Article
Quantum Science & Technology
Burhan Gulbahar
Summary: This article proposes a method for privacy-preserving quantum state tomography in a multi-party setting. The method uses an encrypted QST algorithm and concepts from quantum machine learning to protect the privacy of the source. Experimental implementations and supporting evidences are provided for future applications.
QUANTUM INFORMATION PROCESSING
(2023)
Article
Multidisciplinary Sciences
A. Kozubov, A. A. Gaidash, A. D. Kiselev, G. P. Miroshnichenko
Summary: The paper presents an approach to complete Bell state analysis based on filtering mapping which avoids complications related to hyperentanglement or representation of Bell states as concatenated Greenber-Horne-Zeilinger (C-GHZ) state. The technique involves two-step algorithms with non-demolition and semi-demolition filtrations, using cross-Kerr nonlinearity and discrete photodetection for measurement.
SCIENTIFIC REPORTS
(2021)
Article
Physics, Applied
Kimin Park, Changhun Oh, Radim Filip, Petr Marek
Summary: This study discovers that the same estimation results of quantum probes using entangled or quantum non-Gaussian states can be achieved in a significantly more feasible manner by employing independent sets of differently squeezed Gaussian states that are classically correlated with position or momentum measurements.
PHYSICAL REVIEW APPLIED
(2022)
Article
Optics
Xiaozhen Ge, Lijun Liu, Shuming Cheng
Summary: In this work, we investigate a method to quantify the global property of multipartite quantum systems. We propose a new measurement called concurrence fill, which provides a geometric interpretation for measuring genuine tripartite entanglement. Our results show that concurrence fill can increase under local operations and classical communication, indicating it is not an entanglement monotone. We also introduce a reliable monotone to quantify genuine tripartite entanglement and generalize it to multipartite systems.
Article
Physics, Multidisciplinary
Laura Clinton, Johannes Bausch, Joel Klassen, Toby Cubitt
Summary: We investigate a binned version of quantum phase estimation (QPE), known as the quantum eigenvalue estimation problem (QEEP), and determine if our circuit decomposition techniques can improve its performance in the noisy intermediate scale quantum (NISQ) regime. We find that our techniques significantly reduce the threshold for performing the minimum two-bin instance of this algorithm. We also propose a modified protocol called randomized quantum eigenvalue estimation problem (rQEEP) which outputs estimates on the fraction of eigenvalues within randomly chosen bins.
NEW JOURNAL OF PHYSICS
(2023)
Article
Automation & Control Systems
Ming Lin, Yan-Ni Zeng, Hui Chen, Chang Liu, Hongxia Rao
Summary: This paper investigates reliable mixed H2/H infinity distributed state estimation for periodic nonlinear systems using a sensor network with time-varying topology described by a period index dependent Markov chain. A distributed state estimator is designed based on local and neighbors' innovation information, while considering non-fragile estimator to improve robustness. Sufficient conditions for stochastic stability and mixed H2/H infinity performance are derived, and the expected estimator gains are solved based on these conditions. The proposed state estimation method is validated through numerical example and comparative experiments.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2023)
Article
Physics, Multidisciplinary
Daniel Uzcategui Contreras, Gabriel Senno, Dardo Goyeneche
Summary: We propose an iterative method to solve the multipartite quantum state estimation problem, demonstrating convergence for any information complete set of generalized quantum measurements in any finite dimension. The method shows fast convergence in high dimensions and strong robustness in the presence of realistic errors, with convergence in a single iteration for mutually unbiased bases and tensor product of generalized Pauli observables.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2021)
Article
History & Philosophy Of Science
C. de Ronde, H. Freytes, G. Sergioli
Summary: This paper examines the concept of quantum probability within quantum computation and logic, discussing both subjectivist and objectivist interpretations. It proposes an objectivist interpretation based on the idea that the Born rule provides information about an intensive realm of reality, and explores the implications for modeling and development in quantum computation and quantum computational logic.
Article
Computer Science, Hardware & Architecture
Pengcheng Zhu, Shiguang Feng, Zhijin Guan
Summary: The qubit mapping approach transforms a quantum logical circuit into a physical one that satisfies connectivity constraints. This study proposes an iterated local search framework and a heuristic circuit mapper, which reduce the number of additional gates effectively.
IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS
(2022)
Article
Physics, Multidisciplinary
Kai Yu, Chun-Hui Zhang, Xing-Yu Zhou, Qin Wang
Summary: This paper presents the principle of using passive decoy-state method in quantum key distribution and introduces a novel method. By using two local detectors to generate more detection events, the channel parameters can be estimated more accurately. The study also considers the effect of detector mismatch and finite size on QKD performance.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2022)
Review
Quantum Science & Technology
Xiao-Doug Yu, Jiangwei Shang, Otfried Guehne
Summary: This article reviews the recent progress in the efficient and reliable certification of quantum states. It explains how the verification and fidelity estimation of a quantum state can be discussed using hypothesis testing. It also provides detailed explanations of various strategies for verifying entangled states using local measurements or measurements assisted by local operations and classical communication. Furthermore, it discusses extensions of the problem, such as the certification of quantum channels and the verification of entanglement.
ADVANCED QUANTUM TECHNOLOGIES
(2022)
Article
Quantum Science & Technology
D. Tielas, M. Losada, L. Rebon, F. Holik
Summary: This paper investigates the performance of the maximum entropy method in quantum state estimation, particularly when prior information about symmetries is available. Through numerical simulations and considering experimental noise, it is found that this method can effectively reduce the number of independent measurements needed and exhibits robustness in practical scenarios.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Wei Yang, Shi-Bin Fu, Yong Lu, Kuang-Yi Zhang, Jin-Mei Liu, Hao-Ran Gao, Xiao-Hui Wang, Ping Zhang
Summary: In this paper, the response of Raman-active modes in monolayer 1T'-WTe2 to charge doping is investigated using first-principles calculation. It is found that most Raman modes are blueshifted when doped with electrons and redshifted when doped with holes. Additionally, the frequency of A2g, A3g, and B3g modes decrease with increasing carrier concentration, while A3g and A6g modes show frequency changes with multiple turning points.
Article
Physics, Multidisciplinary
Libor Motka, Martin Paur, Jaroslav Rehacek, Zdenek Hradil, Luis L. Sanchez-Soto
Summary: The study shows that quantum state tomography with perfect knowledge of the measurement apparatus can be inferior to strategies that discard information about the measurement, particularly in scenarios with minimal informationally complete measurement settings. In these cases, the trade-off between larger uncertainty about the measurement and smaller uncertainty about the reconstructed signal is more pronounced.
NEW JOURNAL OF PHYSICS
(2021)
Article
Optics
Javier Martinez-Cifuentes, K. M. Fonseca-Romero
Summary: The study presents a spin state estimation scheme using a modified setup of the Stern-Gerlach experiment, requiring a suitable initial spatial state. Statistical characterization of the estimators allows for associating errors with estimated parameters and defining a measure for comparing estimation procedures across different Stern-Gerlach setups.
Article
Optics
Michal Jachura, Jan Szczepanek, Wojciech Wasilewski, Michal Karpinski
JOURNAL OF MODERN OPTICS
(2018)
Article
Optics
P. S. Michelberger, M. Karpinski, I. A. Walmsley, J. Nunn
JOURNAL OF MODERN OPTICS
(2018)
Article
Physics, Multidisciplinary
Alex O. C. Davis, Valerian Thiel, Michal Karpinski, Brian J. Smith
PHYSICAL REVIEW LETTERS
(2018)
News Item
Optics
Michal Karpinski
Article
Physics, Applied
F. Sosnicki, M. Mikolajczyk, A. Golestani, M. Karpinski
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Applied
T. Hiemstra, T. F. Parker, P. Humphreys, J. Tiedau, M. Beck, M. Karpinski, B. J. Smith, A. Eckstein, W. S. Kolthammer, I. A. Walmsley
PHYSICAL REVIEW APPLIED
(2020)
Article
Chemistry, Analytical
Rohan Soman, Kaleeswaran Balasubramaniam, Ali Golestani, Michal Karpnski, Pawel Malinowski
Article
Instruments & Instrumentation
Rohan Soman, Kaleeswaran Balasubramaniam, Ali Golestani, Michal Karpinski, Pawel Malinowski, Wieslaw Ostachowicz
Summary: Structural health monitoring (SHM) systems have the potential to reduce lifecycle costs of structures, with guided waves (GW) based techniques identified as the most promising for SHM.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Physics, Multidisciplinary
Ali Golestani, Alex O. C. Davis, Filip Sosnicki, Michal Mikolajczyk, Nicolas Treps, Michal Karpinski
Summary: This article introduces a new technique called Fourier transform chronometry, which acquires the temporal envelope of ultrashort optical pulses by measuring the frequency autocorrelation of the optical field. Experimental results show that this technique can successfully measure the pulse envelope of classical and single-photon light pulses.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Filip Sosnicki, Michal Mikolajczyk, Ali Golestani, Michal Karpinski
Summary: A Fresnel time lens is developed to bridge the gap between ultrafast and slow quantum information processing systems. It compresses the single-photon spectral bandwidth from picosecond to nanosecond timescales. This development enables the integration of different quantum information processing platforms and facilitates large-scale hybrid quantum information processing.
Article
Engineering, Electrical & Electronic
Adam Widomski, Stanislaw Stopinski, Krzysztof Anders, Ryszard Piramidowicz, Michal Karpinski
Summary: In this paper, we present a indium phosphide-based photonic integrated circuit that allows accurate control of the temporal and spectral profiles of optical pulses generated at the telecom wavelengths. The device enables simultaneous temporally and spectrally resolved measurements using single photon counting and has applications in multidimensional time-frequency quantum key distribution.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Proceedings Paper
Engineering, Biomedical
Rohan N. Soman, Ali Golestani, Kaleeswaran Balasubramaniam, Michal Karpinski, Pawel H. Malinowski, Wieslaw Ostachowicz
Summary: This paper investigates the application of ellipse and hyperbola based techniques for FBG sensor networks, addressing specific challenges and providing comparative assessment using experimental data.
HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS XV
(2021)
Review
Quantum Science & Technology
Michal Karpinski, Alex O. C. Davis, Filip Sosnicki, Valerian Thiel, Brian J. Smith
Summary: This article reviews methods for controlling and measuring quantum light pulses based on the deterministic application of targeted phases in the time and frequency domains. It also showcases recent demonstrations of quantum applications.
ADVANCED QUANTUM TECHNOLOGIES
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
F. Sosnicki, M. Mikolajczyk, A. Golestani, A. Widomski, M. Karphiski
2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2020)
Article
Optics
Dashiell L. P. Vitullo, M. G. Raymer, B. J. Smith, Michal Karpinski, L. Mejling, K. Rottwitt