Coherent coupling between a ferromagnetic magnon and a superconducting qubit
Yutaka Tabuchi,Seiichiro Ishino,Atsushi Noguchi,Toyofumi Ishikawa,Rekishu Yamazaki,Koji Usami,Yasunobu Nakamura,Yasunobu Nakamura +7 more
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TLDR
In this paper, the authors demonstrate the coherent coupling between a single-magnon excitation in a millimeter-sized ferromagnetic sphere and a superconducting qubit.Abstract:
Rigidity of an ordered phase in condensed matter results in collective excitation modes spatially extending to macroscopic dimensions. A magnon is a quantum of such collective excitation modes in ordered spin systems. Here, we demonstrate the coherent coupling between a single-magnon excitation in a millimeter-sized ferromagnetic sphere and a superconducting qubit, with the interaction mediated by the virtual photon excitation in a microwave cavity. We obtain the coupling strength far exceeding the damping rates, thus bringing the hybrid system into the strong coupling regime. Furthermore, we use a parametric drive to realize a tunable magnon-qubit coupling scheme. Our approach provides a versatile tool for quantum control and measurement of the magnon excitations and may lead to advances in quantum information processing.read more
Citations
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Quantum information processing with superconducting circuits: a review
TL;DR: The time is ripe for describing some of the recent development of superconducting devices, systems and applications as well as practical applications of QIP, such as computation and simulation in Physics and Chemistry.
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Hybrid quantum systems based on magnonics
TL;DR: In this paper, a new class of hybrid quantum systems based on collective spin excitations in ferromagnetic materials has led to a diverse set of experimental platforms which are outlined in this review article.
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Magnon dark modes and gradient memory.
Xufeng Zhang,Chang-Ling Zou,Chang-Ling Zou,Na Zhu,Florian Marquardt,Liang Jiang,Hong X. Tang +6 more
TL;DR: It is demonstrated that by dissipation engineering, a non-Markovian interaction dynamics between the magnon and the microwave cavity photon can be achieved, which enables a magnon gradient memory to store information in the Magnon dark modes, which decouple from the microwave cavities and thus preserve a long lifetime.
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Magnon-Photon-Phonon Entanglement in Cavity Magnomechanics.
TL;DR: The results indicate that cavity magnomechanical systems could provide a promising platform for the study of macroscopic quantum phenomena and be a genuinely tripartite entangled state against temperature.
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Cavity Optomagnonics with Spin-Orbit Coupled Photons.
Alto Osada,Ryusuke Hisatomi,Atsushi Noguchi,Yutaka Tabuchi,Rekishu Yamazaki,Koji Usami,Mark Sadgrove,Ramachandrarao Yalla,Masahiro Nomura,Yasunobu Nakamura,Yasunobu Nakamura +10 more
TL;DR: The spin-orbit coupled nature of the WGM photons, their geometrical birefringence, and the time-reversal symmetry breaking in the magnon dynamics impose the angular-momentum selection rules in the scattering process and account for the observed phenomena.
References
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Cavity Optomechanics
TL;DR: The field of cavity optomechanics explores the interaction between electromagnetic radiation and nano-or micromechanical motion as mentioned in this paper, which explores the interactions between optical cavities and mechanical resonators.
Journal ArticleDOI
Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics
Andreas Wallraff,David Schuster,Alexandre Blais,Luigi Frunzio,Ren-Shou Huang,Ren-Shou Huang,Johannes Majer,Sushant Kumar,Steven Girvin,Robert Schoelkopf +9 more
TL;DR: It is shown that the strong coupling regime can be attained in a solid-state system, and the concept of circuit quantum electrodynamics opens many new possibilities for studying the strong interaction of light and matter.
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Superconducting circuits for quantum information: an outlook.
TL;DR: For the first time, physicists will have to master quantum error correction to design and operate complex active systems that are dissipative in nature, yet remain coherent indefinitely.
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Observation of the spin Seebeck effect
Ken-ichi Uchida,Saburo Takahashi,K. Harii,Jun'ichi Ieda,Wataru Koshibae,Kazuya Ando,Sadamichi Maekawa,Eiji Saitoh,Eiji Saitoh +8 more
TL;DR: The spin Seebeck effect allows us to pass a pure spin current, a flow of electron spins without electric currents, over a long distance, and is directly applicable to the production of spin-voltage generators, which are crucial for driving spintronic devices.
Journal ArticleDOI
Superconducting quantum circuits at the surface code threshold for fault tolerance
Rami Barends,Julian Kelly,A. Megrant,Andrzej Veitia,Daniel Sank,Evan Jeffrey,Ted White,Josh Mutus,Austin G. Fowler,Brooks Campbell,Yu Chen,Zijun Chen,Benjamin Chiaro,Andrew Dunsworth,Charles Neill,Peter O'Malley,Pedram Roushan,Amit Vainsencher,James Wenner,Alexander N. Korotkov,Andrew Cleland,John M. Martinis +21 more
TL;DR: The results demonstrate that Josephson quantum computing is a high-fidelity technology, with a clear path to scaling up to large-scale, fault-tolerant quantum circuits.