Nasa pc build11/22/2023 ![]() For example, it can implement a version of Grover’s algorithm, which can search through a database more quickly than a classical algorithm. ![]() The machine just needs to be connected to an ordinary computer with a software package capable of controlling it.Īlthough it processes only 2 qubits, the SpinQ device is capable of a number of quintessential quantum calculations. The result is a hugely powerful, regular magnetic field.Īnd that’s it. So the team employs a technique called shimming that generates another magnetic field capable of cancelling out any irregularities in the stronger field. These can now produce fields of up to a Tesla in strength, tens of thousands of times stronger than the Earth’s field.įor quantum computing, the field must also be highly regular. These must be cooled to the temperature of liquid helium, a difficult task requiring expensive, bulky equipment.īut the SpinQ team use permanent magnets instead. Superconducting Magnetsīack then, this approach was expensive because magnetic fields strong enough to do the job could only be created by powerful superconducting magnets. Indeed, the first quantum computers built in the 1990s used exactly the same approach. The technique is well understood and has long been used to make medical images of the body. That requires a few drops of liquid, which sit in a small vial in the middle of the powerful magnetic field. To ensure that the radio signals from the hydrogen and phosphorus atoms are strong enough to pick up, a huge number of molecules must be used, about 10^15 of them. This takes the form of colorless liquid at room temperature.ĭimethylphosphite is ideal because the phosphorous and hydrogen atoms are bonded to each other and close enough to interact while also capable of being manipulated independently. ![]() The compound at the heart of the SpinQ machine is dimethylphosphite, a tetrahedral molecule consisting of one phosphorous atom, one hydrogen atom, an oxygen and two CH3O groups. In this way, it is possible to flip the spin of atoms-equivalent to changing a 0 into 1 – and make the spins of neighboring atoms interact, which can simulate mathematical operations, and finally to record the result. This works by trapping specially selected molecules in a powerful magnetic field and then zapping them with radio frequency pulses to manipulate the spins of the atoms they contain.Īfter each set of radio pulses, the atoms relax and emit their own radio frequency signals, which reveal their new state. The price of the machine is in stark contrast to commercial quantum computers, which can cost in the region of $10 million and process more than 50 qubits.īy contrast, the SpinQ machine is much less powerful, able to process just 2 qubits, and relies on an entirely different technology called nuclear magnetic resonance. ![]()
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