The negatively charged silicon monovacancy
The energy damping time in a mechanical resonator is critical to many precision metrology applications, such as timekeeping and force measurements. We present measurements of the phonon lifetime of a microwave-frequency, nanoscale silicon acoustic cavity incorporating a phononic bandgap acoustic shield. Using pulsed laser light to excite a colocalized optical mode of the cavity, we measured the internal acoustic modes with single-phonon sensitivity down to millikelvin temperatures, yielding a phonon lifetime of up to
- NSF-PAR ID:
- 10201554
- Publisher / Repository:
- American Association for the Advancement of Science (AAAS)
- Date Published:
- Journal Name:
- Science
- Volume:
- 370
- Issue:
- 6518
- ISSN:
- 0036-8075
- Page Range / eLocation ID:
- p. 840-843
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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