646 citations · 1.1k across the 24 of their papers we have counts for
23 papers
Two-dimensional fluorescence spectroscopy with quantum entangled photons: Idler-referenced timing without pump detection
Yuta Fujihashi, Akihito Ishizaki
Entangled photons have attracted increasing interest as resources for developing time-resolved spectroscopic techniques. Theoretical studies suggest that their non-classical correl…
Two-dimensional fluorescence spectroscopy with quantum entangled photons and time- and frequency-resolved two-photon coincidence detection
Yuta Fujihashi, Ozora Iso, Ryosuke Shimizu +1
Recent theoretical studies in quantum spectroscopy have emphasized the potential of non-classical correlations in entangled photon pairs for selectively targeting specific nonlinea…
Pathway selectivity in time-resolved spectroscopy using two-photon coincidence counting with quantum entangled photons
Yuta Fujihashi, Akihito Ishizaki, Ryosuke Shimizu
Ultrafast optical spectroscopy is a powerful technique for studying the dynamic processes of molecular systems in condensed phases. However, in molecular systems containing many dy…
Control and enhancement of single-molecule electroluminescence through strong light-matter coupling
Kuniyuki Miwa, Souichi Sakamoto, Akihito Ishizaki
The energetic positions of molecular electronic states at molecule/electrode interfaces are crucial factors for determining the transport and optoelectronic properties of molecular…
Probing exciton dynamics with spectral selectivity through the use of quantum entangled photons
Yuta Fujihashi, Kuniyuki Miwa, Masahiro Higashi +1
Quantum light is increasingly recognized as a promising resource for developing optical measurement techniques. Particular attention has been paid to enhancing the precision of the…
Achieving two-dimensional optical spectroscopy with temporal and spectral resolution using quantum entangled three photons
Yuta Fujihashi, Akihito Ishizaki
Recent advances in techniques for generating quantum light have stimulated research on novel spectroscopic measurements using quantum entangled photons. One such spectroscopy techn…
Insights into photosynthetic energy transfer gained from free-energy structure: Coherent transport, incoherent hopping, and vibrational assistance revisited
Akihito Ishizaki, Graham R. Fleming
Giant strides in ultrashort laser pulse technology have enabled real-time observation of dynamical processes in complex molecular systems. Specifically, the discovery of oscillator…
Probing excited-state dynamics with quantum entangled photons: Correspondence to coherent multidimensional spectroscopy
Akihito Ishizaki
Quantum light is a key resource for promoting quantum technology. One such class of technology aims to improve the precision of optical measurements using engineered quantum states…
Controlling the nonadiabatic electron-transfer reaction rate through molecular-vibration polaritons in the ultrastrong coupling regime
Nguyen Thanh Phuc, Pham Quang Trung, Akihito Ishizaki
Recent experiments showed that the chemical reaction rate is modified, either increased or decreased, by strongly coupling a nuclear vibration mode to the single mode of an optical…
Prerequisites for relevant spectral density and convergence of reduced density matrices at low temperatures
Akihito Ishizaki
Hierarchical equations of motion approach with the Drude-Lorentz spectral density has been widely employed in investigating quantum dissipative phenomena. However, it is often comp…
Generation of pseudo-sunlight via quantum entangled photons and the interaction with molecules
Yuta Fujihashi, Ryosuke Shimizu, Akihito Ishizaki
Light incident upon molecules trigger fundamental processes in diverse systems present in nature. However, under natural conditions, such as sunlight illumination, it is impossible…
Precise determination of excitation energies in condensed-phase molecular systems based on exciton-polariton measurements
Nguyen Thanh Phuc, Akihito Ishizaki
The precise determination of the excitation energies in condensed-phase molecular systems is important for understanding system-environment interactions as well as for the prerequi…
Control of Quantum Dynamics of Electron Transfer in Molecular Loop Structures: Spontaneous Breaking of Chiral Symmetry under Strong Decoherence
Nguyen Thanh Phuc, Akihito Ishizaki
Manipulation of quantum systems is the basis for many promising quantum technologies. However, how quantum mechanical principles can be used to manipulate the dynamics of quantum d…
Intramolecular Vibrations Complement the Robustness of Primary Charge Separation in a Dimer Model of the Photosystem II Reaction Center
Yuta Fujihashi, Masahiro Higashi, Akihito Ishizaki
The energy conversion of oxygenic photosynthesis is triggered by primary charge separation in proteins at the photosystem II reaction center. Here, we investigate the impacts of th…
Non-Markovian quantum-classical ratchet for ultrafast long-range electron-hole separation in condensed phases
Akihito Kato, Akihito Ishizaki
In organic photovoltaic systems, a photogenerated molecular exciton in the donor domain dissociates into a hole and an electron at the donor/acceptor heterojunction, and subsequent…
Control of Excitation Energy Transfer in Condensed Phase Molecular Systems by Floquet Engineering
Nguyen Thanh Phuc, Akihito Ishizaki
Excitation energy transfer (EET) is one of the most important processes in both natural and artificial chemical systems including, for example, photosynthetic complexes and organic…
Influences of quantum mechanically mixed electronic and vibrational pigment states in 2D electronic spectra of photosynthetic systems: Strong electronic coupling cases
Yuta Fujihashi, Graham R. Fleming, Akihito Ishizaki
In 2D electronic spectroscopy studies, long-lived quantum beats have recently been observed in photosynthetic systems, and it has been suggested that the beats are produced by quan…
Impact of environmentally induced fluctuations on quantum mechanically mixed electronic and vibrational pigment states in photosynthetic energy transfer and 2D electronic spectra
Yuta Fujihashi, Graham R. Fleming, Akihito Ishizaki
Recently, nuclear vibrational contribution signatures in 2D electronic spectroscopy have attracted considerable interest, in particular as regards interpretation of the oscillatory…
An analytical continuation approach for evaluating emission lineshapes of molecular aggregates and the adequacy of multichromophoric Förster theory
Leonardo Banchi, Gianluca Costagliola, Akihito Ishizaki +1
In large photosynthetic chromophore-protein complexes not all chromophores are coupled strongly, and thus the situation is well described by formation of delocalized states in cert…
Hamiltonian tomography of dissipative systems under limited access: A biomimetic case study
Koji Maruyama, Daniel Burgarth, Akihito Ishizaki +2
The identification of parameters in the Hamiltonian that describes complex many-body quantum systems is generally a very hard task. Recent attention has focused on such problems of…
Spatial propagation of excitonic coherence enables ratcheted energy transfer
Stephan Hoyer, Akihito Ishizaki, K. Birgitta Whaley
Experimental evidence shows that a variety of photosynthetic systems can preserve quantum beats in the process of electronic energy transfer, even at room temperature. However, whe…
Quantum entanglement phenomena in photosynthetic light harvesting complexes
K. Birgitta Whaley, Mohan Sarovar, Akihito Ishizaki
We review recent theoretical calculations of quantum entanglement in photosynthetic light harvesting complexes. These works establish, for the first time, a manifestation of this c…
Quantum entanglement in photosynthetic light harvesting complexes
Mohan Sarovar, Akihito Ishizaki, Graham R. Fleming +1
Light harvesting components of photosynthetic organisms are complex, coupled, many-body quantum systems, in which electronic coherence has recently been shown to survive for relati…