Ví dụ về việc sử dụng Qubit trong Tiếng anh và bản dịch của chúng sang Tiếng việt
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Measuring the state of the qubit stored in an ion is quite simple.
Cdot\right\rangle$(pronounced as ket) is adopted to indicate qubit states….
IBM does offer online access to a 20 qubit system for researchers to use.
Displaystyle|0\rangle|1\rangle} and apply a Hadamard transform to each qubit.
Maybe some unknown force would cause sequential qubit photons to affect one another.
This means that the existence of a photon at theother end of the wire tells what state the qubit is in.
The key advantage of Microsoft's topological qubit is that fewer physical qubits are needed to make one logical qubit, Svore said….
What the Toshiba and Cambridge researchers have done is to find a way of filtering out the noise andfocussing on the qubit photons.
So, in theory, Qubit is capable of representing quantum information up to infinity rather than just 0 or 1 like the classic Bit.
However, thanks to the peculiarity of quantum mechanical phenomena, the state of a qubit can also be both 0 and 1 at the same time.
Two qubits can have four values at the same time- 00, 01, 10 and 11- and each additional qubit doubles the number of possible states.
Two quantum bits can simultaneously take on four values- 00, 01, 10 and 11-and each additional qubit doubles the amount of possible states.
While each qubit is actually made up of a billion aluminum atoms, it acts like a single atom that can occupy two different energy states.
In the development of quantum computers,researchers have to deal with jumps of the qubit, which are manifestations of errors in calculations.
This qubit property arises as a direct consequence of its adherence to the laws of quantum mechanics which differ radically from the laws of classical physics.
For example, within six months, the IBM team was able to extend the coherence times for the 20 qubit processor to be twice that of the publicly available 5 and 16 qubit systems on the IBM Q experience.
Thus, if a computer has 2 qubits, at one point it will have 22= 4 states, 3 qubits will have 23= 8 states, N qubits will have 2N qubit states simultaneously.
In just a six-month period, for example, IBM was able to extend the coherence times(the amount of time available to perform quantum computations) for the 20 qubit processor to be twice that of the 5 and 16 qubit systems.
Quantum superposition is achieved by hitting the qubit with a pulse of energy and then stopping, so the electron is somewhere between spin-down and spin-up.
Now, however, Robert Schoelkopf and colleagues from Yale University have solved the problem by making the cavity itself part of a 2D wire andsetting inside a superconducting tunnel junction as the qubit instead of an atom.
In the hundreds billion qubit data holding a human's Fluctlight, it translates and reads the words we understand, and at the same time, it translates and writes the information into a form we can read too.
Hence, following Einstein, Podolsky, and Rosen in 1935 in their famous"EPR paper",there is something missing in the description of the qubit pair given above- namely this"agreement", called more formally a hidden variable.
The true difficulties lie with precision of more complex qubit gates and with protecting many wires from the environment- remember, if the environment‘observes' the quantum wires, they become classical again.
In recent years, companies such as IBM, Google, Microsoft, D-wave have all announced new steps for quantum computers,especially IBM has started bringing quantum 5 qubit computers to the“cloud.” cloud”so users around the world can get used to and test the power of computers.
Since at room temperatures any particle used as the qubit would be flipping wildly between spin-up and spin-down, or 1 and 0, temperatures of 0.0015 Kelvin(a shade above -273 degrees Celcius) are needed to fix it in either a spin-up or spin-down position.
In recent years, companies such as IBM, Google, Microsoft, D-wave have all announced new steps for quantum computers,especially IBM has started bringing quantum 5 qubit computers to the“cloud.” cloud”so users around the world can get used to and test the power of computers.
In quantum computers, quantum state measurements need to be made to determine qubit values at a time, which leads to the collapse of the overlapping state of qubits(decoherence), which causes The qubit's superposition takes place shortly before collapse and takes a long time to recover.
In one experiment, scientists used a single phosphorus atom carefully encapsulated within a silicon chip, and fitted next to a tiny transistor,while two years ago MIT experimented with a qubit that relied on shaving an electron off this atom and suspending it in free space using an electromagnetic field.
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One way to get a reliable single photon source is to place an atom-- the qubit-- inside a tiny cavity and excite it to a higher energy state so that it emits a photon containing the mapped qubit state out of the cavity's opening.