Searched for: subject%3A%22Nitrogen%255C+Vacancy%22
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Simon, B.G. (author)
Spin waves are the elementary excitations of magnetic materials. They are interesting because of their rich physics and potential role in low-dissipation information technology. To better understand spin-wave transport and explore new ways to control it, this thesis focuses on developing magnetic-imaging techniques based on the single spin of...
doctoral thesis 2023
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Li, Y. (author), Gerritsma, F.A. (author), Kurdi, S. (author), Codreanu, N. (author), Groeblacher, S. (author), Hanson, R. (author), Norte, R.A. (author), van der Sar, T. (author)
Magnetic imaging with nitrogen-vacancy (NV) spins in diamond is becoming an established tool for studying nanoscale physics in condensed matter systems. However, the optical access required for NV spin readout remains an important hurdle for operation in challenging environments such as millikelvin cryostats or biological systems. Here, we...
journal article 2023
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Hermans, S.L.N. (author), Pompili, M. (author), Dos Santos Martins, L. (author), Rodriguez-Pardo Montblanch, A. (author), Beukers, H.K.C. (author), Baier, S. (author), Borregaard, J. (author), Hanson, R. (author)
The generation of entanglement between remote matter qubits has developed into a key capability for fundamental investigations as well as for emerging quantum technologies. In the single-photon, protocol entanglement is heralded by generation of qubit-photon entangled states and subsequent detection of a single photon behind a beam splitter....
journal article 2023
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Polshchykova, Zoya (author)
In this thesis, gate set tomography (GST) has been conducted on the nitrogen vacancy center (NV). Gate set tomography is a protocol for characterization of logic operations (gates) on quantum computing processors. The NV’s electron served as a qubit. The quantum circuits were run both experimentally as well as on an NV-simulator. GST is...
bachelor thesis 2022
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Bonke, Noud (author)
We introduce a method of designing NMR pulse sequences, with a specific focus toward complete decoupling of carbon-13 spin qubits coupled to a nitrogen-vacancy (NV) center in diamond. Using Average Hamiltonian Theory, we calculate different intermediate Hamiltonians corresponding to different rotations implemented by NMR pulses. Two novel pulse...
bachelor thesis 2022
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Ubbens, Otmar (author)
Crucial to the behaviour of a Nitrogen-Vacancy (NV) centre are its excited state cyclicities, determining the ability to perform high fidelity readout, spin-photon entanglement generation or fast spinpumping. This work presents a unified model to predict these excited state cyclicities over a wide range of strain, electric field, magnetic field...
master thesis 2022
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Simon, B.G. (author), Kurdi, S. (author), Carmiggelt, J.J. (author), Borst, M. (author), Katan, A.J. (author), van der Sar, T. (author)
Nitrogen-vacancy (NV) magnetometry is a new technique for imaging spin waves in magnetic materials. It detects spin waves by their microwave magnetic stray fields, which decay evanescently on the scale of the spin-wavelength. Here, we use nanoscale control of a single-NV sensor as a wavelength filter to characterize frequency-degenerate spin...
journal article 2022
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La, Helena (author)
Magnons are quanta of spin waves, i.e. modes of collectively precessing spins. Thermally excited magnons in thin magnetic films generate stray fields at the film surface which can be detected using nitrogen-vacancy (NV) centers. NVs are lattice defects in diamond and are able to couple with magnon stray fields. Assuming a thermal occupancy of...
master thesis 2021
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Teepe, Annick (author)
Generation of high fidelity entanglement between quantum nodes is a key component of a future quantum internet. Heralded entanglement generation of two spatially separated qubit nodes can be established by interference and measurement of two photons, each entangled with one qubit state. The two-node entanglement fidelity is limited by the degree...
master thesis 2021
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Zutt, Nico (author)
The development of quantum computers is a monumental challenge for modern physics. One proposed pathway toward a fully scalable and fault-tolerant quantum computer involves the development of a quantum network. Such a network would have applications ranging from distributed quantum computation to fundamentally secure quantum communication. The...
master thesis 2021
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Simon, B.G. (author), Kurdi, S. (author), La, Helena (author), Bertelli, I. (author), Carmiggelt, J.J. (author), Ruf, M.T. (author), de Jong, N. (author), van den Berg, J.H. (author), Katan, A.J. (author), van der Sar, T. (author)
Controlling magnon densities in magnetic materials enables driving spin transport in magnonic devices. We demonstrate the creation of large, out-of-equilibrium magnon densities in a thin-film magnetic insulator via microwave excitation of coherent spin waves and subsequent multimagnon scattering. We image both the coherent spin waves and the...
journal article 2021
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Storteboom, J. (author), Barbiero, Martina (author), Castelletto, Stefania (author), Gu, Min (author)
The negatively charged nitrogen-vacancy (NV <sup>-</sup>) centre in nanodiamonds (NDs) has been recently studied for applications in cellular imaging due to its better photo-stability and biocompatibility if compared to other fluorophores. Super-resolution imaging achieving 20-nm resolution of NV <sup>-</sup> in NDs has been proved over the...
journal article 2021
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Kwiatkowski, D.P. (author), Cywinski, Lukasz (author), Korbicz, Jarosaw K. (author)
Quantum-to-classical transition still eludes a full understanding. Out of its multiple aspects, one has recently gained an increased attention - the appearance of objective world out of the quantum. One particular idea is that objectivity appears thanks to specific quantum state structures formation during the evolution, known as spectrum...
journal article 2021
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Mouris, Roel (author)
Silicon accelerometers used in the automotive industry should be improved in resolution and accuracy. Exploiting quantum effects in diamond to improve sensing accuracy is a popular technique for nanoscale sensing applications. This thesis will present a new design concept for an accelerometer using these quantum effects for sensing on a...
master thesis 2019
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Gharibaan, Rebecca (author)
The Hamiltonian of the NV center contains unknown parameters, such as the zero-field splitting and the magnetic field. Knowing how the frequency measurements depend on the parameters will give greater understanding<br/>of the NV center. Including the nitrogen nuclear spin gives us the opportunity to find more parameters such as the quadrupole...
bachelor thesis 2019
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Ruf, M.T. (author), IJspeert, M. (author), van Dam, S.B. (author), de Jong, N. (author), van den Berg, J.H. (author), Evers, G.P.H. (author), Hanson, R. (author)
Diamond membrane devices containing optically coherent nitrogen-vacancy (NV) centers are key to enable novel cryogenic experiments such as optical ground-state cooling of hybrid spin-mechanical systems and efficient entanglement distribution in quantum networks. Here, we report on the fabrication of a (3.4 ± 0.2) μm thin, smooth (surface...
journal article 2019
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Fronik, Thom (author)
The nitrogen-vacancy centre in diamond has shown to be a promising solid-state spin-qubit for applications in quantum information processing. NV centres can be used as nodes in quantum communication networks by remote controlled entanglement. The success of such entanglement schemes depends on the probability of photons being emitted in the zero...
bachelor thesis 2018
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Agarwal, Girish (author), Allen, Roland E. (author), Bezděková, Iva (author), Boyd, Robert W. (author), Chen, Goong (author), Hanson, R. (author), Hawthorne, Dean L. (author), Hemmer, Philip (author), Kim, Moochan B. (author), Kocharovskaya, Olga (author), Lee, D. (author), Lidström, Sebastian K. (author), Lidström, Suzy (author), Losert, Harald (author), Maier, Helmut (author), Neuberger, John W. (author), Padgett, Miles J. (author), Raizen, Mark (author), Rajendran, Surjeet (author), Rasel, Ernst (author), Schleich, Wolfgang P. (author), Scully, Marlan O. (author), Shchedrin, Gavriil (author), Shvets, Gennady (author), Sokolov, Alexei (author), Svidzinsky, Anatoly (author), Walsworth, Ronald L. (author), Weiss, Rainer (author), Wilczek, Frank (author), Willner, Alan E. (author), Yablonovich, Eli (author), Zheludev, Nikolay (author)
The Winter Colloquium on the Physics of Quantum Electronics (PQE) has been a seminal force in quantum optics and related areas since 1971. It is rather mind-boggling to recognize how the concepts presented at these conferences have transformed scientific understanding and human society. In January 2017, the participants of PQE were asked to...
journal article 2018
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van Dam, S.B. (author), Ruf, M.T. (author), Hanson, R. (author)
Defect centres in diamond are promising building blocks for quantum networks thanks to a long-lived spin state and bright spin-photon interface. However, their low fraction of emission into a desired optical mode limits the entangling success probability. The key to overcoming this is through Purcell enhancement of the emission. Open Fabry...
journal article 2018
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van Dam, S.B. (author), Humphreys, P.C. (author), Rozpedek, F.D. (author), Wehner, S.D.C. (author), Hanson, R. (author)
Quantum networks distributed over distances greater than a few kilometres will be limited by the time required for information to propagate between nodes. We analyse protocols that are able to circumvent this bottleneck by employing multi-qubit nodes and multiplexing. For each protocol, we investigate the key network parameters that determine...
journal article 2017
Searched for: subject%3A%22Nitrogen%255C+Vacancy%22
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