Article
Materials Science, Multidisciplinary
Meiyu Wang, Yuhong Zheng, Liangxue Fu, Fengli Yan, Ting Gao
Summary: A technique for remotely preparing an arbitrary single-photon hybrid state between two distant nodes using hyper-entangled state in polarization and time-bin degrees of freedom is presented. The sender performs unitary operations on her photon and target state is reconstructed at the remote receiver's quantum system through single-photon projective measurement and classical communication. The study discusses remote state preparation via partially hyper-entangled state and aims to pave the way towards long-distance quantum communication scenarios.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Jinyong Ma, Jihua Zhang, Yuxin Jiang, Tongmiao Fan, Matthew Parry, Dragomir N. Neshev, Andrey A. Sukhorukov
Summary: We propose and demonstrate the preparation of desired two-photon polarization states using a nonlinear metasurface incorporating multiplexed silica metagratings on a lithium niobate film. The two-photon polarization states can be shaped by adjusting the metagrating orientation, and by combining multiple metagratings, arbitrary polarization-entangled qutrit states can be generated. This enables the miniaturization of optically controlled quantum devices using ultrathin metasurfaces as polarization-entangled photon sources.
Article
Chemistry, Multidisciplinary
Jinyong Ma, Jihua Zhang, Yuxin Jiang, Tongmiao Fan, Matthew Parry, Dragomir N. Neshev, Andrey A. Sukhorukov
Summary: The use of a nonlinear metasurface and a thin film allows for the flexible manipulation of complex polarization states of photon pairs. It is found that the orientation of the metagratings can shape the polarization states of the photon pairs. Additionally, combining three metagratings enables the generation of arbitrary polarization-entangled qutrit states.
Article
Optics
Qi-Ping Su, Yu Zhang, Liang Bin, Chui-Ping Yang
Summary: Compared with a qubit, a qudit provides a larger Hilbert space for information storage and processing. This work proposes a simple method to realize a hybrid quantum controlled-sum gate using a superconducting qutrit and a cat-state qutrit, forming a universal set of ternary logic gates for quantum computing with qutrits. The proposal is based on circuit QED and employs a dispersive coupling between a superconducting ququart and a microwave cavity. The gate operation is simple and does not require classical pulse or measurement. The feasibility of generating a hybrid maximally entangled state and its experimental implementation are also discussed.
Article
Optics
Dongmei Han, Fengxiao Sun, Na Wang, Yu Xiang, Meihong Wang, Mingsheng Tian, Qiongyi He, Xiaolong Su
Summary: Remote state preparation allows for the preparation and manipulation of quantum state non-locally. This study presents the experimental preparation of optical cat states remotely using a two-mode Gaussian entangled state in a lossy channel. The remote manipulation of the prepared cat state is demonstrated by changing the measurement basis at Alice's station. The results show the potential for remote hybrid quantum information processing.
LASER & PHOTONICS REVIEWS
(2023)
Article
Physics, Multidisciplinary
Mei-Yu Wang, Fengli Yan, Ting Gao
Summary: This study explores remote state preparation (RSP) using hyperentanglement as a shared resource to remotely prepare and reconstruct arbitrary single-photon states in two degrees of freedom. By rotating and performing projective measurements at the sender, the original single-photon state can be remotely reconstructed at the receiver's quantum systems.
FRONTIERS OF PHYSICS
(2021)
Article
Optics
A. Dehghani, B. Mojaveri, A. A. Alenabi
Summary: In this study, a new class of two-mode entangled nonlinear coherent-squeezed states (ENCSS) is proposed by substituting standard coherent states with nonlinear coherent states. Different types of non-linearity functions are employed to investigate the effectiveness of non-linearization of the ECSS. A general analysis of non-classical properties is presented and the entanglement of these states is discussed.
APPLIED PHYSICS B-LASERS AND OPTICS
(2022)
Article
Optics
Bo Wang, Zan Tang, Tian Chen, Xiangdong Zhang
Summary: This paper proposes and experimentally demonstrates an inverse-design scheme for realizing high-fidelity transmission and transformation of entangled states. By utilizing topologically protected channels, the scheme achieves robust transmission and transformation of entangled states and opens up a new avenue for quantum engineering, combining topology, quantum physics, and inverse design.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
S. Francesconi, A. Raymond, R. Duhamel, P. Filloux, A. Lemaitre, P. Milman, M. I. Amanti, F. Baboux, S. Ducci
Summary: We demonstrate a chip-integrated semiconductor source that combines polarization and frequency entanglement, allowing the generation of entangled biphoton states in a hybrid degree of freedom without post-manipulation. The device is based on type-II spontaneous parametric downconversion in a counterpropagating phasematching scheme, enabling the direct generation of polarization-frequency entangled photons at room temperature and telecom wavelength. The state entanglement is quantified by a combined measurement of the joint spectrum and Hong-Ou-Mandel interference.
PHOTONICS RESEARCH
(2023)
Article
Quantum Science & Technology
David Drahi, Demid Sychev, Khurram K. Pirov, Ekaterina A. Sazhina, Valeriy A. Novikov, Ian A. Walmsley, A. Lvovsky
Summary: This paper focuses on the interconversion between the dual-rail and single-rail encodings of quantum information in optical qubits. The study demonstrates the necessity of completing the conversion between the three primary encodings of a qubit in the optical field to achieve cohesive quantum networks.
Article
Multidisciplinary Sciences
Philip Thomas, Leonardo Ruscio, Olivier Morin, Gerhard Rempe
Summary: This article introduces a deterministic protocol for creating photonic entanglement with a single memory atom in a cavity. By interleaving controlled single-photon emissions with tailored atomic qubit rotations, it is possible to efficiently grow multi-photon GHZ states and linear cluster states.
Article
Nanoscience & Nanotechnology
Xujie Wang, Zhenlong Dou, Chi Zhang, FangFang Deng, XiaoLin Lu, ShuangShuang Wang, Li Zhou, Tao Ding
Summary: Anisotropy is important in various material systems, but creating and controlling it has been a challenge. Polarization-addressed anisotropy is attractive due to its controllability, simplicity, and accuracy, but only a few material systems can achieve it. In this study, a polarization-dependent anisotropic etching system made of Au@oligomer core-shell nanoparticles was established. The etching process is faster along the polarization direction, resulting in shape anisotropy of the particles. This system has advantages of high selectivity, controllability, and versatility, opening up new possibilities for on-chip nanofabrication.
Article
Optics
Xing-Xiang Peng, Wen-Hao Zhang, Peng Yin, Gong-Chu Li, Lei Chen, Geng Chen, Chuan-Feng Li, Guang-Can Guo
Summary: In this paper, a protocol is proposed for secure remote sensing. By encoding the sensing information into entangled states, the local client can accurately estimate the parameter range, while preventing malicious eavesdroppers from accessing the information or deceiving the client. The application of this protocol in a magnetic sensing scenario demonstrates the client's ability to accurately estimate the strength range of the magnetic field, which is relevant to discovering mineral resources.
Article
Optics
Emma Brambila, Rodrigo Gomez, Riza Fazili, Markus Graefe, Fabian Steinlechner
Summary: The distribution of entanglement via satellite links will greatly expand the coverage of quantum networks. An ultrabright entangled photon source optimized for long-distance free-space transmission is reported. The source operates in a wavelength range efficiently detected with space-ready single photon avalanche diodes (Si-SPADs), and provides pair emission rates that exceed the detector bandwidth. By demultiplexing the photon flux into wavelength channels using spectral correlations due to hyper-entanglement, the limitation of detector bandwidth can be overcome. These results, combined with recent demonstrations of space-proof source prototypes, pave the way for a broadband long-distance entanglement distribution network based on satellites.
Article
Optics
Naoto Aizawa, Kazuya Niizeki, Riku Sasaki, Tomoyuki Horikiri
Summary: In this paper, a Sagnac-type spontaneous parametric down conversion system using a Fresnel rhomb as a wideband and reasonable retarder is proposed. It enables the generation of highly nondegenerate two-photon entanglement comprising the telecommunication wavelength and quantum memory wavelength. Quantum state tomography is performed to evaluate the degree of entanglement, and a fidelity of up to 94.4% with a Bell state |40+) is obtained. Therefore, this paper demonstrates the potential of nondegenerate EPSs compatible with both telecommunication wavelength and quantum-memory wavelength in quantum repeater architecture.
Article
Physics, Multidisciplinary
Nicholas Pomata, Tzu-Chieh Wei
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Nuclear
Sau Lan Wu, Jay Chan, Wen Guan, Shaojun Sun, Alex Wang, Chen Zhou, Miron Livny, Federico Carminati, Alberto Di Meglio, Andy C. Y. Li, Joseph Lykken, Panagiotis Spentzouris, Samuel Yen-Chi Chen, Shinjae Yoo, Tzu-Chieh Wei
Summary: This study demonstrates the potential of quantum machine learning in differentiating between signal and background in realistic physics datasets, with promising results obtained on both quantum simulator and hardware. The use of quantum machine learning in future high-luminosity LHC physics analyses, including Higgs boson self-couplings measurements and dark matter searches, is foreseen.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2021)
Article
Physics, Multidisciplinary
Paul Lauria, Wei-Ting Kuo, Nigel R. Cooper, Julio T. Barreiro
Summary: We have experimentally created a spin-momentum lattice using a trapped Fermi gas. This lattice, formed by cyclically rotated atom-laser couplings between three atomic spin states, creates a triangular lattice in a synthetic spin-momentum space. By demonstrating and studying this lattice's dynamics with spin- and momentum-resolved absorption imaging, new possibilities for synthetic spin systems and engineering topological bands are opened up.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Yabo Li, Dominik Schneble, Tzu-Chieh Wei
Summary: We investigate dynamically coupled one-dimensional Bose-Hubbard models and solve for the wave functions and energies of two-particle eigenstates. Our study reveals the existence of four different continua and three doublon dispersions in the two-particle spectrum of a system with generic interactions. The presence of doublons and their energies depend on the coupling strength between two species of bosons and the interaction strengths. We provide details on the spectrum and properties of two-particle states, and analyze the difference in time evolution under different coupling strengths and the relation between the long-time behavior of the system and the doublon dispersion. These dynamics can be observed in cold atoms and potentially simulated by digital quantum computers.
Article
Materials Science, Multidisciplinary
Yanzhu Chen, Sheng-Jie Huang, Yi-Ting Hsu, Tzu-Chieh Wei
Summary: This study systematically obtains topological invariants for two-dimensional time-reversal symmetric superconductors with twofold rotational symmetry C2. It proposes four Z2 invariants to predict Majorana boundary types and demonstrates their effectiveness.
Article
Optics
Mark Hillery, Janos A. Bergou, Tzu-Chieh Wei, Siddhartha Santra, Vladimir Malinovsky
Summary: The paper discusses a remote state preparation protocol that can send a qubit state confined to the equator of the Bloch sphere to an arbitrary number of receivers, with lower entanglement cost compared to teleportation. Variations on this task are also presented, including probabilistically sending an unknown qubit state to two receivers, sending different qubit states to two receivers, and sending qutrit states to two receivers. Applications of these protocols are also discussed.
Article
Physics, Multidisciplinary
Samuel Yen-Chi Chen, Tzu-Chieh Wei, Chao Zhang, Haiwang Yu, Shinjae Yoo
Summary: This paper presents a quantum convolutional neural network (QCNN) for the classification of high energy physics events. The proposed model demonstrates the advantage of learning faster and achieving greater test accuracy compared to classical convolutional neural networks (CNNs) under a similar number of parameters. Based on numerical simulations, it is promising to apply QCNN and other quantum machine learning models to high energy physics and other scientific fields.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Optics
Grady Kestler, Khang Ton, Dmytro Filin, Marianna S. Safronova, Julio T. Barreiro
Summary: Accurate prediction of magic wavelengths requires precise knowledge of electric dipole matrix elements of atomic transitions. In this study, a magic wavelength near 473 nm for the 5s2 1S0 -5s5p 3P1 intercombination transition of 88Sr was calculated and measured, showing good agreement with theoretical calculations.
Article
Physics, Multidisciplinary
Sau Lan Wu, Shaojun Sun, Wen Guan, Chen Zhou, Jay Chan, Chi Lung Cheng, Tuan Pham, Yan Qian, Alex Zeng Wang, Rui Zhang, Miron Livny, Jennifer Glick, Panagiotis Kl Barkoutsos, Stefan Woerner, Ivano Tavernelli, Federico Carminati, Alberto Di Meglio, Andy C. Y. Li, Joseph Lykken, Panagiotis Spentzouris, Samuel Yen-Chi Chen, Shinjae Yoo, Tzu-Chieh Wei
Summary: Quantum machine learning, specifically the QSVM-Kernel method, shows promising results for high energy physics analysis by offering computational speedups and matching the performance of classical methods in different platforms. The application of the QSVM-Kernel method on IBM quantum hardware approaches the performance of a noiseless quantum simulator.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Physics, Multidisciplinary
Nhat A. Nghiem, Samuel Yen-Chi Chen, Tzu-Chieh Wei
Summary: Quantum machine learning is an emerging field that combines machine learning with quantum technologies, with a framework that maps data to separate locations in Hilbert space for supervised learning. The framework includes explicit and implicit methods, providing a unified approach for quantum classification. The utility and performance of the framework is demonstrated through noise-free and noisy numerical simulations, as well as classification testing on IBM Q devices.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Physics, Multidisciplinary
Wenhan Guo, Nicholas Pomata, Tzu-Chieh Wei
Summary: This paper reports the existence of nontrivial AKLT models with non-zero spectral gaps on certain planar lattices, showing their characteristics and proof methods, while discussing some attempts to investigate the existence of spectral gaps.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Physics, Multidisciplinary
Hongye Yu, Tzu-Chieh Wei
Summary: The study proposes using a quantum adiabatic and simulated-annealing framework to compute the ground state of small molecules, but it also faces issues of degeneracy and energy-level crossings which are mitigated by a Zeno method. Additionally, the approach can obtain low lying excited states.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Physics, Multidisciplinary
Jielin Wang, Wanzhou Zhang, Tian Hua, Tzu-Chieh Wei
Summary: This paper explores the application of machine learning methods in identifying topological orders and studying phase transitions. It introduces the use of the Calinski-Harabaz index to determine critical points in various statistical models, including those with BKT phase transitions, with promising results for both topological and nontopological phase transitions.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Optics
Yanzhu Chen, Tzu-Chieh Wei
Article
Optics
Yanzhu Chen, Maziar Farahzad, Shinjae Yoo, Tzu-Chieh Wei
