs one classic communication channel – no matter wired or not, to reliably transmit qubits.
A photo from open sources
The hybrid method only needs one classic communication channel – no matter wired or not, to reliably transmit qubits.
And absolutely everything will become almost fabulous if Mr. Furusawa still right, and we, using teleportation, will be able build full-fledged quantum computers.
Recall: in May 2013, comparative tests are very modest D-Wave One quantum computer (Vesuvius processor, only 512 qubit) and a four-processor computer (2.4 GHz, Intel, 16 GB RAM) showed that a number of tasks a quantum machine performs in 0.5 s, and the usual – in 30 minutes, i.e. 3,600 times slower. Finally, quantum computers can do what present, in principle, is impossible or requires time comparable to the duration of the existence of the universe. Yes, speech first It is about modeling new substances with unique properties, from drugs and structural materials to high temperature superconductors. So win?
The study report is published in the journal Nature.
Prepared based on DigInfoTV.
Teleportation
