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

Author: Grafiati

Published: 4 June 2025

Last updated: 15 July 2025

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1

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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2

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 Gd<sup>3

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3

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 “giant” spin with multiple (d>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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4

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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5

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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6

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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7

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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8

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 constitute a very promising platform for quantum computing. Indeed, they can embed quantum error correction within single molecular objects, thus greatly simplifying its actual realization in the short term. We consider a recent proposal, which exploits a spin qudit to encode the protected unit, and is tailored to fight pure dephasing. Here we compare the implementation of this code on different molecules, in which the qudit is provided by either an electronic or a nuclear

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9

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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10

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 computation algorithms based on encoding information in multi-level (qudit) units. Indeed, it embeds a nuclear spin 7/2 coupled to an electronic spin 1/2 by hyperfine interaction. This qubit–qudit unit can be exploited to implement quantum error correction and quantum simulation algorithms. Through a combined theoretical and broadband nuclear magnetic resonance study, we demonstrate that the elementary operations of such algorithms can be efficiently implemented on

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11

DAS, RANABIR, AVIK MITRA, S. VIJAY KUMAR, and ANIL KUMAR. "QUANTUM INFORMATION PROCESSING BY NMR: PREPARATION OF PSEUDOPURE STATES AND IMPLEMENTATION OF UNITARY OPERATIONS IN A SINGLE-QUTRIT SYSTEM." International Journal of Quantum Information 01, no. 03 (2003): 387–94. http://dx.doi.org/10.1142/s0219749903000292.

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Theoretical Quantum Information Processing (QIP) has matured from the use of qubits to the use of qudits (systems having states >2). Whereas most of the experimental implementations have been performed using qubits, little experimental work has been carried out using qudits as yet. In this paper we demonstrate experimental realization of a qutrit system by nuclear magnetic resonance (NMR), utilizing deuterium (spin-1) nuclei partially oriented in liquid crystalline phase. Preparation of pseudopure states and implementation of unitary operations are demonstrated in this single-qutrit system,

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12

Daoud, Mohammed, and Maurice R. Kibler. "Generalized Weyl-Heisenberg Algebra, Qudit Systems and Entanglement Measure of Symmetric States via Spin Coherent States. Part II: The Perma-Concurrence Parameter." Symmetry 11, no. 7 (2019): 875. http://dx.doi.org/10.3390/sym11070875.

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This paper deals with separable and entangled qudits | ψ d ⟩ (quantum states in dimension d) constructed from Dicke states made of N = d - 1 qubits. Such qudits present the property to be totally symmetric under the interchange of the N qubits. We discuss the notion of perma-concurrence P d for the qudit | ψ d ⟩ , introduced by the authors (Entropy 2018, 20, 292), as a parameter for characterizing the entanglement degree of | ψ d ⟩ . For d = 3 , the perma-concurrence P 3 constitutes an alternative to the concurrence C for symmetric two-qubit states. We give several expressions of P d (in terms

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13

Gimeno, Ignacio, Ainhoa Urtizberea, Juan Román-Roche, et al. "Broad-band spectroscopy of a vanadyl porphyrin: a model electronuclear spin qudit." Chemical Science 12, no. 15 (2021): 5621–30. http://dx.doi.org/10.1039/d1sc00564b.

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We show that a sizeable electronuclear entanglement of the S = 1/2 and I = 7/2 spins of a vanadyl porphyrin provides the conditions to act as a universal 4-qubit processor, and thus implement quantum error correction at the molecular level.

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14

Carvalho, A. R. R., F. Mintert, S. Palzer, and A. Buchleitner. "Entanglement dynamics under decoherence: from qubits to qudits." European Physical Journal D 41, no. 2 (2006): 425–32. http://dx.doi.org/10.1140/epjd/e2006-00246-4.

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15

Rau, A. R. P. "Symmetries and Geometries of Qubits, and Their Uses." Symmetry 13, no. 9 (2021): 1732. http://dx.doi.org/10.3390/sym13091732.

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The symmetry SU(2) and its geometric Bloch Sphere rendering have been successfully applied to the study of a single qubit (spin-1/2); however, the extension of such symmetries and geometries to multiple qubits—even just two—has been investigated far less, despite the centrality of such systems for quantum information processes. In the last two decades, two different approaches, with independent starting points and motivations, have been combined for this purpose. One approach has been to develop the unitary time evolution of two or more qubits in order to study quantum correlations; by exploit

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16

Tacchino, F., A. Chiesa, R. Sessoli, I. Tavernelli, and S. Carretta. "A proposal for using molecular spin qudits as quantum simulators of light–matter interactions." Journal of Materials Chemistry C 9, no. 32 (2021): 10266–75. http://dx.doi.org/10.1039/d1tc00851j.

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Molecular spin qudits provide an ideal platform to simulate strong light-matter interactions. We propose a possible realization of this setup, consisting of a spin s = 1/2 and S > 1 transition metal ions dimer, solely controlled by microwave pulses.

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17

Levi, Barbara Goss. "Making molecular-spin qubits more robust." Physics Today 69, no. 5 (2016): 17–21. http://dx.doi.org/10.1063/pt.3.3157.

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18

Affronte, Marco, Filippo Troiani, Alberto Ghirri, et al. "Molecular routes for spin cluster qubits." Dalton Transactions, no. 23 (2006): 2810. http://dx.doi.org/10.1039/b515731e.

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19

Tahan, Charles. "Opinion: Democratizing Spin Qubits." Quantum 5 (November 18, 2021): 584. http://dx.doi.org/10.22331/q-2021-11-18-584.

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I've been building Powerpoint-based quantum computers with electron spins in silicon for 20 years. Unfortunately, real-life-based quantum dot quantum computers are harder to implement. Materials, fabrication, and control challenges still impede progress. The way to accelerate discovery is to make and measure more qubits. Here I discuss separating the qubit realization and testing circuitry from the materials science and on-chip fabrication that will ultimately be necessary. This approach should allow us, in the shorter term, to characterize wafers non-invasively for their qubit-relevant proper

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20

Mani, Tomoyasu. "Molecular qubits based on photogenerated spin-correlated radical pairs for quantum sensing." Chemical Physics Reviews 3, no. 2 (2022): 021301. http://dx.doi.org/10.1063/5.0084072.

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Photogenerated spin-correlated radical pairs (SCRPs) in electron donor–bridge–acceptor (D–B–A) molecules can act as molecular qubits and inherently spin qubit pairs. SCRPs can take singlet and triplet spin states, comprising the quantum superposition state. Their synthetic accessibility and well-defined structures, together with their ability to be prepared in an initially pure, entangled spin state and optical addressability, make them one of the promising avenues for advancing quantum information science. Coherence between two spin states and spin selective electron transfer reactions form t

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21

Bahari, Iskandar, Timothy P. Spiller, Shane Dooley, Anthony Hayes, and Francis McCrossan. "Collapse and revival of entanglement between qubits coupled to a spin coherent state." International Journal of Quantum Information 16, no. 02 (2018): 1850017. http://dx.doi.org/10.1142/s021974991850017x.

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We extend the study of the Jayne–Cummings (JC) model involving a pair of identical two-level atoms (or qubits) interacting with a single mode quantized field. We investigate the effects of replacing the radiation field mode with a composite spin, comprising [Formula: see text] qubits, or spin-1/2 particles. This model is relevant for physical implementations in superconducting circuit QED, ion trap and molecular systems. For the case of the composite spin prepared in a spin coherent state, we demonstrate the similarities of this set-up to the qubits-field model in terms of the time evolution,

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22

Yamamoto, Satoru, Shigeaki Nakazawa, Kenji Sugisaki, et al. "Adiabatic quantum computing with spin qubits hosted by molecules." Physical Chemistry Chemical Physics 17, no. 4 (2015): 2742–49. http://dx.doi.org/10.1039/c4cp04744c.

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23

Aravena, Daniel, and Eliseo Ruiz. "Spin dynamics in single-molecule magnets and molecular qubits." Dalton Transactions 49, no. 29 (2020): 9916–28. http://dx.doi.org/10.1039/d0dt01414a.

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24

Kintzel, Benjamin, Michael Böhme, Junjie Liu, et al. "Molecular electronic spin qubits from a spin-frustrated trinuclear copper complex." Chemical Communications 54, no. 92 (2018): 12934–37. http://dx.doi.org/10.1039/c8cc06741d.

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The trinuclear copper(ii) complex [Cu<sub>3</sub>(saltag)(py)<sub>6</sub>]ClO<sub>4</sub> (H<sub>5</sub>saltag = tris(2-hydroxybenzylidene)triaminoguanidine) was synthesized and characterized by experimental as well as theoretical methods.

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25

Lunghi, Alessandro, and Stefano Sanvito. "Electronic spin-spin decoherence contribution in molecular qubits by quantum unitary spin dynamics." Journal of Magnetism and Magnetic Materials 487 (October 2019): 165325. http://dx.doi.org/10.1016/j.jmmm.2019.165325.

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26

Alessandro, Chiesa, Petiziol Francesco, Chizzini Mario, Santini Paolo, and Carretta Stefano. "Theoretical Design of Optimal Molecular Qudits for Quantum Error Correction." J. Phys. Chem. Lett. 13 (July 11, 2022): 6468–74. https://doi.org/10.1021/acs.jpclett.2c01602.

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We pinpoint the key ingredients ruling decoherence in multispin clusters, and we engineer the system Hamiltonian to design optimal molecules embedding quantum error correction. These are antiferromagnetically coupled systems with competing exchange interactions, characterized by many low-energy states in which decoherence is dramatically suppressed and does not increase with the system size. This feature allows us to derive optimized code words, enhancing the power of the quantum error correction code by orders of magnitude. We demonstrate this by a complete simulation

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27

Rubín-Osanz, Marcos, Francois Lambert, Feng Shao, et al. "Chemical tuning of spin clock transitions in molecular monomers based on nuclear spin-free Ni(ii)." Chemical Science 12 (February 25, 2021): 5123–33. https://doi.org/10.1039/D0SC05856D.

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We report the existence of a sizeable quantum tunnelling splitting between the two lowest electronic spin levels of mononuclear Ni complexes. The level anti-crossing, or magnetic “clock transition”, associated with this gap has been directly monitored by heat capacity experiments. The comparison of these results with those obtained for a Co derivative, for which tunnelling is forbidden by symmetry, shows that the clock transition leads to an effective suppression of intermolecular spin–spin interactions. In addition, we show that the quantum tunnelling splitting admits a chem

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28

Baldoví, José J., Lorena E. Rosaleny, Vasanth Ramachandran, et al. "Molecular spin qubits based on lanthanide ions encapsulated in cubic polyoxopalladates: design criteria to enhance quantum coherence." Inorganic Chemistry Frontiers 2, no. 10 (2015): 893–97. http://dx.doi.org/10.1039/c5qi00142k.

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29

Rogers, Ciaran, Deepak Asthana, Adam Brookfield, et al. "Modelling Conformational Flexibility in a Spectrally Addressable Molecular Multi-Qubit Model System." Angewandte Chemie Internation Edition 61, no. 45 (2022): e202207947. https://doi.org/10.1002/anie.202207947.

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Dipolar coupled multi-spin systems have the potential to be used as molecular qubits. Herein we report the synthesis of a molecular multi-qubit model system with three individually addressable, weakly interacting, spin 1=2 centres of differing g-values. We use pulsed Electron Paramagnetic Resonance (EPR) techniques to characterise and separately address the individual electron spin qubits; CuII, Cr7Ni ring and a nitroxide, to determine the strength of the inter-qubit dipolar interaction. Orientation selective Relaxation-Induced Dipolar Modulation Enhancement (os-RIDME) detecting across the CuI

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30

Wasielewski, Michael R. "Light-driven spin chemistry for quantum information science." Physics Today 76, no. 3 (2023): 28–34. http://dx.doi.org/10.1063/pt.3.5196.

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31

Benci, Tesi, Atzori, Sessoli, and Torre. "Spin Dynamics and Phonons, Insights into Potential Molecular Qubits." Proceedings 26, no. 1 (2019): 46. http://dx.doi.org/10.3390/proceedings2019026046.

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32

Bonizzoni, C., A. Ghirri, K. Bader, et al. "Coupling molecular spin centers to microwave planar resonators: towards integration of molecular qubits in quantum circuits." Dalton Transactions 45, no. 42 (2016): 16596–603. http://dx.doi.org/10.1039/c6dt01953f.

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33

Koiller, Belita, Xuedong Hu, Rodrigo B. Capaz, Adriano S. Martins, and Sankar Das Sarma. "Silicon-based spin and charge quantum computation." Anais da Academia Brasileira de Ciências 77, no. 2 (2005): 201–22. http://dx.doi.org/10.1590/s0001-37652005000200002.

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Silicon-based quantum-computer architectures have attracted attention because of their promise for scalability and their potential for synergetically utilizing the available resources associated with the existing Si technology infrastructure. Electronic and nuclear spins of shallow donors (e.g. phosphorus) in Si are ideal candidates for qubits in such proposals due to the relatively long spin coherence times. For these spin qubits, donor electron charge manipulation by external gates is a key ingredient for control and read-out of single-qubit operations, while shallow donor exchange gates are

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34

Sproules, Stephen. "Electronic structure study of divanadium complexes with rigid covalent coordination: potential molecular qubits with slow spin relaxation." Dalton Transactions 50, no. 14 (2021): 4778–82. http://dx.doi.org/10.1039/d1dt00709b.

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35

Huo, Jian-Li, and Shun-Jin Wang. "Quantum logic gates for spin cluster qubits." Journal of Physics B: Atomic, Molecular and Optical Physics 43, no. 12 (2010): 125503. http://dx.doi.org/10.1088/0953-4075/43/12/125503.

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36

Escalera-Moreno, Luis, José J. Baldoví, Alejandro Gaita-Ariño, and Eugenio Coronado. "Spin states, vibrations and spin relaxation in molecular nanomagnets and spin qubits: a critical perspective." Chemical Science 9, no. 13 (2018): 3265–75. http://dx.doi.org/10.1039/c7sc05464e.

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37

Yan, Xiruo, Sebastian Gitt, Becky Lin, et al. "Silicon photonic quantum computing with spin qubits." APL Photonics 6, no. 7 (2021): 070901. http://dx.doi.org/10.1063/5.0049372.

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38

Santanni, Fabio, Andrea Albino, Matteo Atzori, et al. "Probing Vibrational Symmetry Effects and Nuclear Spin Economy Principles in Molecular Spin Qubits." Inorganic Chemistry 60, no. 1 (2020): 140–51. http://dx.doi.org/10.1021/acs.inorgchem.0c02573.

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39

Bao, Yicheng, Scarlett S. Yu, Loïc Anderegg, et al. "Dipolar spin-exchange and entanglement between molecules in an optical tweezer array." Science 382, no. 6675 (2023): 1138–43. http://dx.doi.org/10.1126/science.adf8999.

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Ultracold polar molecules are promising candidate qubits for quantum computing and quantum simulations. Their long-lived molecular rotational states form robust qubits, and the long-range dipolar interaction between molecules provides quantum entanglement. In this work, we demonstrate dipolar spin-exchange interactions between single calcium monofluoride (CaF) molecules trapped in an optical tweezer array. We realized the spin- 1 2 quantum XY model by encoding an effective spin- 1 2 system into the rotational states of the molecules and used it to generate a Bell state through an iSWAP operati

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40

Timco, Grigore A., Stefano Carretta, Filippo Troiani, et al. "Engineering the coupling between molecular spin qubits by coordination chemistry." Nature Nanotechnology 4, no. 3 (2009): 173–78. http://dx.doi.org/10.1038/nnano.2008.404.

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41

Bader, K., S. H. Schlindwein, D. Gudat, and J. van Slageren. "Molecular qubits based on potentially nuclear-spin-free nickel ions." Physical Chemistry Chemical Physics 19, no. 3 (2017): 2525–29. http://dx.doi.org/10.1039/c6cp08161d.

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42

Shiddiq, Muhandis, Dorsa Komijani, Yan Duan, Alejandro Gaita-Ariño, Eugenio Coronado, and Stephen Hill. "Enhancing coherence in molecular spin qubits via atomic clock transitions." Nature 531, no. 7594 (2016): 348–51. http://dx.doi.org/10.1038/nature16984.

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43

Yu, Chung-Jui, Stephen von Kugelgen, Matthew D. Krzyaniak, et al. "Spin and Phonon Design in Modular Arrays of Molecular Qubits." Chemistry of Materials 32, no. 23 (2020): 10200–10206. http://dx.doi.org/10.1021/acs.chemmater.0c03718.

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44

Atzori, Matteo, Stefano Benci, Elena Morra, et al. "Structural Effects on the Spin Dynamics of Potential Molecular Qubits." Inorganic Chemistry 57, no. 2 (2017): 731–40. http://dx.doi.org/10.1021/acs.inorgchem.7b02616.

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45

Lunghi, Alessandro, and Stefano Sanvito. "How do phonons relax molecular spins?" Science Advances 5, no. 9 (2019): eaax7163. http://dx.doi.org/10.1126/sciadv.aax7163.

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The coupling between electronic spins and lattice vibrations is fundamental for driving relaxation in magnetic materials. The debate over the nature of spin-phonon coupling dates back to the 1940s, but the role of spin-spin, spin-orbit, and hyperfine interactions has never been fully established. Here, we present a comprehensive study of the spin dynamics of a crystal of Vanadyl-based molecular qubits by means of first-order perturbation theory and first-principles calculations. We quantitatively determine the role of the Zeeman, hyperfine, and electronic spin dipolar interactions in the direc

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46

Chiesa, Alessandro, Paolo Santini, Elena Garlatti, Fernando Luis, and Stefano Carretta. "Molecular nanomagnets: a viable path toward quantum information processing?" Reports on Progress in Physics 87, no. 034501 (2024). https://doi.org/10.1088/1361-6633/ad1f81.

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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 qudit ap

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47

Luis, Fernando, Pablo J. Alonso, Olivier Roubeau, et al. "A dissymmetric [Gd2] coordination molecular dimer hosting six addressable spin qubits." Communications Chemistry 3, no. 1 (2020). http://dx.doi.org/10.1038/s42004-020-00422-w.

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AbstractArtificial 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 provid

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48

Rollano, Victor, Marina C. de Ory, Christian D. Buch, et al. "High cooperativity coupling to nuclear spins on a circuit quantum electrodynamics architecture." Communications Physics 5, no. 1 (2022). http://dx.doi.org/10.1038/s42005-022-01017-8.

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AbstractNuclear spins are candidates to encode qubits or qudits due to their isolation from magnetic noise and potentially long coherence times. However, their weak coupling to external stimuli makes them hard to integrate into circuit quantum electrodynamics architectures, the leading technology for solid-state quantum processors. Here, we study the coupling of 173Yb(III) nuclear spin states in an [Yb(trensal)] molecule to superconducting cavities. Experiments have been performed on magnetically dilute single crystals placed on the inductors of lumped-element LC superconducting resonators wit

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49

Chiesa, Alessandro, Alberto Privitera, Emilio Macaluso, et al. "Chirality-Induced Spin Selectivity: An Enabling Technology for Quantum Applications." Advanced Materials 2300472 (May 12, 2023). https://doi.org/10.1002/adma.202300472.

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Molecular spins are promising building blocks of future quantum technologies thanks to the unparalleled flexibility provided by chemistry, which allows the design of complex structures targeted for specific applications. However, their weak interaction with external stimuli makes it difficult to access their state at the single-molecule level, a fundamental tool for their use, for example, in quantum computing and sensing. Here, an innovative solution exploiting the interplay between chirality and magnetism using the chirality-induced spin selectivity effect on el

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Roca-Jerat, Sebastián, Emilio Macaluso, Alessandro Chiesa, Paolo Santini, and Stefano Carretta. "Simulating open quantum systems with molecular spin qudits." Materials Horizons, 2025. https://doi.org/10.1039/d4mh01512f.

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Abstract:

Molecular nanomagnets represent a natural playground to implement qudits, i.e. logical quantum processing units with d > 2 states. These can provide a remarkable advantage to simulate open quantum systems compared to standard qubit approaches.

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