Quantum acoustics with superconducting qubits
Yiwen Chu,Prashanta Kharel,William H. Renninger,Luke Burkhart,Luigi Frunzio,Peter T. Rakich,Robert Schoelkopf +6 more
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In this article, the authors demonstrate a high frequency bulk acoustic wave resonator that is strongly coupled to a superconducting qubit using piezoelectric transduction and demonstrate basic quantum operations on the coupled qubit-phonon system.Abstract:
The ability to engineer and manipulate different types of quantum mechanical objects allows us to take advantage of their unique properties and create useful hybrid technologies. Thus far, complex quantum states and exquisite quantum control have been demonstrated in systems ranging from trapped ions to superconducting resonators. Recently, there have been many efforts to extend these demonstrations to the motion of complex, macroscopic objects. These mechanical objects have important applications as quantum memories or transducers for measuring and connecting different types of quantum systems. In particular, there have been a few experiments that couple motion to nonlinear quantum objects such as superconducting qubits. This opens up the possibility of creating, storing, and manipulating non-Gaussian quantum states in mechanical degrees of freedom. However, before sophisticated quantum control of mechanical motion can be achieved, we must realize systems with long coherence times while maintaining a sufficient interaction strength. These systems should be implemented in a simple and robust manner that allows for increasing complexity and scalability in the future. Here we experimentally demonstrate a high frequency bulk acoustic wave resonator that is strongly coupled to a superconducting qubit using piezoelectric transduction. In contrast to previous experiments with qubit-mechanical systems, our device requires only simple fabrication methods, extends coherence times to many microseconds, and provides controllable access to a multitude of phonon modes. We use this system to demonstrate basic quantum operations on the coupled qubit-phonon system. Straightforward improvements to the current device will allow for advanced protocols analogous to what has been shown in optical and microwave resonators, resulting in a novel resource for implementing hybrid quantum technologies.read more
Citations
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Topological Photonics
Tomoki Ozawa,Hannah M. Price,Alberto Amo,Nathan Goldman,Mohammad Hafezi,Ling Lu,Mikael C. Rechtsman,David Schuster,Jonathan Simon,Oded Zilberberg,Iacopo Carusotto +10 more
TL;DR: Topological photonics is a rapidly emerging field of research in which geometrical and topological ideas are exploited to design and control the behavior of light as mentioned in this paper, which holds great promise for applications.
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Quantum information processing with superconducting circuits: a review
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Microwave photonics with superconducting quantum circuits
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Remote quantum entanglement between two micromechanical oscillators
Ralf Riedinger,Andreas Wallucks,Igor Marinković,Clemens Löschnauer,Markus Aspelmeyer,Sungkun Hong,Simon Gröblacher +6 more
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Elastic pseudospin transport for integratable topological phononic circuits.
Si-Yuan Yu,Cheng He,Zhen Wang,Fu-Kang Liu,Xiaochen Sun,Zheng Li,Hai-Zhou Lu,Ming-Hui Lu,Xiaoping Liu,Yan-Feng Chen +9 more
TL;DR: An elastic analog of the quantum spin Hall effects in a monolithically scalable configuration is demonstrated, which opens up a route in manipulating elastic waves represented by elastic pseudospins with spin-momentum locking to enhance elastic planar-integrated circuit-level and system-level performance.
References
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