Two-acoustic-cavity interaction mediated by superconducting artificial atoms
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Two-acoustic-cavity interaction mediated by superconducting artificial atoms Jiao-Jiao Xue1 · Wen-Qing Zhu1 · Yong-Ning He2 · Xin Wang1 · Hong-Rong Li1 Received: 17 March 2020 / Accepted: 20 August 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The circuit quantum acoustodynamics which are studied in hybrid quantum system composed by artificial atoms and surface acoustic waves (SAWs) have drawn a lot of attention when exploring the nonclassical properties of phonons. In this paper, we propose a hybrid system for indirect coupling between multiple SAW resonators via auxiliary transmons. First, by eliminating the qubit degrees of freedom, the energy exchange between two SAW resonators can be observed. In the dispersive regime and suitable rotating frame, Fock state transition and entanglement can be realized between two SAW resonators. Second, by treating transmon as a qutrit and applying a classical driving for qutrit, the correlated phonon pairs between two SAW resonators will be detected. Moreover, by replacing the SAW resonators with acoustic-wave pumps, the acoustically induced transparency phenomenon is realized in our system. The transmon qutrit is potential to use as a switch for propagating acoustic waves, allowing the acoustic waves to be transmitted or backscattered. Keywords Quantum acoustics · Quantum state transfer · Phonon correlation generation · Acoustically induced transparency
1 Introduction In the last two decades, circuit quantum electrodynamics (c-QED) studying light– matter interactions has attracted much attention [1–5]. In c-QED, the cavity on chip
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Xin Wang [email protected] Hong-Rong Li [email protected]
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Shaanxi Province Key Laboratory for Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi’an Jiaotong University, Xi’an 710049, China
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School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an, China 0123456789().: V,-vol
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is measured and manipulated by using artificial atoms. Recently, there has been rapid experimental progress in coupling artificial atoms to various kinds of acoustic waves in solids [6–16]. These hybrid systems sparked the recent development of circuit quantum acoustodynamics (c-QAD), where acoustic phonons take over many of the roles played by photons in c-QED. Due to the slow speed of sound waves, c-QAD provides a new mechanism and parameter regime for quantum information processing. Recently, surface acoustic waves (SAWs) have attracted much interest as an alternative quantum acoustic mode localized on the surface of a piezoelectric substrate [17–25]. It has been demonstrated that SAW resonators can reach quality factors of order 105 at gigahertz frequencies, close to which is observed in superconducting transmission line resonators used in c-QED [26]. Owing to slow speed of the acoustic waves, SAW resonator is much more compact and well isolated than an electromagnetic one and provides more independent modes [27]. Such an a
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