Earley Lab — Quantum Information Chemistry

We explore how molecular structure shapes quantum and spin behavior, developing new spectroscopic approaches to illuminate quantum phenomena in chemical systems.

A profile photo of Justin D. Earley

Justin D. Earley(he/him/his)

Assistant Professor

Justin joined the School of Molecular Science at Arizona State University in 2024. He received his B.S. in chemistry from the University of Wisconsin - Madison working on coherent multidimensional spectroscopy under the direction of Professor John Wright and Blaise Thompson, Ph.D. Afterwards, he pursued his Ph.D. in physical chemistry at the University of Colorado Boulder joint with the National Renewable Energy Lab on the development and implementation of time-resolved dielectric-loss spectroscopy under the advisement of Professor Garry Rumbles and Professor Obadiah Reid. After graduate school, Justin moved to the department of Mechanical Engineering at University of Colorado Boulder as a postdoctoral fellow working under Professor Greg Rieker on the development of longwave infrared dual comb spectroscopy. Justin is driven by the pursuit of designing measurement technologies to unearth impactful chemistry insights and translate these technologies into real-world applications. He believes quantum information chemistry, particularly quantum molecular sensing, will revolutionize detection and is eager to expand its boundaries.

Our team

Portrait of Venkatesan Kathiresan, Ph.D.

Venkatesan Kathiresan, Ph.D.

Assistant Research Scientist

Ph.D. Madurai Kamaraj University

Portrait of Asish Kumar Dehury, Ph.D.

Asish Kumar Dehury, Ph.D.

Postdoctoral Scholar

Ph.D. CSIR-IMMT India

Portrait of Shivaadith Anbarasu

Shivaadith Anbarasu

PhD Student

1st Year

Portrait of Dylan Giraldo

Dylan Giraldo

Undergraduate

Chemistry B.S.

Portrait of Barrett Mercer

Barrett Mercer

Undergraduate

Chemistry B.S. / Anthropology Minor

Portrait of Madeline Linden

Madeline Linden

Undergraduate

Chemistry B.S. / Mathematics B.S.

Portrait of Sanjay Giridharan

Sanjay Giridharan

Undergraduate

Aerospace Engineering (Astronautics) B.S.E.

Interested in joining?

Spin Chemistry for Quantum

Molecular Qubits

Molecular qubits take the fundamental concept of a quantum superposition of |0⟩ and |1⟩ states and encode it directly into the structure of individual molecules. Rather than engineering quantum states in solid-state devices, trapping atoms with complex laser systems, or photon-fields, molecular qubits harness the intrinsic quantum properties that molecules naturally possess such as electron or nuclear spins. This means we can use the precision tools of synthetic chemistry to literally design and build quantum systems from the ground up.

What makes this molecular approach so powerful? Traditional quantum systems often require extreme conditions: near absolute zero temperatures, ultra-high vacuum, or complex cleanroom fabrication. Molecular qubits, by contrast, can be chemically tailored to optimize their quantum behavior by modifying ligand environments, adjusting the molecular geometry, tuning orbital overlap, or enhancing luminescence.

The potential for molecular qubits is immense with the versatility and scalability chemistry brings. Molecular qubits can operate under milder conditions than many alternatives, making them particularly attractive for quantum sensing applications where you need to detect magnetic fields, temperature changes, or chemical environments in real-world settings. Plus, synthesizing millions of identical molecules is routine chemistry, opening pathways to scalable quantum technologies.

Researchers working with laboratory instrumentation in the Earley Lab

Earley Lab's Approach to Quantum Information Science and Technology (QIST)

Research in the Earley Lab focuses on understanding and controlling molecular qubits at multiple levels. We investigate intramolecular effects such as how the internal structure and electronic environment of individual molecules influence their quantum properties. We study intermolecular effects such as exploring how molecular qubits interact with each other and their surroundings, including the development of molecular qubit arrays for creating entangled quantum systems. Additionally, we develop advanced magnetic spectroscopy techniques to probe and characterize these quantum states with unprecedented precision. Lastly, we apply quantum sensors to study chemical systems, probing electron, energy, and ionic transport processes as well as molecular configuration and identity.

Read more about our research

Recent publications

A scientific figure showing entropy's role in charge separation in 1D semiconductors. The top panel depicts a single-walled carbon nanotube (1D SWCNT) with a dodecaborane dopant molecule attached, showing charge transfer with a positive charge moving along the nanotube. The bottom panel shows a graph plotting binding potential (meV) versus distance along the SWCNT from the counterion (0-10 nm). Two curves are shown: a dashed cyan line labeled 'ΔE (no entropy)' that rises from about -200 meV to -50 meV, and a solid dark blue line labeled 'ΔG (with entropy)' that remains relatively flat around -170 meV, demonstrating how entropy considerations significantly affect the energetics of charge separation.
Advanced Materials (2025)

Revisiting The Role of Entropy for Charge Separation in 1D Pi-Conjugated Semiconductors

J.D. Earley, O.G. Reid, T.L. Murrey, E.A. Doud, A.M. Spokoyny, M.A. Hermosilla-Palacios, G. Rumbles, A.J. Ferguson, and J.L. Blackburn.

https://doi.org/10.1002/adma.202505044

A scientific figure showing dopant effects on graphene nanoribbons. The left panel displays three molecular dopant structures: F₄TCNQ (a planar organic molecule with fluorine and cyano groups), DDB-F₆₀ (a dodecaborate cage cluster connected to a fluorinated aromatic group), and DDB-F₆₀-bp (similar to DDB-F₆₀ but with a biphenyl linker). Each dopant is shown with its chemical structure and green polyhedral representations. The right panel shows a scatter plot correlating P1 Polaron Energy (eV, y-axis, 0.29-0.33) with Hole-Counterion Distance (nm, x-axis, 0.4-1.4). Three data points represent the dopants: F₄TCNQ (blue, top left), DDB-F₆₀ (green, middle), and DDB-F₆₀-bp (brown, bottom right). A diagonal arrow labeled 'Increasing GNR Hole Delocalization' shows the trend from F₄TCNQ to DDB-F₆₀-bp. An inset depicts a graphene nanoribbon structure, illustrating how increased hole-counterion separation leads to enhanced charge delocalization.
ACS Nano (2025)

Polaron Delocalization and Transport in Doped Graphene Nanoribbon Thin Films

M. A. Hermosilla-Palacios, S. Lindenthal, J. D. Earley, T. J. Aubry, D. DeLuca, H. Al Khunaizi, A. M. Spokoyny, J. Zaumseil, A. J. Ferguson, & J. L. Blackburn

https://doi.org/10.1021/acsnano.5c03888

A mechanistic diagram showing photolytic activation of nickel catalysis in cross-coupling reactions. The scheme illustrates how a photosensitizer (PS, shown as a blue circle with a lightbulb) gets excited by light to PS*, which then interacts with a Ni(II) complex bearing X ligands and a bulky tBu-substituted ligand framework. The Ni(II) center undergoes photoinduced reduction to generate Ni(I) (shown in orange), which then participates in the catalytic cycle. The diagram shows formation of radical intermediates (X• and R•) and ultimately leads to product formation (R-H and HX). Key structural elements include the sterically bulky tert-butyl groups on the ligand scaffold and the coordination environment around the nickel center, demonstrating how photochemistry initiates the catalytic process.
Nature Communications (2025)

Photolytic activation of Ni(II)X₂L explains how Ni-mediated cross coupling begins

M. Kudisch, R.X. Hooper, L.K. Valloli, J.D. Earley, A. Zieleniewska, J. Yu, S. DiLuzio, R.W. Smaha, H. Sayre, X. Zhang, M.J. Bird, A.A. Cordones, G. Rumbles & O.G. Reid

https://doi.org/10.1038/s41467-025-60729-x

A scientific figure illustrating electrostatic work effects in ionic photoredox catalysis in low dielectric constant solvents. The image shows ion pair interactions between [Ir(IV)]⁺ (red sphere) and [BArF₄]⁻ (teal sphere) complexes in different oxidation states, connected by arrows indicating high ε₃ solvent conditions. A central molecular structure shows an iridium complex with CF₃-substituted ligands in a gray circular region. The diagram demonstrates how electrostatic interactions change in low dielectric environments, with molecular structures of various substrates shown around the periphery. The figure emphasizes the role of ion pairing and electrostatic work in determining reactivity patterns when the dielectric constant of the solvent is low.

See complete publication list


Lab Highlights

Group photo of the Earley Lab at a bowling eventGroup photo of the Earley Lab at a bowling eventGroup photo of the Earley Lab at a birthday party