Article
Physics, Multidisciplinary
Chi Zhang, Karan K. Mehta, Jonathan P. Home
Summary: This paper describes the design of a surface-electrode ion trap junction, which is an essential component for large-scale ion trap arrays. The electrodes are designed using a bi-objective optimization method to maintain the total pseudo-potential curvature while minimizing the axial pseudo-potential gradient along the ion transport path. Integrated optics are implemented on each arm of the X-junction trap to facilitate laser beam delivery for parallel operations in multiple trap zones. The layout of the trap chip for commercial foundry fabrication is presented. This work suggests ways to improve ion trap junction performance in scalable implementations and contributes to modular trapped-ion quantum computing in interconnected two-dimensional arrays.
NEW JOURNAL OF PHYSICS
(2022)
Article
Optics
Nikolaos K. Kollas, Dimitris Moustos, Miguel R. Munoz
Summary: Using a nonperturbative approach, this study investigates the interaction between a two-level Unruh-DeWitt detector and a massive scalar field based on an instantaneous interaction. The cohering and decohering power of the quantum evolution channel is derived to examine the field's ability to generate or destroy coherence in the detector. The results reveal previously unobserved effects, such as coherence revival patterns and reduced decoherence in the case of a thermal field with positive mass compared to the massless case. The findings also suggest the possibility of using the theory of massive electromagnetism in the construction of novel applications for quantum technologies, particularly in Proca metamaterials.
Article
Physics, Multidisciplinary
Rathindra Nath Das, Sobhan Kumar Sounda
Summary: This article investigates the interference of multiple single-mode fields on the detection of a single photon. It explores the relationship between the degree of coherence, path indistinguishability, and fringe visibility. The article also discusses how these results relate to Born's rule of interference for multiple sources.
INDIAN JOURNAL OF PHYSICS
(2023)
Article
Chemistry, Physical
Richard Karl, Yanning Yin, Stefan Willitsch
Summary: Hybrid traps, which combine different types of external fields, have become important tools for studying interactions between neutral particles and ions at low temperatures. This study uses molecular-dynamics simulations to investigate the effect of a strongly inhomogeneous magnetic field on the trapping and laser cooling of a single Ca+ ion in a radiofrequency trap. The results show that laser cooling is still effective despite the ion experiencing different magnetic field strengths and directions along its trajectory. Offsettting the centers of the two traps creates a linear magnetic-field gradient, requiring multiple lasers to address the resulting Zeeman splittings for efficient cooling.
Article
Multidisciplinary Sciences
Bernardo Casabone, Chetan Deshmukh, Shuping Liu, Diana Serrano, Alban Ferrier, Thomas Hummer, Philippe Goldner, David Hunger, Hugues de Riedmatten
Summary: This study demonstrates enhancement and dynamic control of Purcell emission from erbium ions doped in nanoparticles within a fiber-based microcavity, showing potential for efficient quantum interfaces and quantum gates between rare-earth ion qubits coupled to an optical cavity.
NATURE COMMUNICATIONS
(2021)
Article
Quantum Science & Technology
Robert Starek, Michal Micuda, Michal Kolar, Radim Filip, Jaromir Fiurasek
Summary: In this study, conditional enhancement of overall coherence of quantum states was investigated through probabilistic quantum operations that utilize a quantum filter diagonal in the basis of incoherent states. Optimal filters were identified to maximize output coherence for a given probability of successful filtering. Through a proof-of-principle experiment with linear optics, the performance of the studied quantum filters was verified and optimal quantum coherence enhancement by quantum filtering was observed.
QUANTUM SCIENCE AND TECHNOLOGY
(2021)
Article
Quantum Science & Technology
Wen-Qiang Liu, Hai-Rui Wei
Summary: This article designs two compact quantum circuits for implementing post-selected controlled-phase-flip (CPF) gate and Toffoli gate with linear optics, assisted by one and two single photons, respectively. The maximum success probability of 1/4 for linear optical CPF gate is achieved by using an ancillary single photon instead of an entangled photon pair or two single photons. Remarkably, the presented Toffoli gate is accomplished with a current maximum success probability of 1/30 and unity fidelity in principle, without using additional entangled photon pairs and the standard decomposition-based approach. Linear optical implementations of the presented two universal gates are feasible and economical under current technology and provide a potential application in large-scale optical quantum computing.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Physics, Multidisciplinary
Adonai R. da Cruz, Michael E. Flatte
Summary: Theoretical calculations predict the anisotropic dissipationless circulating current induced by a spin defect in a two-dimensional electron gas. The shape and spatial extent of these dissipationless circulating currents depend dramatically on the relative strengths of spin-orbit fields with differing spatial symmetry, offering the potential to use an electric gate to manipulate nanoscale magnetic fields and couple magnetic defects. The spatial structure of the magnetic field produced by this current is calculated and provides a direct way to measure the spin-orbit fields of the host, as well as the defect spin orientation, e.g., through scanning nanoscale magnetometry.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Hao-Sheng Zeng, Lian-Jie Wu
Summary: In this study, we investigate the combined effects of Unruh effect and Schwinger effect on quantum correlations. We find that both relativistic effects degrade the initial state's quantum correlations, which are then redistributed among the particles and antiparticles produced by these effects. The different behaviors exhibited by these effects and the conservation of quantum correlation in the process are examined.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Mathematical
Jasvith Raj Basani, Aranya Bhattacherjee
Summary: This paper demonstrates the ability to construct flexible and complex neural networks using quantum computation with optical modes, showcasing that these networks can learn structured classical information. It also illustrates that appropriate photonic hardware can be integrated into existing optical communication systems to meet our information processing needs.
COMMUNICATIONS IN COMPUTATIONAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Alan M. Dibos, Michael T. Solomon, Sean E. Sullivan, Manish K. Singh, Kathryn E. Sautter, Connor P. Horn, Gregory D. Grant, Yulin Lin, Jianguo Wen, F. Joseph Heremans, Supratik Guha, David D. Awschalom
Summary: Researchers have successfully fabricated one-dimensional photonic crystal cavities using erbium-doped titanium dioxide thin films, achieving improvements in photon emission rates and compatibility with silicon technologies.
Article
Computer Science, Interdisciplinary Applications
Nicolas Heurtel, Shane Mansfield, Jean Senellart, Benoit Valiron
Summary: In this paper, an algorithm and general framework for simulating photons passing through linear optical interferometers are provided. The algorithm efficiently computes the probabilities of all possible output states, outperforming the permanent-based method and improving the time complexity for computing the probability of a given output. The algorithm also offers versatility through its use of memorisation and allows for hybrid simulations.
COMPUTER PHYSICS COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Byoung S. Ham
Summary: A novel method of macroscopically entangled light-pair generation using wave nature of photons for coherent field phase control is proposed. The method demonstrates a deterministically controllable nonclassical phenomenon with phase sensitive anticorrelation between input coherent fields.
SCIENTIFIC REPORTS
(2021)
Article
Physics, Multidisciplinary
Nahid Yazdi, Juan Jose Garcia-Ripoll, Diego Porras, Carlos Navarrete-Benlloch
Summary: We demonstrate the dissipative engineering of arbitrary Gaussian states for a set of bosonic modes using lossy multichromatic modulated qubits. Our approach is particularly applicable to superconducting-circuit architectures that have all the necessary experimental ingredients. The generation of such multimode Gaussian states is crucial for various applications, especially in measurement-based quantum computation. We address the challenges of extending previous proposals to many bosonic modes and provide solutions to overcome limitations and hurdles.
NEW JOURNAL OF PHYSICS
(2023)
Article
Optics
Joseph Mays, Greg Gbur
Summary: This passage discusses the phenomenon of superoscillations in partially coherent wavefields, showing that a decrease in spatial coherence can either strengthen or weaken superoscillatory behavior in different cases. The influence of coherence on superoscillations in various model partially coherent fields is considered.
Article
Multidisciplinary Sciences
Thomas Monz, Daniel Nigg, Esteban A. Martinez, Matthias F. Brandl, Philipp Schindler, Richard Rines, Shannon X. Wang, Isaac L. Chuang, Rainer Blatt
Article
Physics, Multidisciplinary
Theodore J. Yoder, Ryuji Takagi, Isaac L. Chuang
Article
Physics, Multidisciplinary
Guang Hao Low, Isaac L. Chuang
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Multidisciplinary
Michael F. O'Keeffe, Lior Horesh, John F. Barry, Danielle A. Braje, Isaac L. Chuang
NEW JOURNAL OF PHYSICS
(2019)
Article
Physics, Multidisciplinary
Tailin Wu, Ian Fischer, Isaac L. Chuang, Max Tegmark
Article
Chemistry, Physical
B. W. Reed, A. A. Moghadam, R. S. Bloom, S. T. Park, A. M. Monterrosa, P. M. Price, C. M. Barr, S. A. Briggs, K. Hattar, J. T. McKeown, D. J. Masiel
STRUCTURAL DYNAMICS-US
(2019)
Article
Physics, Multidisciplinary
Christopher S. Wang, Jacob C. Curtis, Brian J. Lester, Yaxing Zhang, Yvonne Y. Gao, Jessica Freeze, Victor S. Batista, Patrick H. Vaccaro, Isaac L. Chuang, Luigi Frunzio, Liang Jiang, S. M. Girvin, Robert J. Schoelkopf
Article
Physics, Applied
D. T. C. Allcock, W. C. Campbell, J. Chiaverini, I. L. Chuang, E. R. Hudson, I. D. Moore, A. Ransford, C. Roman, J. M. Sage, D. J. Wineland
Summary: This article outlines an alternative approach for flexible encoding capabilities in single-species trapped ion systems using long-lived metastable states as a programmable second species. The additional trapped ion primitives needed for this protocol are compatible with large-scale systems already in operation.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
Andrew K. Tan, Max Tegmark, Isaac L. Chuang
Summary: The trade-off between fidelity and size in lossy compression and clustering is explored, and a mapping of the Pareto frontier that quantifies this trade-off is presented. The optimization of the Deterministic Information Bottleneck (DIB) objective is focused on, and an algorithm is introduced to map out the Pareto frontier. The algorithm shows polynomial scaling and can handle sampling noise. The importance of the algorithm is demonstrated through mapping the DIB frontier in different tasks.
Article
Chemistry, Physical
John M. Martyn, Yuan Liu, Zachary E. Chin, Isaac L. Chuang
Summary: Simulating the unitary dynamics of a quantum system is a fundamental problem in quantum mechanics, and quantum computers have an advantage in simulating electronic dynamics. This paper presents a fully-coherent simulation algorithm based on quantum signal processing, which can efficiently simulate time-dependent quantum systems.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Optics
Zane M. Rossi, Jeffery Yu, Isaac L. Chuang, Sho Sugiura
Summary: This study demonstrates that a quantum advantage can be maintained when distinguishing between two noisy single-qubit rotation channels. A distinct transition between the performance of fully coherent and fully incoherent protocols is observed as a function of noise strength. A hybrid strategy of fully coherent and fully incoherent subroutines is found to be an improved choice in an intermediate regime.
Article
Optics
Yuan Liu, Jasmine Sinanan-Singh, Matthew T. Kearney, Gabriel Mintzer, Isaac L. Chuang
Summary: The paper discusses how a closed multi-dimensional Hilbert space can be constructed from the lowest energy states of a qubit-oscillator system, and how a d-dimensional Hilbert space can be analytically constructed using unitary operations from manipulating standard Jaynes-Cummings Hamiltonian terms. Additionally, it is proven that first-order sideband pulses and carrier pulses form a universal set for quantum operations on the qubit-oscillator qudit.
Article
Quantum Science & Technology
Guang Hao Low, Isaac L. Chuang
Article
Optics
Robert McConnell, Guang Hao Low, Theodore J. Yoder, Colin D. Bruzewicz, Isaac L. Chuang, John Chiaverini, Jeremy M. Sage
Article
Optics
Ryuji Takagi, Theodore J. Yoder, Isaac L. Chuang