Quantum acoustics

In physics, quantum acoustics is the study of sound under conditions such that quantum mechanical effects are relevant. For most applications, classical mechanics are sufficient to accurately describe the physics of sound. However very high frequency sounds, or sounds made at very low temperatures may be subject to quantum effects.

Quantum acoustics can also refer to attempts within the scientific community to couple superconducting qubits to acoustic waves.[1] One particularly successful method involves coupling a superconducting qubit with a Surface Acoustic Wave (SAW) Resonator and placing these components on different substrates to achieve a higher signal to noise ratio as well as controlling the coupling strength of the components. This allows quantum experiments to verify that the phonons within the SAW Resonator are in quantum fock states by using Quantum tomography.[2] Similar attempts have been made by using bulk acoustic resonators.[3] One consequence of these developments is that it is possible to explore the properties of atoms with a much larger size than found conventionally by modelling them using a superconducting qubit coupled with a SAW Resonator.[4]

See also

References
  1. Chu, Yiwen; Kharel, Prashanta; Renninger, William H.; Burkhart, Luke D.; Frunzio, Luigi; Rakich, Peter T.; Schoelkopf, Robert J. (13 October 2017). "Quantum acoustics with superconducting qubits". Science. 358 (6360): 199–202. arXiv:1703.00342. Bibcode:2017Sci...358..199C. doi:10.1126/science.aao1511. PMID 28935771.
  2. Satzinger, K. J.; Zhong, Y. P.; Chang, H.-S.; Peairs, G. A.; Bienfait, A.; Chou, Ming-Han; Cleland, A. Y.; Conner, C. R.; Dumur, É; Grebel, J.; Gutierrez, I.; November, B. H.; Povey, R. G.; Whiteley, S. J.; Awschalom, D. D.; Schuster, D. I.; Cleland, A. N. (November 2018). "Quantum control of surface acoustic-wave phonons". Nature. 563 (7733): 661–665. arXiv:1804.07308. Bibcode:2018Natur.563..661S. doi:10.1038/s41586-018-0719-5. PMID 30464339.
  3. Chu, Yiwen; Kharel, Prashanta; Yoon, Taekwan; Frunzio, Luigi; Rakich, Peter T.; Schoelkopf, Robert J. (21 November 2018). "Creation and control of multi-phonon Fock states in a bulk acoustic-wave resonator". Nature. 563 (7733): 666–670. arXiv:1804.07426. Bibcode:2018Natur.563..666C. doi:10.1038/s41586-018-0717-7. PMID 30464340.
  4. Andersson, Gustav; Suri, Baladitya; Guo, Lingzhen; Aref, Thomas; Delsing, Per (November 2019). "Non-exponential decay of a giant artificial atom". Nature Physics. 15 (11): 1123–1127. arXiv:1812.01302. Bibcode:2019NatPh..15.1123A. doi:10.1038/s41567-019-0605-6.
  • Maris, Humphrey J. (2012). "Quantum acoustics". AccessScience. McGraw-Hill Education. doi:10.1036/1097-8542.562350.
  • Handbook of Acoustics by Malcolm Crocker has a chapter on quantum acoustics.
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