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Multiple Quantum Coherences from Hyperfine Transitions in a Vanadium(IV) Complex

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/ja507846k· OSTI ID:1596783
 [1];  [2];  [2];  [3]
  1. Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Northwestern University
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Div.
  3. Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry
+ Show Author Affiliations
We report a vanadium complex in a nuclear-spin free ligand field that displays two key properties for an ideal candidate qubit system: long coherence times that persist at high temperature, T2 = 1.2 μs at 80 K, and the observation of quantum coherences from multiple transitions. The electron paramagnetic resonance (EPR) spectrum of the complex [V(C8S8)3]2- displays multiple transitions arising from a manifold of states produced by the hyperfine coupling of the S = 1/2 electron spin and I = 7/2 nuclear spin. Transient nutation experiments reveal Rabi oscillations for multiple transitions. These observations suggest that each pair of hyperfine levels hosted within [V(C8S8)3]2- are candidate qubits. The realization of multiple quantum coherences within a transition metal complex illustrates an emerging method of developing scalability and addressability in electron spin qubits. This study presents a rare molecular demonstration of multiple Rabi oscillations originating from separate transitions. Lastly, these results extend observations of multiple quantum coherences from prior reports in solid-state compounds to the new realm of highly modifiable coordination compounds.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Northwestern University, Evanston, IL (United States)
Sponsoring Organization:
National Science Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1596783
Alternate ID(s):
OSTI ID: 1657172
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 45 Vol. 136; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (24)

Millisecond Coherence Time in a Tunable Molecular Electronic Spin Qubit journal December 2015
Toward the Quantum Computer: Magnetic Molecules Back in the Race journal December 2015
Storage and retrieval of microwave pulses with molecular spin ensembles journal August 2020
Coherent coupling between Vanadyl Phthalocyanine spin ensemble and microwave photons: towards integration of molecular spin qubits into quantum circuits journal October 2017
Quantum coherence in a processable vanadyl complex: new tools for the search of molecular spin qubits journal January 2016
Mapping Magnetic Properties and Relaxation in Vanadium(IV) Complexes with Lanthanides by Electron Paramagnetic Resonance journal December 2019
Synthetic Hilbert Space Engineering of Molecular Qu d its: Isotopologue Chemistry journal February 2019
Nuclear Spin Isomers: Engineering a Et 4 N[DyPc 2 ] Spin Qudit journal July 2017
Nuclear Spin Isomers: Engineering a Et 4 N[DyPc 2 ] Spin Qudit journal July 2017
Molecules Designed to Contain Two Weakly Coupled Spins with a Photoswitchable Spacer journal August 2017
Ligand Radicals as Modular Organic Electron Spin Qubits journal November 2018
Molecular spin qudits for quantum algorithms journal January 2018
A flexible iron( ii ) complex in which zero-field splitting is resistant to structural variation journal January 2016
Giant spin–phonon bottleneck effects in evaporable vanadyl-based molecules with long spin coherence journal January 2016
Progress towards creating optically addressable molecular qubits journal January 2018
Vanadyl dithiolate single molecule transistors: the next spintronic frontier? journal January 2018
Counterion influence on dynamic spin properties in a V( iv ) complex journal January 2019
A concentrated array of copper porphyrin candidate qubits journal January 2019
Chromium( iii )-based potential molecular quantum bits with long coherence times journal January 2019
Field-induced slow magnetic relaxation in low-spin S = 1/2 mononuclear osmium( v ) complexes journal January 2020
Novel Topologies in Vanadium-bis-β-Diketone Chemistry: A [V4] and a [V6] Metallacyclophane journal December 2015
The Rise of Single-Ion Magnets as Spin Qubits journal November 2016
Molecular Spin Qudits for Quantum Algorithms text January 2017
Synthetic Hilbert Space Engineering of Molecular Qudits: Isotopologue Chemistry text January 2019

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Qubit
electron paramagnetic resonance spectroscopy
ligands
nuclear spin
oscillation
quantum
quantum mechanics
rabi oscillations