Magnon Lifespan Extended 100-Fold, Bringing Quantum Computers Closer to Reality

Breakthrough in Magnon Research

According to НВ — Техно: May 31, 08:00

Scientists have achieved a major milestone by extending the lifespan of magnons to 18 microseconds-a hundredfold improvement over previous limits. Earlier, these quasiparticles decayed within mere hundreds of nanoseconds, severely restricting their application in quantum technologies. This breakthrough moves researchers a significant step closer to building compact quantum computers.

Led by Andrii Chumak, the team replaced conventional uniform magnons with short-wavelength variants in their experiments. Magnons exist only inside solid materials and exhibit extraordinary traits, such as compressing their wavelength down to just a few nanometers. They also interact with photons, phonons, and other quantum structures, opening up new possibilities for advancing quantum technology.

Experimental Findings

To achieve these results, the researchers cooled crystals of yttrium iron garnet (YIG) to 30 millikelvins using a cryostat. Three different garnet samples were tested during the study, confirming the stability of magnons under these novel conditions. This discovery could prove pivotal in developing next-generation quantum devices capable of performing computations with exceptional efficiency.

The achievement underscores significant potential for quantum technologies that could transform data processing and computing approaches. Extending magnon lifespans may accelerate the creation of new quantum computers able to handle complex calculations faster and more effectively, with far-reaching implications for fields such as:

• materials science
• cryptography
• artificial intelligence

This advancement in magnon research not only enhances the potential for quantum computing but also complements recent innovations in the field. For instance, the successful connection of two quantum chips via a 30-meter pipe has demonstrated the practical application of quantum technologies in generating certifiably random numbers. Such breakthroughs highlight the rapid evolution of quantum systems and their promising future. Explore more about this fascinating development in quantum technology here.