Article
Physics, Multidisciplinary
Yuan Zhang, Chongxin Shan, Klaus Molmer
Summary: We have developed a theory to describe active frequency measurements of pulsed superradiant emission and obtained consistent results with previous experiments. Our theory can also be applied to frequency measurements of other processes.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
T. R. Tan, C. L. Edmunds, A. R. Milne, M. J. Biercuk, C. Hempel
Summary: The study presents measurements of branching fraction, hyperfine constant, and second-order Zeeman coefficient of the D-5/2 level in Yb-171(+) with significantly reduced uncertainty compared to previous values. The estimated electric quadrupole reduced matrix element and transition frequency data provide benchmarks for quantum-many-body atomic-physics calculations and valuable information for improving quantum information processors based on Yb-171(+).
Article
Physics, Condensed Matter
Nguyen Dinh Hien
Summary: This theoretical study investigates the influence of the confining potential on the magneto-optical absorption linewidth (MOALW) of a quantum well for both intersubband and intrasubband transitions. The results demonstrate the varying effects of structural, material, and external parameters on MOALW, with different contributions from intrasubband and intersubband transitions under different types of confining potentials. The findings of this study are consistent with previous experimental studies.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Optics
K. Kitano, H. Tomida, D. Takei, H. Maeda
Summary: The study investigated the polarization properties of superfluorescence emitted from dense cesium atomic vapor, observing forward directional emissions on specific transitions. The polarizations of the emitted fields were correlated in each laser shot, while their directions fluctuated between shots due to noise.
Article
Chemistry, Multidisciplinary
Alessandra Milloch, Umberto Filippi, Paolo Franceschini, Michele Galvani, Selene Mor, Stefania Pagliara, Gabriele Ferrini, Francesco Banfi, Massimo Capone, Dmitry Baranov, Liberato Manna, Claudio Giannetti
Summary: This study introduces a new artificial lattice platform to simulate and investigate the physics of correlated quantum materials by optical injection of quantum confined excitons. The results demonstrate that this system can simulate important features such as collective phenomena and the excitonic Mott transition, covering a wide range of parameters.
Article
Optics
Anthony Ransford, Conrad Roman, Thomas Dellaert, Patrick McMillin, Wesley C. Campbell
Summary: The method demonstrated in this study for qubit state preparation and measurement (SPAM) based on a weakly open quantum channel achieves higher fidelity even with low detection efficiency. Setup-specific errors from ion loss and imperfect population transfer between qubit eigenstates limit the precision, but with full transfer, higher accuracy can be achieved. High precision revealed errors caused by rare decay events, which were measured and corrected, leading to high fidelity even with limited optical access and low quantum efficiency photon detectors.
Article
Optics
Kenneth DeRose, Tejas Deshpande, Yiping Wang, Tim Kovachy
Summary: In this paper, we present a laser system that performs single-photon atom interferometry on the 698 nm clock transition in ultracold strontium. By coherently combining the power of two titanium:sapphire lasers and phase-locking to an optical reference, we demonstrate chirps of 200 MHz in 2.5 ms. Furthermore, we demonstrate a novel scheme, to the best of our knowledge, to deliver 4 W pulsed beams to the atoms using a mode-cleaning optical fiber with active noise cancellation.
Article
Optics
Jim Skulte, Phatthamon Kongkhambut, Hans Kessler, Andreas Hemmerich, Ludwig Mathey, Jayson G. Cosme
Summary: The study investigates the three-level Dicke model in the presence of dissipation, characterizing incommensurate time crystalline, light-induced, and light-enhanced superradiant states in the phase diagram for the parametrically driven system. The primary application demonstrates the approximation of the shaken atom-cavity system using a parametrically driven dissipative three-level Dicke model.
Article
Physics, Multidisciplinary
Phatthamon Kongkhambut, Hans Kessler, Jim Skulte, Ludwig Mathey, Jayson G. Cosme, Andreas Hemmerich
Summary: By resonantly shaking the pump field in an atom-cavity system, a periodically driven open three-level Dicke model was realized, showing the emergence of a dynamical phase where atoms periodically localize between the antinodes of the pump lattice. This dynamical phase was observed through the periodic switching of relative phase between the pump and cavity fields at a small fraction of the driving frequency, suggesting a time crystalline character.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
S. Doerscher, J. Klose, S. Maratha Palli, Ch. Lisdat
Summary: In order to operate an optical lattice clock with a fractional uncertainty below 10(-17), both electric-dipole (E1) and higher-order multipole interactions, such as electric-quadrupole (E2) and magnetic-dipole (M1), must be considered when characterizing the lattice light shift. However, inconsistent values have been reported for the E2-M1 difference of the clock states in strontium, which greatly limits the ability to operate strontium clocks with uncertainties below a few 10(-18). A recent measurement using the Sr-87 lattice clock found that the E2-M1 light shift coefficient is in good agreement with previous studies.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Astronomy & Astrophysics
Kaitlyn Szekerczes, Scott Noble, Cecilia Chirenti, James Ira Thorpe
Summary: Modern astronomers have access to all-sky images from various regions of the electromagnetic spectrum and have recently added gravitational waves as a non-electromagnetic messenger to their toolkit. Although all identified gravitational wave sources have been extra-Galactic and transient, the Milky Way has a population of ultracompact binaries that emit persistent gravitational waves. Space-based detectors will measure this population and provide information about their location and properties. This study demonstrates how this data can be used to create false-color images of the Galaxy that represent the intensity and frequency of gravitational waves.
ASTRONOMICAL JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
J. C. G. Henriques, N. A. Mortensen, N. M. R. Peres
Summary: We present an analytical expression for the linewidth of the 1s exciton in transition metal dichalcogenides as a function of temperature, with the total linewidth being dominated by contributions from radiative decay, phonon-induced intravalley scattering, and phonon-induced intervalley scattering. By using a variational Ansatz to solve the Wannier equation, we are able to analytically study the excitonic problem and decay dynamics, with results showing good agreement with experimental data and potential applications for predicting linewidth values at different temperatures in excitonic two-dimensional materials.
Article
Physics, Multidisciplinary
A. Cipris, N. A. Moreira, T. S. do Espirito Santo, P. Weiss, C. J. Villas-Boas, R. Kaiser, W. Guerin, R. Bachelard
Summary: The study explores subradiance caused by dipole-dipole interactions, where a 200-fold increase in the population of these modes was experimentally demonstrated as the saturation parameter of the driving field is increased. The enhancement in population is attributed to a mechanism similar to optical pumping, while lifetimes are unaffected by pump strength.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Pengcheng Fan, Jixing Zhang, Zhiying Cui, Lixia Xu, Guodong Bian, Mingxin Li, Heng Yuan
Summary: The sensitivity of quantum sensing in metrology and spectroscopy is affected by the resolution of the frequency spectrum, which is hindered by decoherence. A method combining continuous-wave optically detected magnetic resonance (CWODMR) with heterodyne readout was proposed to overcome the limitation of coherence time. It demonstrated that the frequency resolution and precision could be improved proportionally to the low-pass filter parameters, and achieved a sensitivity of 7.32 nT center dot Hz(-1/2)@10 kHz when sensing arbitrary audio signals. This approach can be extended to various fields where high-fidelity detection properties across multiple frequency bands are required in small sensing volumes.
Article
Optics
Lang Li, Tao Wang, Xinhang Li, Peng Huang, Yuyao Guo, Liangjun Lu, Linjie Zhou, Guihua Zeng
Summary: Integrated quantum key distribution (QKD) systems based on photonic chips show promise for building global quantum communications networks. We designed and fabricated two on-chip tunable lasers for continuous-variable QKD (CVQKD) and demonstrated a high-performance system based on these sources. The on-chip lasers provide accurate detection of quantum signals, alignment of nonhomologous lasers, and suppression of excess noise, resulting in a secret key rate of 0.75 Mb/s at a 50 km fiber distance and a secure transmission distance of over 100 km. These results are a breakthrough toward fully integrated CV-QKD and lay the foundation for a reliable and efficient terrestrial quantum-secure metropolitan area network.
PHOTONICS RESEARCH
(2023)
Article
Physics, Multidisciplinary
Matthew N. Winchester, Matthew A. Norcia, Julia R. K. Cline, James K. Thompson
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Multidisciplinary
Matthew A. Norcia, Julia R. K. Cline, John P. Bartolotta, Murray J. Holland, James K. Thompson
NEW JOURNAL OF PHYSICS
(2018)
Article
Multidisciplinary Sciences
Matthew A. Norcia, Robert J. Lewis-Swan, Julia R. K. Cline, Bihui Zhu, Ana M. Rey, James K. Thompson
Article
Physics, Multidisciplinary
Matthew A. Norcia, Julia R. K. Cline, Juan A. Muniz, John M. Robinson, Ross B. Hutson, Akihisa Goban, G. Edward Marti, Jun Ye, James K. Thompson
Article
Physics, Multidisciplinary
Robert J. Lewis-Swan, Matthew A. Norcia, Julia R. K. Cline, James K. Thompson, Ana Maria Rey
PHYSICAL REVIEW LETTERS
(2018)
Article
Multidisciplinary Sciences
Juan A. Muniz, Diego Barberena, Robert J. Lewis-Swan, Dylan J. Young, Julia R. K. Cline, Ana Maria Rey, James K. Thompson
Article
Physics, Multidisciplinary
Robert J. Lewis-Swan, Diego Barberena, Juan A. Muniz, Julia R. K. Cline, Dylan Young, James K. Thompson, Ana Maria Rey
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Multidisciplinary
Robert J. Lewis-Swan, Diego Barberena, Julia R. K. Cline, Dylan J. Young, James K. Thompson, Ana Maria Rey
Summary: The proposal suggests simulating dynamical phases of a BCS superconductor using cold atoms trapped in an optical cavity, with effective Cooper pairs encoded via internal states of the atoms and attractive interactions realized through the exchange of virtual photons. By controlling the interaction strength and dispersion relation of the effective Cooper pairs, exploration of the full dynamical phase diagram of the BCS model is enabled. This proposal opens the door for studying the nonequilibrium features of quantum magnetism and superconductivity through atom-light interactions in cold atomic gases.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Juan A. Muniz, Dylan J. Young, Julia R. K. Cline, James K. Thompson
Summary: The study demonstrates the direct quantum nondemolition detection of millihertz linewidth optical atomic transition and determines the natural linewidth of an ultranarrow transition in Sr-87. This provides crucial information for the performance of atomic clocks and opens up possibilities for continuous frequency measurements and laser stabilization.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Optics
John P. Bartolotta, Matthew A. Norcia, Julia R. K. Cline, James K. Thompson, Murray J. Holland
Article
Optics
Matthew A. Norcia, Julia R. K. Cline, James K. Thompson