Experimental Realization of Discrete Time Quasicrystals
Experimental Realization of Discrete Time Quasicrystals
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Andi's Writeup
Physicists at Washington University in St. Louis created the first-ever "time quasicrystal" - a new phase of matter that breaks conventional time symmetry patterns[1][2]. The breakthrough, published in Physical Review X in March 2025, demonstrates how a quantum system can spontaneously organize its motion into complex patterns that repeat in time but lack standard periodicity[^2].
The research team, led by Chong Zu, created their time quasicrystal inside a diamond by:
- Using nitrogen beams to create spaces for electrons in the diamond structure
- Applying microwave pulses to initiate rhythmic patterns
- Achieving hundreds of stable oscillation cycles before breakdown[^3]
Unlike regular time crystals which tick with one rhythm, time quasicrystals produce multiple incommensurate frequencies - similar to playing multiple musical notes simultaneously rather than a single note[2]. The system demonstrated robust "subharmonic" responses at these multiple frequencies, proving it was a true new phase of matter rather than just an engineered pattern[1].
The discovery has potential applications in:
- Quantum computing memory storage
- High-precision timekeeping
- Advanced quantum sensors
- Signal processing[^3]
[^1]: Physical Review X - Experimental Realization of Discrete Time Quasi-Crystals
[^2]: Physics Magazine - A New Type of Time Crystal
[^3]: Tech Explorist - WashU physicists created a new phase of matter in the center of a diamond