Results 11 to 20 of about 74,798 (256)
Is orange carotenoid protein photoactivation a single-photon process?
Biophysical Reports, 2022 In all published photoactivation mechanisms of orange carotenoid protein (OCP), absorption of a single photon by the orange dark state starts a cascade of red-shifted OCP ground-state intermediates that subsequently decay within hundreds of milliseconds,
Stanisław Niziński +5 more
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On the application of Two-Photon Absorption for Laser Fault Injection attacks
Transactions on Cryptographic Hardware and Embedded Systems, 2022 Laser Fault Injection (LFI) is considered to be the most powerful semiinvasive fault injection method for implementation attacks on security devices. In this work we discuss for the first time the application of the nonlinear Two-Photon Absorption (TPA)
Bodo Selmke +7 more
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Single Photon Absorption by a Single Quantum Emitter [PDF]
Physical Review Letters, 2008 4 pages, 4 ...
Pinotsi D, Imamoglu A
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Photon number resolution without optical mode multiplication
Nanophotonics, 2023 Common methods to achieve photon number resolution rely on fast on-off single-photon detectors in conjunction with temporal or spatial mode multiplexing.
Vetlugin Anton N. +3 more
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Heralded single-photon absorption by a single atom [PDF]
Nature Physics, 2010 The emission and absorption of single photons by single atomic particles is a fundamental limit of matter-light interaction, manifesting its quantum mechanical nature. At the same time, as a controlled process it is a key enabling tool for quantum technologies, such as quantum optical information technology [1, 2] and quantum metrology [3, 4, 5, 6 ...
N. Piro +9 more
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Frontiers in Nanotechnology, 2022 Electronic and optical properties of single-layer and bilayer armchair graphene nanoribbons are investigated using a first-principles method. Increased nanoribbon width reduces the band gap and causes a red shift in photon absorption energy.
Yijun Ge, Timothy S. Fisher
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Cooperative single-photon absorption at interfaces [PDF]
Chemical Physics Letters, 1994 The pairwise absorption of light by chemically distinct molecules in close proximity can result in their cooperative single-photon excitation. It is shown how new characteristics emerge where the two molecular species concerned lie on opposite sides of a phase boundary or interface, as for example with two immiscible liquids, one polar and the other ...
Andrews, David L., Allcock, Philip
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Removal of a single photon by adaptive absorption [PDF]
Physical Review A, 2001 We present a method to remove, using only linear optics, exactly one photon from a field-mode. This is achieved by putting the system in contact with an absorbing environment which is under continuous monitoring. A feedback mechanism then decouples the system from the environment as soon as the first photon is absorbed.
Calsamiglia, John +3 more
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Witnessing entangled two-photon absorption via quantum interferometry
APL Photonics, 2023 Recent investigations have suggested that the use of non-classical states of light, such as entangled photon pairs, may open new and exciting avenues in experimental two-photon absorption spectroscopy.
Áulide Martínez-Tapia +8 more
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Comparing confocal and two-photon Ca2+ imaging of thin low-scattering preparations
Biophysical Reports, 2023 Ca2+ imaging provides insight into biological processes ranging from subcellular dynamics to neural network activity. Two-photon microscopy has assumed a dominant role in Ca2+ imaging.
Jinbo Cheng +3 more
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