Article
Optics
Flavie Davidson-Marquis, Julian Gargiulo, Esteban Gomez-Lopez, Bumjoon Jang, Tim Kroh, Chris Mueller, Mario Ziegler, Stefan A. Maier, Harald Kuebler, Markus A. Schmidt, Oliver Benson
Summary: A study has shown modified electromagnetically induced transparency for a non-diffractive beam of light in an on-chip, laterally-accessible hollow-core light cage, demonstrating strong coherent light-matter coupling. The use of alumina nanofilm allows precise tuning of the high-transmission spectral region of the light-cage mode while protecting the polymer against corrosive alkali vapour.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Multidisciplinary Sciences
Kuppusamy Senthil Kumar, Diana Serrano, Aline M. Nonat, Benoit Heinrich, Lydia Karmazin, Loic J. Charbonniere, Philippe Goldner, Mario Ruben
Summary: This study demonstrates the efficient polarization of ground-state nuclear spins in a binuclear Eu(III) complex, laying the foundation for all-optical spin initialization and addressing. Long-lived spectral holes were observed in the optical transition, breaking the limitation previously seen in SHB in REI-based systems.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Multidisciplinary
Dorian Bouchet, Lukas M. Rachbauer, Stefan Rotter, Allard P. Mosk, Emmanuel Bossy
Summary: Researchers propose a general framework to calculate and minimize the fundamental limit of error achievable in decision problems involving scattering systems using coherent probe fields. Through experimental studies on a target located between two disordered scattering media, they demonstrate that optimal light fields can successfully probe the presence of the target with significantly reduced photon numbers compared to unoptimized fields.
PHYSICAL REVIEW LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Junxiang Pei, Xiaohan Wu, Jingyong Huo, Wen-Jun Liu, David Wei Zhang, Shi-Jin Ding
Summary: The study demonstrates thin-film transistor-based photoelectric memories employing blend perovskite quantum dots as a floating gate, achieving multilevel memory cells under programming and erasing modes by imputing high-bandwidth optical signals. Different programming and erasing windows can be obtained under different bandwidth light inputs, showing good data retention and programming/erasing endurance.
Article
Astronomy & Astrophysics
David Edward Bruschi, Symeon Chatzinotas, Frank K. Wilhelm, Andreas Wolfgang Schell
Summary: The study explores the interplay between gravity and quantum coherence in light pulses propagating in curved spacetime, showing that quantum coherence can enhance deformation induced by propagation. It further supports the idea that quantum features, such as coherence, can be used to probe gravitational properties of physical systems. The research focuses on Earth-to-satellite communication setups where the effects of gravity, although weak, can be tested with current satellite technologies.
Article
Physics, Multidisciplinary
Johannes Flick
Summary: Recent experimental advances in strongly coupled light-matter systems have led to the development of general ab initio methods for describing interacting light-matter systems from first principles. This Letter introduces a new gradient-based density functional for quantum-electrodynamical density-functional theory (QEDFT), derived from the adiabatic-connection fluctuation-dissipation theorem. The approximation is benchmarked on small systems in optical cavities and demonstrates relatively low computational costs for larger systems, effectively combining quantum optics with large-scale electronic structure theory.
PHYSICAL REVIEW LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Luhing Hu, Jaeyong Choi, Sumin Hwangbo, Do-Hoon Kwon, Bongkyun Jang, Seunghyeon Ji, Jae-Hyun Kim, Sang-Kook Han, Jong-Hyun Ahn
Summary: A flexible full-color micro-LED display with high mechanical robustness was fabricated by printing quantum dots on a blue micro-LED array. The display exhibits better color gamut and enhanced light conversion efficiency. It can be mounted on various unusual substrates and used for high-speed wireless visible light communication.
NPJ FLEXIBLE ELECTRONICS
(2022)
Article
Optics
Arindam Nandi, Haechan An, Mahdi Hosseini
Summary: By tailoring the spatio-spectral properties of atomic absorption, a periodic array can be effectively carved out from randomly distributed atomic ensembles, leading to collective atomic resonances and coherent backscattering. High levels of coherent backscattering, up to 20%, were observed for light at telecom wavelength from Er ions, forming an effective array with over 5000 centers.
Article
Quantum Science & Technology
L. Nicolas, M. Businger, T. Sanchez Mejia, A. Tiranov, T. Chaneliere, E. Lafitte-Houssat, A. Ferrier, P. Goldner, M. Afzelius
Summary: In this work, a loop-gap microwave resonator is used to simultaneously drive optical and microwave clock transitions in a Yb-171(3+):Y2SiO5 crystal, achieving a Rabi frequency of 0.56 MHz at 2.497 GHz over a 1-cm long crystal. Insights into spin dephasing at very low fields are provided, showing the important role of superhyperfine-induced collapse of the Hahn echo. Manipulation of the effective magnetic moment in Yb-171(3+):Y2SiO5 is demonstrated to suppress the superhyperfine interaction at the clock transition. A spin coherence time of 10.0 +/- 0.4 ms is achieved at a doping concentration of 2 ppm and 3.4 K.
NPJ QUANTUM INFORMATION
(2023)
Article
Materials Science, Multidisciplinary
Joseph Alexander, Gavin Dold, Oscar W. Kennedy, Mantas Simenas, James O'Sullivan, Christoph W. Zollitsch, Sacha Welinski, Alban Ferrier, Eloise Lafitte-Houssat, Tobias Lindstrom, Philippe Goldner, John J. L. Morton
Summary: This study measures and analyzes the spin dynamics in rare-earth doped crystals, exploring the mechanisms affecting spin coherence lifetime in high cooperativity regime. Two methods to mitigate the effects of spectral diffusion are proposed based on the measurements.
Article
Multidisciplinary Sciences
Jeong Ryeol Choi
Summary: This study investigates the characteristics of nonstatic quantum light waves in a coherent state in a static environment, showing that the wave shape varies periodically with manifestations of nonstaticity. The wave displays belly and node patterns as it oscillates, accompanying periodic variations in electric and magnetic energies while conserving total energy. The fluctuations of quadratures vary regularly with time, and the time-varying uncertainty product is always larger than the quantum-mechanically allowed minimal value, being smallest when the wave constitutes a belly or a node.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Davis M. Welakuh, Johannes Flick, Michael Ruggenthaler, Heiko Appel, Angel Rubio
Summary: Recent progress in quantum-optical experiments enables the modification and control of chemical and physical properties of atoms, molecules, and solids by strongly coupling to the quantized field. This study extends the Sternheimer approach to efficiently compute excited-state properties of strongly coupled light-matter systems within the framework of quantum electrodynamical density-functional theory. The method captures the features of strong light-matter coupling and provides an alternative approach for computing excited-state properties of large molecular systems interacting with the quantized electromagnetic field.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2022)
Article
Computer Science, Information Systems
Hasitha Muthumala Waidyasooriya, Hiroki Oshiyama, Yuya Kurebayashi, Masanori Hariyama, Masayuki Ohzeki
Summary: Quantum computing, regarded as the future of computing, faces challenges in error correction. Emulation of quantum circuits in digital computers is important to overcome this limitation. To reduce processing time, a scalable FPGA emulator for simulating quantum Fourier transform is proposed.
Article
Optics
Anton N. Vetlugin
Summary: This paper develops a theory of coherent perfect absorption (CPA) of quantized standing waves considering the subwavelength thickness of the absorber, merging all known quantum effects of CPA and introducing other regimes of CPA including various entangled states. The detailed analysis sheds light on fundamental aspects of quantum light dissipation and its practical implementation in quantum optics and quantum information.
Article
Computer Science, Artificial Intelligence
Fei Yan, Salvador E. Venegas-Andraca, Kaoru Hirota
Summary: Quantum image processing is an interdisciplinary field that aims to surpass the limits of traditional computing by utilizing quantum effects. Key issues in this field include improving quantum image representations, designing quantum algorithms, and developing physical equipment and software architecture.
Article
Optics
Philip J. Bustard, Jennifer Erskine, Duncan G. England, Josh Nunn, Paul Hockett, Rune Lausten, Michael Spanner, Benjamin J. Sussman
Article
Physics, Multidisciplinary
Duncan G. England, Kent A. G. Fisher, Jean-Philippe W. MacLean, Philip J. Bustard, Rune Lausten, Kevin J. Resch, Benjamin J. Sussman
PHYSICAL REVIEW LETTERS
(2015)
Article
Optics
Khabat Heshami, Duncan G. England, Peter C. Humphreys, Philip J. Bustard, Victor M. Acosta, Joshua Nunn, Benjamin J. Sussman
JOURNAL OF MODERN OPTICS
(2016)
Article
Optics
Philip J. Bustard, Duncan G. England, Khabat Heshami, Connor Kupchak, Benjamin J. Sussman
Article
Physics, Multidisciplinary
Duncan G. England, Kent A. G. Fisher, Jean-Philippe W. MacLean, Philip J. Bustard, Khabat Heshami, Kevin J. Resch, Benjamin J. Sussman
PHYSICAL REVIEW LETTERS
(2016)
Article
Multidisciplinary Sciences
Kent A. G. Fisher, Duncan G. England, Jean-Philippe W. MacLean, Philip J. Bustard, Kevin J. Resch, Benjamin J. Sussman
NATURE COMMUNICATIONS
(2016)
Article
Physics, Applied
D. G. England, P. J. Bustard, D. J. Moffatt, J. Nunn, R. Lausten, B. J. Sussman
APPLIED PHYSICS LETTERS
(2014)
Article
Physics, Applied
Frederic Bouchard, Duncan England, Philip J. Bustard, Kate L. Fenwick, Ebrahim Karimi, Khabat Heshami, Benjamin Sussman
Summary: Quantum communication is fundamentally limited by noise, and overcoming noise is crucial for achieving better communication effects. This study proposes a quantum communication platform based on ultrafast optical techniques, which enables high rates and near single-mode quantum signal filtering to dramatically reduce channel noise and improve noise tolerance.
PHYSICAL REVIEW APPLIED
(2021)
Article
Physics, Applied
Duncan England, Frederic Bouchard, Kate Fenwick, Kent Bonsma-Fisher, Yingwen Zhang, Philip J. Bustard, Benjamin J. Sussman
Summary: The picosecond-timescale all-optical switching based on the optical Kerr effect in standard single-mode fiber offers high efficiency and low noise for quantum optics applications, enabling high fidelity operations on quantum states of light.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
Philip J. Bustard, Kent Bonsma-Fisher, Cyril Hnatovsky, Dan Grobnic, Stephen J. Mihailov, Duncan England, Benjamin J. Sussman
Summary: We propose a quantum memory protocol that uses a fiber-integrated cavity to trap photons. The storage and release of quantum states are achieved by controlling the resonance and non-resonance of photons with the cavity. Experimental results demonstrate the ability to store coherent states with THz bandwidth and a high overall efficiency.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
K. A. G. Bonsma-Fisher, P. J. Bustard, C. Parry, T. A. Wright, D. G. England, B. J. Sussman, P. J. Mosley
Summary: The research team demonstrated quantum frequency conversion of single photons in a photonic crystal fiber, which can convert a 1551 nm photon to any wavelength within an ultrabroad range (1226-1408 nm) by tuning only a single pump laser wavelength. The internal and total conversion efficiencies were found to be 12 (1)% and 1.4(2)%, respectively. In the case of converting 1551 to 1300 nm, a heralded g((2))(0) of 0.25(6) was measured for the converted light from an input with g((2))(0) = 0.034(8). The photonic crystal fiber is expected to have various applications in quantum networking.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Connor Kupchak, Philip J. Bustard, Khabat Heshami, Jennifer Erskine, Michael Spanner, Duncan G. England, Benjamin J. Sussman
Article
Optics
Kent A. G. Fisher, Duncan G. England, Jean-Philippe W. MacLean, Philip J. Bustard, Khabat Heshami, Kevin J. Resch, Benjamin J. Sussman
Article
Optics
Philip J. Bustard, Duncan G. England, Khabat Heshami, Connor Kupchak, Benjamin J. Sussman
Article
Optics
Philip J. Bustard, Khabat Heshami, Duncan G. England, Michael Spanner, Benjamin J. Sussman