Harvard Scientists Use Tiny Sound Waves To Protect Quantum Information

Researchers at Harvard School of Engineering and Applied Sciences protected a spin qubit in diamond using mechanical vibrations—phonons—instead of microwave pulses. The 'all-mechanical coherence protection' method extended coherence time by about three times and achieved a Rabi frequency of 800 MHz. The work was published in Nature Physics.

• Coherence of spin qubit in diamond extended by about 3 times
• Achieved Rabi frequency of 800 MHz for fast spin control
• Phonons simultaneously transfer and protect information in the resonator
• Work published in Nature Physics, supported by NSF and US Air Force