Quantum acoustics explained

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 ^[1] can also refer to attempts within the scientific community to couple superconducting qubits to acoustic waves.^[2] 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.^[3] Similar attempts have been made by using bulk acoustic resonators.^[4] 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.^[5]

Most recently, quantum acoustics has been used as a term to describe the coherent state limit of lattice vibrations, in analogue to quantum optics.^[6]

See also

• Superfluid
• Phonon

External links

• Maris . Humphrey J. . 2012 . 10.1036/1097-8542.562350 . Quantum acoustics . AccessScience . McGraw-Hill Education .
• Handbook of Acoustics by Malcolm Crocker has a chapter on quantum acoustics.
• Quantum Computer Music Foundations, Methods and Advanced Concepts by Eduardo Reck Miranda

Notes and References

1. Web site: Physicists count sound particles with quantum microphone. 2021-11-18. ScienceDaily. en.
2. Chu . Yiwen . Kharel . Prashanta . Renninger . William H. . Burkhart . Luke D. . Frunzio . Luigi . Rakich . Peter T. . Schoelkopf . Robert J. . Quantum acoustics with superconducting qubits . Science . 13 October 2017 . 358 . 6360 . 199–202 . 10.1126/science.aao1511 . 28935771 . 2017Sci...358..199C . 1703.00342 . 206662360 .
3. 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. . Quantum control of surface acoustic-wave phonons . Nature . November 2018 . 563 . 7733 . 661–665 . 10.1038/s41586-018-0719-5 . 30464339 . 2018Natur.563..661S . 1804.07308 . 53711669 .
4. Chu . Yiwen . Kharel . Prashanta . Yoon . Taekwan . Frunzio . Luigi . Rakich . Peter T. . Schoelkopf . Robert J. . Creation and control of multi-phonon Fock states in a bulk acoustic-wave resonator . Nature . 21 November 2018 . 563 . 7733 . 666–670 . 10.1038/s41586-018-0717-7 . 30464340 . 2018Natur.563..666C . 1804.07426 . 53581929 .
5. Andersson . Gustav . Suri . Baladitya . Guo . Lingzhen . Aref . Thomas . Delsing . Per . Non-exponential decay of a giant artificial atom . Nature Physics . November 2019 . 15 . 11 . 1123–1127 . 10.1038/s41567-019-0605-6 . 2019NatPh..15.1123A . 1812.01302 . 119468686 .
6. Aydin . Alhun . Quantum Acoustics Spawns Planckian Resistivity . 2023-12-11 . 2303.06077 . Keski-Rahkonen . Joonas . Heller . Eric J.. cond-mat.str-el .