Article
Optics
Karoly Varga-Umbrich, Jozsef S. Bakos, Gagik P. Djotyan, Zsuzsa Sorlei, Gabor Demeter, Peter N. Ignacz, Bela Raczkevi, Janos Szigeti, Miklos A. Kedves
Summary: We present experimental and theoretical results of coherent momentum transfer to rubidium atoms in a magneto-optical trap using counter-propagating frequency-modulated laser pulses. The partially overlapping pulse pairs lead to multiphoton interaction processes, resulting in larger mechanical momentum transferred to the atoms compared to non-overlapping pulse pairs.
EUROPEAN PHYSICAL JOURNAL D
(2022)
Article
Physics, Multidisciplinary
James O'Sullivan, Oscar W. Kennedy, Kamanasish Debnath, Joseph Alexander, Christoph W. Zollitsch, Mantas Simenas, Akel Hashim, Christopher N. Thomas, Stafford Withington, Irfan Siddiqi, Klaus Molmer, John J. L. Morton
Summary: This study introduces a protocol using chirped pulses to encode and decode quantum information, achieving random access and enhancing memory lifetime. By utilizing the coupling of donor spins in silicon and a superconducting cavity, weak, coherent microwave pulses can be stored and retrieved in the microwave regime.
Article
Physics, Fluids & Plasmas
Naum S. Ginzburg, Lev A. Yurovskiy, Alexander S. Sergeev, Irina Zotova, Andrey M. Malkin
Summary: This study examines the formation of solitons in the context of microwave self-induced transparency, where an electromagnetic pulse interacts with a magnetized electron beam under cyclotron resonance. The beam is considered as a medium of nonisochronous unexcited oscillators due to the relativistic dependence of gyrofrequency on particle energy. Through numerical simulations, the stability and feasibility of the obtained soliton solutions are confirmed.
Article
Optics
Qian Cao, Jian Chen, Keyin Lu, Chenhao Wan, Andy Chong, Qiwen Zhan
Summary: Pulse shaping is a powerful tool for generating complex ultrafast optical waveforms, traditionally focusing on temporal waveform synthesis. Recent interest in structuring light in the spatiotemporal domain relies on Fourier analysis. The space-to-time mapping technique allows for direct imprinting of complex spatiotemporal modulation.
PHOTONICS RESEARCH
(2021)
Article
Optics
Mikhail Martyanov, Igor Kuzmin, Anatoly Poteomkin, Sergey Mironov
Summary: Highly efficient fourth-harmonic generation was demonstrated experimentally, utilizing specific crystals and frequency mixing techniques, achieving high energy, high compression, and ultra-wide harmonic spectrum.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Physics, Multidisciplinary
Mangaljit Singh, Muhammad Ashiq Fareed, Valeryia Birulia, Alexander Magunov, Alexei N. Grum-Grzhimailo, Philippe Lassonde, Antoine Laramee, Romain Marcelino, Ramin Ghahri Shirinabadi, Francois Legare, Tsuneyuki Ozaki, Vasily Strelkov
Summary: Studying the dynamics of dark autoionizing states is challenging due to their short lifetime, but high-order harmonic generation has emerged as a promising method. In this study, a new type of ultrafast resonance state resulting from the coupling between Rydberg and a dark autoionizing state dressed by a laser photon is demonstrated. This induced resonance can be leveraged to investigate the dynamics of a single dark autoionizing state and the transient changes in real states due to their overlap with laser-dressed states. Additionally, the generation of coherent ultrafast extreme ultraviolet light for advanced science applications is possible.
PHYSICAL REVIEW LETTERS
(2023)
Article
Biochemistry & Molecular Biology
Zuofei Hong, Han Zhang, Shaolin Ke
Summary: The study introduces the cascaded dual-chirped optical parametric amplification technique for efficient generation of few-cycle infrared laser pulses, offering broad application prospects and high conversion efficiency.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Physics, Multidisciplinary
Thomas Wilkason, Megan Nantel, Jan Rudolph, Yijun Jiang, Benjamin E. Garber, Hunter Swan, Samuel P. Carman, Mahiro Abe, Jason M. Hogan
Summary: Floquet engineering offers a compelling approach for designing the time evolution of periodically driven systems. By implementing periodic atom-light coupling, efficient atom optics on strontium atoms have been achieved, which can be used to compensate for differential Doppler shifts in large momentum transfer atom interferometers.
PHYSICAL REVIEW LETTERS
(2022)
Article
Spectroscopy
Michele Marrocco
Summary: By studying the Raman coherence of electronically off-resonant transitions and Liouville-space wavepacket representation, it is demonstrated that the classical approach is equally effective in reproducing experimental results when influenced by chirped femtosecond laser pulses.
JOURNAL OF RAMAN SPECTROSCOPY
(2021)
Article
Materials Science, Multidisciplinary
Ting Wan, Tengfei Wang, Handa Zhang, Changshui Chen
Summary: This paper establishes an efficient cascaded sum frequency generation model based on Stark-chirped rapid adiabatic passage and proposes a method for synthesizing a white laser source. The research findings demonstrate the influence of coupling delay parameters and pump intensity on wavelength conversion efficiency. Ultimately, a white laser source with a color temperature of 6500K is successfully synthesized through adjusting these parameters.
RESULTS IN PHYSICS
(2021)
Article
Optics
V Shumakova, E. Schubert, T. Balciunas, M. Matthews, S. Alisauskas, D. Mongin, A. Pugzlys, J. Kasparian, A. Baltuska, J-P Wolf
Summary: The research found that mid-IR laser pulses can generate high yields of nanometric and sub-mu m aerosols, which cannot be explained by traditional mechanisms. This discovery reveals a new mechanism for aerosol stabilization and growth.
Article
Chemistry, Multidisciplinary
Li Zeng, Xiaofan Wang, Yifan Liang, Huaiqian Yi, Weiqing Zhang, Xueming Yang
Summary: The field of ultrafast science has grown significantly in the past decade, thanks to advancements in optical and laser technologies. High-power ultrafast free-electron lasers (FELs) offer new possibilities for studying molecular dynamics and nonlinear processes in materials. This study presents a novel approach for producing high-power femtosecond FEL pulses using chirped-pulse amplification in echo-enabled harmonic generation.
APPLIED SCIENCES-BASEL
(2023)
Article
Optics
A. G. Yastremskii, S. A. Yampolskaya, V. F. Losev, Yu. N. Panchenko, A. Puchikin
Summary: An algorithm is proposed for simulating the time-frequency energy distribution of chirped Gaussian laser beams during amplification. This algorithm utilizes the Wigner distribution function and the concept of a physical spectrum to describe the laser radiation in the time-frequency domain and model its evolution in terms of space, energy, and spectral characteristics using the photon transfer equation. Comparison between numerical simulation results and experimental measurements in a XeF(C-A) gas amplifier of a THL-100 hybrid laser system validates the applicability of the proposed model.
Article
Optics
Evgeny A. Perevezentsev, Malte Per Siems, Daniel Richter, Ivan B. Mukhin, Ria G. Kraemer, Anton I. Gorokhov, Mikhail R. Volkov, Stefan Nolte
Summary: The first steps towards developing and characterizing next-generation chirped volume Bragg gratings (CVBGs) using fs laser inscription were taken. CVBGs with a 3 x 3 mm2 aperture and a length of almost 12 mm were successfully created on fused silica. Despite the polarization and phase distortions caused by mechanical stresses, a possible solution to this problem was proposed. The small change in the linear absorption coefficient of fused silica allows for the utilization of these gratings in high average power lasers.
Article
Materials Science, Multidisciplinary
S. Grira, N. Boutabba, H. Eleuch
Summary: In this study, the theoretical analysis of Bloch equations for a two-level atom with dephasing was performed, resulting in exact analytical solutions for two different chirped and time-dependent detuned laser pulses. The atomic population inversion and coherence were examined for various initial populations, demonstrating the controllability of stationary population inversion.
RESULTS IN PHYSICS
(2021)
Article
Multidisciplinary Sciences
C. Kokail, C. Maier, R. van Bijnen, T. Brydges, M. K. Joshi, P. Jurcevic, C. A. Muschik, P. Silvi, R. Blatt, C. F. Roos, P. Zoller
Article
Physics, Multidisciplinary
D. Petter, G. Natale, R. M. W. van Bijnen, A. Patscheider, M. J. Mark, L. Chomaz, F. Ferlaino
PHYSICAL REVIEW LETTERS
(2019)
Article
Physics, Multidisciplinary
L. Chomaz, D. Petter, P. Ilzhoefer, G. Natale, A. Trautmann, C. Politi, G. Durastante, R. M. W. van Bijnen, A. Patscheider, M. Sohmen, M. J. Mark, F. Ferlaino
Article
Engineering, Multidisciplinary
Lewis R. B. Picard, Manfred J. Mark, Francesca Ferlaino, Rick van Bijnen
MEASUREMENT SCIENCE AND TECHNOLOGY
(2020)
Article
Physics, Multidisciplinary
Raphael Kaubruegger, Pietro Silvi, Christian Kokail, Rick van Bijnen, Ana Maria Rey, Jun Ye, Adam M. Kaufman, Peter Zoller
PHYSICAL REVIEW LETTERS
(2019)
Article
Physics, Multidisciplinary
Christian Kokail, Rick van Bijnen, Andreas Elben, Benoit Vermersch, Peter Zoller
Summary: The paper discusses an efficient tomographic protocol for studying entanglement structures in quantum many-body systems using few measurements. The protocol allows for the measurement of entanglement spectra in spin systems and has been demonstrated on trapped-ion quantum simulators. It addresses the challenge of measuring entanglement in quantum simulation and brings subsystems of tens of spins within reach for current experiments.
Article
Physics, Multidisciplinary
Aniket Rath, Rick van Bijnen, Andreas Elben, Peter Zoller, Benoit Vermersch
Summary: By combining randomized measurement protocols with importance sampling and utilizing classical techniques of machine learning and tensor networks, entanglement can be characterized in significantly larger quantum systems in a more efficient way, leading to a drastic reduction in statistical errors and required number of measurements.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Christian Kokail, Bhuvanesh Sundar, Torsten Zache, Andreas Elben, Benoit Vermersch, Marcello Dalmonte, Rick van Bijnen, Peter Zoller
Summary: This study describes a protocol for learning the structure of the entanglement Hamiltonian by deforming the many body Hamiltonian physically realized on a quantum device. Optimal variational parameters are determined through a feedback loop involving quench dynamics and classical optimization, resulting in excellent agreement of the EH with Bisognano-Wichmann predictions in the ground state of Fermi-Hubbard models. Subsequent on-device spectroscopy allows for a direct measurement of the entanglement spectrum.
PHYSICAL REVIEW LETTERS
(2021)
Article
Multidisciplinary Sciences
Christian D. Marciniak, Thomas Feldker, Ivan Pogorelov, Raphael Kaubruegger, Denis V. Vasilyev, Rick van Bijnen, Philipp Schindler, Peter Zoller, Rainer Blatt, Thomas Monz
Summary: This article demonstrates a programmable quantum sensor that utilizes quantum entanglement to achieve sensing close to the fundamental limits of quantum mechanics. By optimizing input states and measurement operators, the researchers improved the sensing performance while reducing the number of averages required. This study provides new insights for the development of quantum sensors.
Article
Physics, Multidisciplinary
Simon Hollerith, Kritsana Srakaew, David Wei, Antonio Rubio-Abadal, Daniel Adler, Pascal Weckesser, Andreas Kruckenhauser, Valentin Walther, Rick van Bijnen, Jun Rui, Christian Gross, Immanuel Bloch, Johannes Zeiher
Summary: Measurement-based quantum computing relies on rapidly creating large-scale entanglement in a register of stable qubits by engineering distance-selective interactions between Rydberg atom pairs, verified using quantum gas microscopy. Atom loss and coupling to continuum modes are identified as limitations of the present scheme, with outlined paths to mitigate these effects.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Clemens Dlaska, Kilian Ender, Glen Bigan Mbeng, Andreas Kruckenhauser, Wolfgang Lechner, Rick van Bijnen
Summary: This research focuses on achieving a quantum advantage in combinatorial optimization problems on near-term quantum devices. By implementing arrays of trapped neutral atoms coupled with highly excited Rydberg states through lasers, a scalable encoding structure can be directly and easily implemented, overcoming the limitation of limited native interqubit connectivity.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Michael Meth, Viacheslav Kuzmin, Rick van Bijnen, Lukas Postler, Roman Stricker, Rainer Blatt, Martin Ringbauer, Thomas Monz, Pietro Silvi, Philipp Schindler
Summary: In this study, a method for implementing quantum-encoded tensor-network (TN) states on an ion-trap quantum computer is proposed, with the ground states of the extended Su-Schrieffer-Heeger model as a case study. The generated states are characterized and verified to possess topological order through estimation of topological invariants.
Article
Quantum Science & Technology
Andreas Kruckenhauser, Rick van Bijnen, Torsten Zache, Marco Di Liberto, Peter Zoller
Summary: In this study, a toolbox for manipulating arrays of high-dimensional hydrogen-like Rydberg atoms is developed. The researchers utilize the SO(4) symmetry to characterize the effects of various fields on the well-structured manifolds of these states. They also construct generalized large-spin Heisenberg models and demonstrate their applications in quantum simulation and quantum information processing.
QUANTUM SCIENCE AND TECHNOLOGY
(2023)
Article
Quantum Science & Technology
Danny Paulson, Luca Dellantonio, Jan F. Haase, Alessio Celi, Angus Kan, Andrew Jena, Christian Kokail, Rick van Bijnen, Karl Jansen, Peter Zoller, Christine A. Muschik
Summary: Quantum computing is rapidly developing, showing potential in solving challenging problems; an experimental scheme is proposed to study the ground-state properties of 2D quantum electrodynamics, aiming to overcome resource limitations; the variational quantum eigensolver builds quantum circuits, paving the way for surpassing classical simulation capabilities.
Article
Physics, Multidisciplinary
Andreas Elben, Richard Kueng, Hsin-Yuan (Robert) Huang, Rick van Bijnen, Christian Kokail, Marcello Dalmonte, Pasquale Calabrese, Barbara Kraus, John Preskill, Peter Zoller, Benoit Vermersch
PHYSICAL REVIEW LETTERS
(2020)
