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We present an experimental method to perform dual-channel lock-in magnetometry of time-dependent magnetic fields using a single spin associated with a nitrogen-vacancy (NV) color center in diamond. We incorporate multi-pulse quantum sensing…

Quantum Physics · Physics 2014-07-03 N. M. Nusran , M. V. Gurudev Dutt

We use a bulk acoustic wave resonator to demonstrate coherent control of the excited orbital states in a diamond nitrogen-vacancy (NV) center at cryogenic temperature. Coherent quantum control is an essential tool for understanding and…

Quantum Physics · Physics 2024-03-19 B. A. McCullian , V. Sharma , H. Y. Chen , J. C. Crossman , E. J. Mueller , G. D. Fuchs

Current typical methods to realize nuclear-nuclear quantum gates require a sequence of electronnuclear quantum gates by using dynamical decoupling techniques, which are implemented at low temperature because of short decoherence and…

Quantum Physics · Physics 2022-04-27 Jiawen Jiang , Q. Chen

The spin chemical potential characterizes the tendency of spins to diffuse. Probing the spin chemical potential could provide insight into materials such as magnetic insulators and spin liquids and aid optimization of spintronic devices.…

Solid-state spin defects are a promising platform for quantum networks. A key requirement is to combine long ground-state spin-coherence times with a coherent optical transition for spin-photon entanglement. Here, we investigate the spin…

We report the experimental observation of mutual synchronization of magnetic nanooscillators driven by pure spin current generated by nonlocal spin injection. We show that the oscillators efficiently synchronize due to the direct spatial…

Mesoscale and Nanoscale Physics · Physics 2016-10-19 S. Urazhdin , V. E. Demidov , R. Cao , B. Divinskiy , V. Tyberkevych , A. Slavin , A. B. Rinkevich , S. O. Demokritov

We report on the coherent dynamics of the spin of an individual magnetic atom coupled to carriers in a semiconductor quantum dot which has been investigated by resonant photoluminescence of the positively charged exciton (X+). We…

Mesoscale and Nanoscale Physics · Physics 2015-09-02 A. Lafuente-Sampietro , H. Boukari , L. Besombes

Coherent control of quantum systems has far-reaching implications in quantum engineering. In this context, coherent population trapping (CPT) involving dark resonances has played a prominent role, leading to a wealth of major applications…

Quantum Physics · Physics 2016-02-03 P. Jamonneau , G. Hétet , A. Dréau , J. -F. Roch , V. Jacques

Nuclear magnetic resonance (NMR) is a powerful method for determining the structure of molecules and proteins. While conventional NMR requires averaging over large ensembles, recent progress with single-spin quantum sensors has created the…

We experimentally demonstrate the use of a single electronic spin to measure the quantum dynamics of distant individual nuclear spins from within a surrounding spin bath. Our technique exploits coherent control of the electron spin,…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 Shimon Kolkowitz , Quirin P. Unterreithmeier , Steven D. Bennett , Mikhail D. Lukin

Quantum sensors, such as the Nitrogen Vacancy (NV) color center in diamond, are known for their exquisite sensitivity, but their performance over time are subject to degradation by environmental noise. To improve the long-term robustness of…

Electron spins of diamond nitrogen-vacancy (NV) centers are important quantum resources for nanoscale sensing and quantum information. Combining NV spins with levitated optomechanical resonators will provide a hybrid quantum system for…

Quantum Physics · Physics 2016-07-21 Thai M. Hoang , Jonghoon Ahn , Jaehoon Bang , Tongcang Li

Hybrid quantum registers consisting of different types of qubits offer a range of advantages as well as challenges. The main challenge is that some types of qubits react only slowly to external control fields, thus considerably slowing down…

Quantum Physics · Physics 2019-12-25 Jingfu Zhang , Swathi S. Hegde , Dieter Suter

Harnessing dipolar spin environments as controllable quantum resources is a central challenge in solid-state quantum technologies. Here, we report the observation of a coherent mesoscopic spin state in a disordered ensemble of…

Quantum Physics · Physics 2026-02-20 Taewoong Yoon , Sangwon Oh , Junghyun Lee , Hyunyong Choi

Understanding and controlling decoherence in open quantum systems is of fundamental interest in science, while achieving long coherence times is critical for quantum information processing. Although great progress was made for individual,…

Mesoscale and Nanoscale Physics · Physics 2023-03-23 Lisanne Sellies , Raffael Spachtholz , Philipp Scheuerer , Jascha Repp

The sensitivity of quantum magnetometers is challenged by control errors and, especially in the solid-state, by their short coherence times. Refocusing techniques can overcome these limitations and improve the sensitivity to periodic…

Quantum Physics · Physics 2014-10-28 Clarice D. Aiello , Masashi Hirose , Paola Cappellaro

Benefiting from both molecular tunability and versatile methods for deployment, optically interfaced molecular spins are a promising platform for quantum technologies such as sensing and imaging. Room-temperature optically detected coherent…

We consider here the problem of a "central spin", with spin quantum number $S \gg 1$, interacting with a set of microscopic spins. Interactions between the microscopic spins are ignored. This model describes magnetic grains or magnetic…

Condensed Matter · Physics 2016-08-31 N. V. Prokof'ev , P. C. E. Stamp

Coherent tripartite interactions among degrees of freedom of completely different nature are instrumental for quantum information and simulation technologies, but they are generally difficult to realize and remain largely unexplored. Here,…

Quantum Physics · Physics 2023-03-01 Xin-Lei Hei , Peng-Bo Li , Xue-Feng Pan , Franco Nori

We propose a hybrid magnonic-oscillator system based on the combination of a spin transfer auto-oscillator and a magnonic waveguide to open new perspectives for spin-wave based circuits. The system is composed of a spin transfer oscillator…

Other Condensed Matter · Physics 2022-12-23 A. Hamadeh , D. Breitbach , M. Ender , A. Koujok , M. Mohseni , F. Kohl , J. Maskill , M. Bechberger , P. Pirro