![]() ![]() In QEC quantum information stored in a single qubit is distributed across other supporting qubits we say that this information is "encoded" in a logical quantum bit. QEC is the source of much of the great promise supporting our community's aspirations for quantum computing at-scale. ![]() It’s able to draw from validated mathematical approaches used to engineer special “radiation hardened” classical microprocessors deployed in space or other extreme environments where errors are much more likely to occur. Quantum Error Correction - or QEC for short - is an algorithm known to identify and fix errors in quantum computers. Quantum Error CorrectionĬompanies building quantum computers like IBM and Google have highlighted that their roadmaps include the use of “Quantum Error Correction” as they scale to machines with 1000 or more qubits. Right now, instead of the trillions of operations that might be needed to run a full-fledged quantum algorithm, we can typically only perform dozens before noise causes a fatal error. The greater the influence of noise, the shorter the algorithm that can be run before it suffers an error and outputs an incorrect or even useless result. Noise causes the information in the qubits to become randomized - and this leads to errors in our algorithm. Now consider a quantum algorithm, executing many operations across a large number of qubits. By contrast, typical quantum bits become randomized in about one one-thousandth of a second. A typical transistor in a microprocessor can run for about a billion years at a billion operations per second, without ever suffering a hardware fault due to any form of interference. This is known as decoherence.Ĭompared with standard computers, quantum computers are extremely susceptible to noise. When qubits in a quantum computer are exposed to this kind of noise, the information in them gets degraded just the way sound quality is degraded by interference on a call. ![]() Just like a mobile phone call can suffer interference leading it to break up, a quantum computer is susceptible to interference from all sorts of sources, like electromagnetic signals coming from WiFi or disturbances in the Earth’s magnetic field. “Noise” describes all of the things that cause interference in a quantum computer. Here we’ll get to the heart of why quantum computing is really hard: noise and error. Building a universal quantum computer with millions of entangled, coherent quantum bits running complex algorithms is not going to be simple or straightforward. The team then tested their machine to ensure the simulated nonabelions performed just as real ones would do under the same conditions-one such test involved moving the nonabelions to create Borromean rings-and that, the team suggests, showed that they might be used to overcome the need for much of the error correction normally involved in quantum computers.The journey to realizing functional quantum computers will be long and it's a path that Q-CTRL is committed to making as easy as possible for you. Additional manipulation put the kagome in an excited state that allowed for simulating particles with properties of nonabelions. They used this characteristic to entangle 32 ions in a lattice in the form of a kagome, all of which shared the same quantum state. In their design, the trapped ions could be moved around, allowing them to interact if desired. The research involved building a quantum computer based on a chip that produces electric fields that can trap ytterbium ions, which are then used to represent qubits. In this new work, the team have come close by creating a physical simulation of nonabelions in action. But creating, manipulating and doing useful things with them in a quantum computer is challenging. This property makes them potentially useful for creating less error-prone quantum computers. Prior research has found that nonabelions have a unique and useful property-they remember some of their own history. They are not true particles, but instead exist as vibrations that act like particles-certain groups of them are called nonabelions. In this new effort, the researchers have looked to anyons for help.Īnyons are quasiparticles that exist in two dimensions. As scientists work to design and build a truly useful quantum computer, one of the difficulties is trying to account for errors that creep in. ![]()
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