huge challenge<\/a> in the technology industry. Researchers have proposed the best method is to replace qubits with resonators, where the quantum technology would have a large number of defined states rather than two.<\/p>\nHowever, controlling the state of a resonator has proved to be a challenge in itself. The team at Chalmers have proved there is a way to do this, as the technique allows researchers to generate all previously demonstrated quantum states of light, including the cubic phase state.<\/p>\n
\u201cThe cubic phase state is something that many quantum researchers have been trying to create in practice for twenty years. The fact that we have now managed to do this for the first time is a demonstration of how well our technique works, but the most important advance is that there are so many states of varying complexity, and we have found a technique that can create any of them,\u201d explained Marina Kudra, a doctoral student at the Department of Microtechnology and Nanoscience, and the study\u2019s lead author.<\/p>\n
The future of quantum technology: controlling the state of resonators<\/h3>\n The resonator constructed by the team is a three-dimensional superconducting cavity, and is made of aluminium. Complex superpositions of photons trapped inside it are generated by interaction with a second superconducting circuit.<\/p>\n
The quantum mechanical properties of the photons are controlled by applying a set of electromagnetic pulses, known as gates. The researchers used an algorithm to optimise a specific sequence of simple displacement gates and complex SNAP-gates, which generate the state of photons.<\/p>\n
The team faced challenges throughout the process, one being that the complex gates were too long. To overcome this, they made the SNAP-gates shorter by using advanced control methods to optimise the electromagnetic pulses.<\/p>\n
\u201cThe drastic improvement in the speed of our SNAP gates allowed us to mitigate the effects of decoherence in our quantum controller, pushing this technology one step forward. We have shown that we have full control over our quantum mechanical system,\u201d said Simone Gasparinetti, head of experimental quantum physics at Chalmers.<\/p>\n
The team argued that their new development in quantum technology is \u201con par with the best in the world.\u201d Their main goal is to develop a fully-scalable, integrated quantum computer that is free from qubit errors.<\/p>\n","protected":false},"excerpt":{"rendered":"
Researchers have developed a technique to control quantum states of light, which will pave the way for solving errors in quantum technology.<\/p>\n","protected":false},"author":22,"featured_media":25737,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[24615],"tags":[17008],"acf":[],"yoast_head":"\n
New breakthrough towards efficient error correction in quantum technology<\/title>\n \n \n \n \n \n \n \n \n \n \n \n \n \n\t \n\t \n\t \n \n \n \n \n \n\t \n\t \n\t \n