Quantum computing improves with the Fibonacci sequence

Quantum computing improves with the Fibonacci sequence

Image for article titled They manage to increase the computing power of a quantum computer using the Fibonacci sequence

A team of physicists assures What have you achieved? Create a new phase of matter using laser pulses that read the Fibonacci sequence A quantum computer in Colorado. the new The phase of matter depends on a quirk of the Fibonacci sequence A longer quantum state.

LNormal matter can be in a superheated solid, liquid, gaseous, or plasmic phase (or state). Likewise, heQuantum materials also have phases. Phase refers to the structure of matter at the atomic level, in other words, the arrangement of its atoms or electrons.

A few years ago, physicists A Quantum supersolid. ELast year, a team confirmed the existence of quantum spin fluids in a simulator. What did he do? is a recent team find out Another new phase.

Quantum bits, or qubits, are like ordinary bits of the computer In the sense that their values ​​can be either 0 or 1. However, unlike computer bits, qubits Can also be 0 1 simultaneously. That A state of ambiguity Quantum computers allow Consider several possible solutions to a problem quickly than a normal computer.

Someday, IAs quantum computers Must be able to solve problems Computers Classic They can’t. Inside quantum computers, LA qubit is just a few atoms. AndIn recent times, for example, The researchers used 10 ytterbium ions, which were controlled Electric fields and manipulation Laser pulses. When the states of multiple qubits can be described relative to each other, the qubits are considered entangled.

Quantum entanglement a Subtle agreement Between multiple qubits in a system, that too The moment any of those bits have a value, the contract is terminated some At that point, the system loses coherence and the quantum function breaks down. In consonance, uno big ones Challenges is the precision of quantum computing Retain the quantum state of qubits. There may be slight fluctuations in temperature, vibrations or electromagnetic fields supersensible qubits Sync will be lost and your calculations will crash. CQuits last longer quantum, so you can do more to achieve A crucial step in this technology is that the quantum states of computers last as long as possible.

In recent research, a laser frequently pulsed 10 ytterbium qubits into a quantum state, i.e. entangled., for 1.5 seconds. But the researchers followed the lasers as they pulsed They discovered the pattern of the Fibonacci sequence The qubits at the edge of the system remained in the quantum state for about 5.5 seconds. LThe qubits could remain in a quantum state More time, but the team finished the experiment in 5.5 seconds. Their research was published this summer in Nature.

The reason for this change Laser pulses is the Fibonacci sequence into two frequencies that never overlap. That makes the pulses a quasicrystal: a pattern with regularity, but no periodicity. “The main result The aim was to show the difference between these two different ways of designing Quantum states, How one was better than the other at protecting him from mistakes,” he explains. Study co-author Justin Bonnett, a quantum engineer at Quantum, The company used the computer in this experiment.

The Fibonacci sequence is where each number is the sum of the previous two numbers (ie 1, 1, 2, 3, 5, 8, 13, etc.). Its history goes way back doing Over 2,000 years, Related to the so-called golden ratio. Now the unique sequence may have quantum implications. “If you design it changes With the right laser pulses, your quantum system can have symmetries that come from translation.ation of time,” said Philip Dumitrescu, the paper’s lead author and a quantum physicist who worked at the Flatiron Institute.

A translational symmetry Temporal means that an experiment will give the same result regardless of whether it is today, tomorrow, or 100 years from now. “NBy using quasi-periodic sequences based on the Fibonacci pattern, we realized that we could Make the system behave as if there are two different directions of time,” Dumitrescu added.

Firing the qubits with laser pulses in a periodic pattern (simple ABAB) did not prolong the quantum state of the system. But by pulsing the laser in the Fibonacci sequence (A-AB-ABA-ABAAB, etc.), the researchers gave the qubits a non-repeating, or periodic, pattern. And the ideais similar to Quasicrystals from the Trinity Nuclear Test Site, but instead of being a three-dimensional quasicrystal, physicists created a quasicrystal over time. In both cases, symmetries that exist in higher dimensions can be projected to lower dimensions as a tessellated pattern. Penrose two-dimensional mosaic.

“Using this quasi-periodic sequence, we give the system A complex evolution that cancels out all errors that occur At the border”, he explained Dumitrescu in one Communication From the Simons Foundation. beside, denotes the qubits farthest from the center of its configuration at any time. “Therefore, the edge remains quantum-mechanically coherent. More than you’d expect.”

Fibonacci-like laser pulses made edge qubits more robust. More robust and long-lived quantum systems are a vital need for the future of quantum computing. If needed Followed by fire cubits A very specific mathematical rhythm of laser pulses to keep a quantum computer in a state of entanglement, if Physicists start tuning their lasers.

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