Academic literature on the topic 'Molecular spin qubits and qudits'

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Journal articles on the topic "Molecular spin qubits and qudits"

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Chiesa, A., P. Santini, E. Garlatti, F. Luis, and S. Carretta. "Molecular nanomagnets: a viable path toward quantum information processing?" Reports on Progress in Physics 87, no. 3 (2024): 034501. http://dx.doi.org/10.1088/1361-6633/ad1f81.

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Abstract Molecular nanomagnets (MNMs), molecules containing interacting spins, have been a playground for quantum mechanics. They are characterized by many accessible low-energy levels that can be exploited to store and process quantum information. This naturally opens the possibility of using them as qudits, thus enlarging the tools of quantum logic with respect to qubit-based architectures. These additional degrees of freedom recently prompted the proposal for encoding qubits with embedded quantum error correction (QEC) in single molecules. QEC is the holy grail of quantum computing and this
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Castro, Alberto, Adrián García-Carrizo, Sebastián Roca, David Zueco, and Fernando Luis. "Optimal Control of Molecular Spin Qudits." Physical Review Applied 17 (June 22, 2022): 064028. https://doi.org/10.1103/PhysRevApplied.17.064028.

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We demonstrate, numerically, the possibility of manipulating the spin states of molecular nanomagnets with shaped microwave pulses designed with quantum optimal control theory techniques. The state-to-state or full gate transformations can be performed in this way in shorter times than using simple monochromatic resonant pulses. This enhancement in the operation rates can therefore mitigate the effect of decoherence. The optimization protocols and their potential for practical implementations are illustrated by simulations performed for a simple molecular cluster hosting a single&nbsp;Gd<sup>3
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Gómez-León, Álvaro, Fernando Luis, and David Zueco. "Dispersive Readout of Molecular Spin Qudits." Physical Review Applied 17 (June 14, 2022): 064030. https://doi.org/10.1103/PhysRevApplied.17.064030.

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We study the physics of a magnetic molecule described by a &ldquo;giant&rdquo; spin with multiple (d&gt;2) spin states interacting with the quantized cavity field produced by a superconducting resonator. By means of the input-output formalism, we derive an expression for the output modes in the dispersive regime of operation. It includes the effect of magnetic anisotropy, which makes different spin transitions addressable. We find that the measurement of the cavity transmission allows us to uniquely determine the spin state of the qudits. We discuss, from an effective Hamiltonian perspective,
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Luis, Fernando, Pablo J. Alonso, Olivier Roubeau, et al. "A dissymmetric [Gd2] coordination molecular dimer hosting six addressable spin qubits." Communications Chemistry 3 (November 20, 2020): 176 1–11. https://doi.org/10.1038/s42004-020-00422-w.

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Artificial magnetic molecules can host several spin qubits, which could then implement small-scale algorithms. In order to become of practical use, such molecular spin processors need to increase the available computational space and warrant universal operations. Here, we design, synthesize and fully characterize dissymetric molecular dimers hosting either one or two Gadolinium(III) ions. The strong sensitivity of Gadolinium magnetic anisotropy to its local coordination gives rise to different zero-field splittings at each metal site. As a result, the [LaGd] and [GdLu] complexes provide realiz
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Mayländer, Maximilian, Su Chen, Emmaline R. Lorenzo, Michael R. Wasielewski, and Sabine Richert. "Exploring Photogenerated Molecular Quartet States as Spin Qubits and Qudits." Journal of the American Chemical Society 143, no. 18 (2021): 7050–58. http://dx.doi.org/10.1021/jacs.1c01620.

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Porfyrakis, Kyriakos. "(Invited) N@C60 and N@C70 for Quantum Information Processing: Beyond Qubits." ECS Meeting Abstracts MA2022-01, no. 11 (2022): 817. http://dx.doi.org/10.1149/ma2022-0111817mtgabs.

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Endohedral fullerenes such as N@C60, where a single atomic nitrogen is trapped inside the fullerene cage, have been proposed as qubit architectures due to the remarkably long relaxation times of their p-electron spins (T1 = 0.375 ms, T2 = 0.25 ms). Molecular quantum computers are still at the fringes of the field as recent developments have focused on other implementations such as superconducting qubits. However, molecular approaches present some advantages such as the ability to use chemical functionalization for scaling up qubit architectures. This, combined with continuous progress on minia
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Moreno-Pineda, Eufemio, Clément Godfrin, Franck Balestro, Wolfgang Wernsdorfer, and Mario Ruben. "Molecular spin qudits for quantum algorithms." Chemical Society Reviews 47, no. 2 (2018): 501–13. http://dx.doi.org/10.1039/c5cs00933b.

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Molecules are promising building blocks for Quantum information processing. Herein we describe how a molecular multilevel nuclear spin qubit (or qudit, where d = 4), known as TbPc<sub>2</sub>, showing all necessary requirements to perform as a molecular hardware platform with a first generation of molecular devices enabling even quantum algorithm operations.
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Chizzini, Mario, Luca Crippa, Luca Zaccardi, et al. "Quantum error correction with molecular spin qudits." Phys. Chem. Chem. Phys. 24 (July 14, 2022): 20030–39. https://doi.org/10.1039/d2cp01228f.

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Thanks to the large number of levels which can be coherently manipulated, molecular spin systems&nbsp;constitute a very promising platform for quantum computing. Indeed, they can embed quantum error&nbsp;correction within single molecular objects, thus greatly simplifying its actual realization in the short term.&nbsp;We consider a recent proposal, which exploits a spin qudit to encode the protected unit, and is tailored&nbsp;to fight pure dephasing. Here we compare the implementation of this code on different molecules, in&nbsp;which the qudit is provided by either an electronic or a nuclear
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Tacchino, Francesco, Alessandro Chiesa, Roberta Sessoli, Ivano Tavernelli, and Stefano Carretta. "A proposal for using molecular spin qudits as quantum simulators of light–matter interactions." J. Mater. Chem. C 9 (July 29, 2021): 10266. https://doi.org/10.1039/d1tc00851j.

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We show that molecular spin qudits provide an ideal platform to simulate the quantum dynamics of photon fields strongly interacting with matter. The basic unit of the proposed molecular quantum simulator could be realized by synthesizing a simple dimer of spin 1/2 and spin S = 3/2 transition metal ions, solely controlled by microwave pulses. The spin S ion is exploited to encode the photon field in a flexible architecture, which enables the digital simulation of a wide range of spin-boson models much more efficiently than by using a multi-qubit register. The effectiveness of our proposal is de
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Chicco, Simone, Alessandro Chiesa, Giuseppe Allodi, et al. "Controlled coherent dynamics of [VO(TPP)], a prototype molecular nuclear qudit with an electronic ancilla." Chem. Sci. 12 (August 5, 2021): 12046. https://doi.org/10.1039/d1sc01358k.

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We show that [VO(TPP)] (vanadyl tetraphenylporphyrinate) is a promising system to implement quantum&nbsp;computation algorithms based on encoding information in multi-level (qudit) units. Indeed, it embeds&nbsp;a nuclear spin 7/2 coupled to an electronic spin 1/2 by hyperfine interaction. This qubit&ndash;qudit unit can&nbsp;be exploited to implement quantum error correction and quantum simulation algorithms. Through&nbsp;a combined theoretical and broadband nuclear magnetic resonance study, we demonstrate that the&nbsp;elementary operations of such algorithms can be efficiently implemented on
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Dissertations / Theses on the topic "Molecular spin qubits and qudits"

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Biard, Hugo. "Lecture d'un couple de qudits nucléaires avec un transistor moléculaire." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAY006/document.

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La réalisation d’un ordinateur quantique est l’un des objectifs scientifiques les plus ambitieux et prometteurs de ce début de siècle.La force du calcul quantique réside dans sa capacité à se placer dans une superposition d’états et à utiliser les interférences entre eux pour dépasser la limite intrinsèque des ordinateurs classiques, qui est la description discrète des phénomènes physiques pourtant continus. Cela leur permettrait théoriquement de simplifier et de résoudre des problèmes insolubles pour les ordinateurs classiques.La première étape dans la réalisation d’un ordinateur quantique es
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Brown, Richard Matthew. "Coherent transfer between electron and nuclear spin qubits and their decoherence properties." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:21e043b7-3b72-44d7-8095-74308a6827dd.

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Conventional computing faces a huge technical challenge as traditional transistors will soon reach their size limitations. This will halt progress in reaching faster processing speeds and to overcome this problem, require an entirely new approach. Quantum computing (QC) is a natural solution offering a route to miniaturisation by, for example, storing information in electron or nuclear spin states, whilst harnessing the power of quantum physics to perform certain calculations exponentially faster than its classical counterpart. However, QCs face many difficulties, such as, protecting the quantum-
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Tesi, Lorenzo. "Multitechnique investigation for rational design of molecular spin qubits." Doctoral thesis, 2019. http://hdl.handle.net/2158/1150777.

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The investigation of the relaxation times of a series of vanadium(IV)-based molecular spin qubits in order to find a correlation to their structural properties. The magnetic system and the lattice structure have been studied by using a multitechnique investigation based on EPR, ac susceptometry, THz spectroscopy and 4D-Inelastic Neutron Scattering. New techniques have been proposed, such as Muon Spin Relaxation spectroscopy, and first preliminary results have been achieved by investigating Dy-based SMMs. A small part of the work is devoted to the characterization of a cobalt(II)-based SMM and
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BENCI, STEFANO. "Enhancing the performance of potential molecular Qubits: insight into the phonons involved in the spin-lattice relaxation." Doctoral thesis, 2021. http://hdl.handle.net/2158/1234475.

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The development of quantum mechanics led to the birth of the quantum computing, a new frontier of the computer science which exploits quantum phenomena such as the quantum states superposition and the entanglement to perform computation. The basic element of a quantum computer is the Qubit, a two-level quantum system that can be addressed whether in 0 or 1 , but also in a coherent superposition of these two states. Among the great variety of potential Qubit systems, molecular electron spins show interesting features as the great tunability of the electronic and magnetic properties as well as t
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Santanni, Fabio. "Molecular approaches for the optimization of electron spin-based quantum bits and quantum logic gates." Doctoral thesis, 2022. http://hdl.handle.net/2158/1262928.

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This work highlights the different possibilities given by a rational chemical approach to obtain molecular-based quantum bits and quantum logic gates as an appealing and alternative platform for implementing quantum computation. This work resumes the three years of the author's work on this subject, mainly presenting and focusing on experimental results obtained for some new potential hydrogen-free molecular qubits, multi-qubit structures, and state-of-the-art EPR-based (Electron Paramagnetic Resonance) experiments on an archetypical vanadyl-based qubit.
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Book chapters on the topic "Molecular spin qubits and qudits"

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Santini, Paolo, Stefano Carretta, and Giuseppe Amoretti. "Magnetic Molecules as Spin Qubits." In Molecular Magnetic Materials. Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527694228.ch5.

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Nakazawa, Shigeaki, Shinsuke Nishida, Kazunobu Sato, et al. "Molecular Spin Qubits: Molecular Optimization of Synthetic Spin Qubits, Molecular Spin AQC and Ensemble Spin Manipulation Technology." In Principles and Methods of Quantum Information Technologies. Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55756-2_28.

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Clemente-Juan, Juan M., Eugenio Coronado, and Alejandro Gaita-Ariño. "Mononuclear Lanthanide Complexes: Use of the Crystal Field Theory to Design Single-Ion Magnets and Spin Qubits." In Lanthanides and Actinides in Molecular Magnetism. Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527673476.ch2.

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Baldoví, J. J., S. Cardona-Serra, A. Gaita-Ariño, and E. Coronado. "Design of Magnetic Polyoxometalates for Molecular Spintronics and as Spin Qubits." In Advances in Inorganic Chemistry. Elsevier, 2017. http://dx.doi.org/10.1016/bs.adioch.2016.12.003.

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Ortaç, Bülend, Saliha Mutlu, Ahmet Hakan Yilmaz, Nergis Arsu, and Sevil Savaskan Yilmaz. "Metal-Metal Oxide, Metal-Organic Framework Nanocomposites for Energy Storage, Thermal Management, Radiation Shielding, and Magnetic Investigations with Quantum Computing." In Transition Metals - From Fundamentals to Frontiers [Working Title]. IntechOpen, 2025. https://doi.org/10.5772/intechopen.1010819.

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This chapter covers metal-organic framework (MOF) design, synthesis, multifunctional applications, energy storage, thermal regulation, phase change materials (PCMs), and radiation shielding using metal/metal oxide nanoparticles and their polymer nanocomposites. The study discusses their potential in energy storage, PCMs, radiation shielding, electromagnetic wave absorption, and quantum computing. Researchers are investigating the magnetism of MOFs for application in molecular spintronics and quantum information systems, perhaps as logic gates or qubits. The chapter claims radiation resistance
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Conference papers on the topic "Molecular spin qubits and qudits"

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Carretta, S. "Molecular Spin Qudits and Chiral-Induced Spin Selectivity: two interesting tools for Quantum Technologies." In 2023 IEEE Nanotechnology Materials and Devices Conference (NMDC). IEEE, 2023. http://dx.doi.org/10.1109/nmdc57951.2023.10343943.

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Sato, Kazuo, Shigeki Nakazawa, Robabeh D. Rahimi, et al. "QUANTUM COMPUTING USING PULSE-BASED ELECTRON-NUCLEAR DOUBLE RESONANCE (ENDOR): MOLECULAR SPIN-QUBITS." In Molecular Realizations of Quantum Computing 2007. WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789812838681_0004.

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Reports on the topic "Molecular spin qubits and qudits"

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Johnson, Grant, and Patrick El-Khoury. Understanding Spin Coherence in Polyoxometalate-Based Molecular Qubits. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/2352242.

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Shultz, David, and Martin Kirk. Optical Generation and Manipulation of Spin Qubits for Molecular Quantum Information Science (DE-SC0020199 Final Report). Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2283553.

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