Eric A. Arsenault
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View article: Rydberg Exciton Dynamics in the Blockade Regime of Cu2O
Rydberg Exciton Dynamics in the Blockade Regime of Cu2O Open
Hosting giant Rydberg excitons with principal quantum numbers up to n = 30, cuprous oxide (Cu2O) provides a rare solid-state setting for exploring Rydberg physics, as exemplified by the blockade effect. Here we access the strongly interact…
View article: Observing the Birth of Rydberg Exciton Fermi Polarons on a Moire Fermi Sea
Observing the Birth of Rydberg Exciton Fermi Polarons on a Moire Fermi Sea Open
The optical spectra of two-dimensional (2D) semiconductors are dominated by tightly bound excitons and trions. In the low doping limit, trions are often described as three-body quasiparticles consisting of two electrons and one hole or vic…
View article: Observation of Coherent Ferrons
Observation of Coherent Ferrons Open
Excitation of ordered quantum phases gives rise to collective modes and quasiparticles, as exemplified by spin waves and magnons emerging from magnetic order. Extending this paradigm to ferroelectric materials suggests the existence of pol…
View article: Time-domain signatures of distinct correlated insulators in a moiré superlattice
Time-domain signatures of distinct correlated insulators in a moiré superlattice Open
View article: Coherence in Chemistry: Foundations and Frontiers
Coherence in Chemistry: Foundations and Frontiers Open
Coherence refers to correlations in waves. Because matter has a wave-particle nature, it is unsurprising that coherence has deep connections with the most contemporary issues in chemistry research (e.g., energy harvesting, femtosecond spec…
View article: Bidirectional Energy Flow in the Photosystem II Supercomplex
Bidirectional Energy Flow in the Photosystem II Supercomplex Open
The water-splitting capability of Photosystem II (PSII) of plants and green algae requires the system to balance efficient light harvesting along with effective photoprotection against excitation in excess of the photosynthetic capacity, p…
View article: Time-Domain Signatures of Distinct Correlated Insulators in a Moiré Superlattice
Time-Domain Signatures of Distinct Correlated Insulators in a Moiré Superlattice Open
Among expanding discoveries of quantum phases in moiré superlattices, correlated insulators stand out as both the most stable and most commonly observed. Despite the central importance of these states in moiré physics, little is known abou…
View article: Coherent Modulation of Two-Dimensional Moiré States with On-Chip THz Waves
Coherent Modulation of Two-Dimensional Moiré States with On-Chip THz Waves Open
Van der Waals (vdW) structures of two-dimensional materials host a broad range of physical phenomena. New opportunities arise if different functional layers may be remotely modulated or coupled in a device structure. Here we demonstrate th…
View article: Two-Dimensional Moiré Polaronic Electron Crystals
Two-Dimensional Moiré Polaronic Electron Crystals Open
Two-dimensional moiré materials have emerged as the most versatile platform for realizing quantum phases of electrons. Here, we explore the stability origins of correlated states in WSe_{2}/WS_{2} moiré superlattices. We find that ultrafas…
View article: Bidirectional Energy Flow in the Photosystem II Supercomplex
Bidirectional Energy Flow in the Photosystem II Supercomplex Open
The water splitting capability of Photosystem II (PSII) of plants and green algae requires the system to balance efficient light harvesting along with effective photoprotection against excitation in excess of photosynthetic capacity 1,2 , …
View article: Two-Dimensional Moiré Polaronic Electron Crystals
Two-Dimensional Moiré Polaronic Electron Crystals Open
Two-dimensional moiré materials have emerged as the most versatile platforms for realizing quantum phases of electrons. Here, we explore the stability origins of correlated states in WSe2/WS2 moiré superlattices. We find that ultrafast ele…
View article: From antenna to reaction center: Pathways of ultrafast energy and charge transfer in photosystem II
From antenna to reaction center: Pathways of ultrafast energy and charge transfer in photosystem II Open
The photosystem II core complex (PSII-CC) is the smallest subunit of the oxygenic photosynthetic apparatus that contains core antennas and a reaction center, which together allow for rapid energy transfer and charge separation, ultimately …
View article: Concerted Electron-Nuclear Motion in Proton-Coupled Electron Transfer-Driven Grotthuss-Type Proton Translocation
Concerted Electron-Nuclear Motion in Proton-Coupled Electron Transfer-Driven Grotthuss-Type Proton Translocation Open
Photoinduced proton-coupled electron transfer and long-range two-proton transport via a Grotthuss-type mechanism are investigated in a biomimetic construct. The ultrafast, nonequilibrium dynamics are assessed via two-dimensional electronic…
View article: The initial charge separation step in oxygenic photosynthesis
The initial charge separation step in oxygenic photosynthesis Open
View article: 第60回年会予稿集
第60回年会予稿集 Open
From 7:41 to 8:05, the frequency will be increased to every 3 minutes.
View article: Vibronic coupling in light-harvesting complex II revisited
Vibronic coupling in light-harvesting complex II revisited Open
We discuss our recent theoretical work on vibronic coupling mechanisms in a\nmodel energy transfer system in the context of previous 2DEV experiments on a\nnatural light-harvesting system, light-harvesting complex II (LHCII), where\nvibron…
View article: The initial charge separation step in oxygenic photosynthesis
The initial charge separation step in oxygenic photosynthesis Open
Photosystem II is crucial for life on Earth as it provides oxygen as a result of photoinduced electron transfer and water splitting reactions. The excited state dynamics of the photosystem II-reaction center (PSII-RC) has been a matter of …
View article: Two-dimensional electronic–vibrational spectroscopy: Exploring the interplay of electrons and nuclei in excited state molecular dynamics
Two-dimensional electronic–vibrational spectroscopy: Exploring the interplay of electrons and nuclei in excited state molecular dynamics Open
Two-dimensional electronic–vibrational spectroscopy (2DEVS) is an emerging spectroscopic technique which exploits two different frequency ranges for the excitation (visible) and detection (infrared) axes of a 2D spectrum. In contrast to de…
View article: Electron–Nuclear Dynamics Accompanying Proton-Coupled Electron Transfer
Electron–Nuclear Dynamics Accompanying Proton-Coupled Electron Transfer Open
Although photoinduced proton-coupled electron transfer (PCET) plays an essential role in photosynthesis, a full understanding of the mechanism is still lacking due to the complex nonequilibrium dynamics arising from the strongly coupled el…
View article: The role of mixed vibronic Qy-Qx states in green light absorption of light-harvesting complex II
The role of mixed vibronic Qy-Qx states in green light absorption of light-harvesting complex II Open
View article: The role of mixed vibronic Qy-Qx bands in the light-harvesting dynamics of the major antenna complex, LHCII
The role of mixed vibronic Qy-Qx bands in the light-harvesting dynamics of the major antenna complex, LHCII Open
The importance of green light for driving natural photosynthesis has long been underappreciated, however, under the presence of strong illumination, green light actually drives photosynthesis more efficiently than red light. This green lig…
View article: Solvent Mediated Excited State Proton Transfer in Indigo Carmine
Solvent Mediated Excited State Proton Transfer in Indigo Carmine Open
Excited state proton transfer (ESPT) is thought to be responsible for the photostability of biological molecules, including DNA and proteins, and natural dyes such as indigo. However, the mechanistic role of the solvent interaction in driv…
View article: Vibronic mixing enables ultrafast energy flow in light-harvesting complex II
Vibronic mixing enables ultrafast energy flow in light-harvesting complex II Open
View article: Solvent Assisted Excited State Proton Transfer in Indigo Carmine Investigated by Two-Dimensional Electronic-Vibrational Spectroscopy
Solvent Assisted Excited State Proton Transfer in Indigo Carmine Investigated by Two-Dimensional Electronic-Vibrational Spectroscopy Open
The solvent dependent electronic excited state deactivation dynamics of Indigo Carmine is mapped by the two-dimensional electronic-vibrational spectroscopy (2DEV). The H-bonding ability of the solvent has been found to assist the excited s…
View article: Two-dimensional electronic vibrational spectroscopy and ultrafast excitonic and vibronic photosynthetic energy transfer
Two-dimensional electronic vibrational spectroscopy and ultrafast excitonic and vibronic photosynthetic energy transfer Open
2-Dimensional electronic vibrational spectroscopy presents a novel experimental and theoretical approach to study energy transfer.
View article: Two-dimensional electronic-vibrational spectroscopic study of conical intersection dynamics: an experimental and electronic structure study
Two-dimensional electronic-vibrational spectroscopic study of conical intersection dynamics: an experimental and electronic structure study Open
The relaxation from the lowest singlet excited state of the triphenylmethane dyes, crystal violet and malachite green, is studied via two-dimensional electronic-vibrational (2DEV) spectroscopy.
View article: A REINVESTIGATION OF THE ELECTRONIC PROPERTIES OF 2-BROMOPYRIDINE WITH HIGH-RESOLUTION MICROWAVE SPECTROSCOPY
A REINVESTIGATION OF THE ELECTRONIC PROPERTIES OF 2-BROMOPYRIDINE WITH HIGH-RESOLUTION MICROWAVE SPECTROSCOPY Open
The rotational spectrum of 2-bromopyridine (ce{C5H4BrN}) was reinvestigated in the frequency range of 10-15.5 GHz by high-resolution Fourier transform microwave (FTMW) spectroscopy. The new observations of $^{14}$ce{N} hyperfine splittings…
View article: NUCLEAR QUADRUPOLE COUPLING IN DUE TO THE PRESENCE OF TWO IODINE NUCLEI
NUCLEAR QUADRUPOLE COUPLING IN DUE TO THE PRESENCE OF TWO IODINE NUCLEI Open
The rotational spectrum of diiodosilane was measured with a jet-pulsed, cavity Fourier transform microwave spectrometer over the frequency range 8.8 GHz to 15 GHz and assigned for the first time. The complete nuclear quadrupole coupling (N…
View article: MICROWAVE SPECTRUM AND STRUCTURE OF THE METHANE-PROPANE COMPLEX
MICROWAVE SPECTRUM AND STRUCTURE OF THE METHANE-PROPANE COMPLEX Open
Methane is exceptional in its solid-phase orientational disorder that persists down to 24 K. Only below that temperature does the structure become partially ordered, and full crystallinity requires even lower temperatures and high pressure…
View article: A study of the conformational isomerism of 1-iodobutane by high resolution rotational spectroscopy
A study of the conformational isomerism of 1-iodobutane by high resolution rotational spectroscopy Open