Toward Long-Range Entanglement between Electrically Driven Single-Molecule Magnets

Abstract

Over the past two decades, several molecules have been explored as possible building blocks of a quantum computer, a device that would provide exponential speedups for a number of problems, including the simulation of large, strongly correlated chemical systems. Achieving strong interactions and entanglement between molecular qubits remains an outstanding challenge. Here, we show that the TbPc 2 single-molecule magnet has the potential to overcome this obstacle due to its sensitivity to electric fields stemming from the hyperfine Stark effect. We show how this feature can be leveraged to achieve long-range entanglement between pairs of molecules using a superconducting resonator as a mediator. Our results suggest that the molecule-resonator interaction is near the edge of the strong-coupling regime and could potentially pass into it given a more detailed, quantitative understanding of the TbPc 2 molecule. Graphical TOC EntryKeywords single molecule magnet, TbPc 2 molecule, long-range entanglement, hyperfine Stark effect, superconducting resonator, strong-coupling limit Recently, a qubit candidate with remarkable properties was experimentally demonstrated by Thiele et al.: 16 the SMM TbPc 2 , which features a nuclear spin as the qubit, with the attractive and unusual property of being electrically controllable. This combines the best of both worlds: long-lived qubit coherence with fast controllability. This recent exciting

A proposal for using molecular spin qudits as quantum simulators of light–matter interactions

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Octahedral Hexachloro Environment of Dy3+ with Slow Magnetic Relaxation and Luminescent Properties

“…In particular, the pioneering works on bis (phthalocyaninato)-lanthanide complexes have largely contributed to the success of this approach. [25,26] Since then, different ligands were synthesized to tailor the coordination sphere around the lanthanide ion, giving the possibility to establish magneto-structural correlations, especially concerning the symmetries of the ligand field around the magnetic centre (C 1 , D 5h , D 4d, C 3v ….). [27][28][29][30][31][32][33][34] Nevertheless, difficulties to reach certain symmetries remain, principally related to the fact that lanthanide ions tends to present high coordination numbers.…”

Time-dependent spintronic anisotropy in magnetic molecules

“…Molecular magnetism is a rapidly developing area of theoretical and experimental research, providing concepts for novel applications in spintronic devices and quantum technologies [1][2][3][4][5][6][7][8][9][10]. Single-molecule magnets (SMM), in particular those of large spin (S 1), are especially appealing due to their unique magnetic characteristics and a wide perspective of engineering and synthesizing new specimen with sought properties [3].…”