Papers
Live trends in quantum computing research, updated daily from arXiv.
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Reinforcement Learning to Disentangle Multiqubit Quantum States from Partial Observations
Pavel Tashev, Stefan Petrov, Friederike Metz +1 more·Jun 12, 2024
Using partial knowledge of a quantum state to control multiqubit entanglement is a largely unexplored paradigm in the emerging field of quantum interactive dynamics with the potential to address outstanding challenges in quantum state preparation and...
Improved criteria of detecting multipartite entanglement structure
Kai Wu, Zhihua Chen, Zhen-Peng Xu +2 more·Jun 11, 2024
Multipartite entanglement is one of the crucial resources in quantum information processing tasks such as quantum metrology, quantum computing and quantum communications. It is essential to verify not only the multipartite entanglement, but also the ...
Quantum sparse coding and decoding based on quantum network
Xun Ji, Qin Liu, Shan Huang +2 more·Jun 10, 2024
Sparse coding provides a versatile framework for efficiently capturing and representing crucial data (information) concisely, which plays an essential role in various computer science fields, including data compression, feature extraction, and genera...
Reliable Quantum Memories with Unreliable Components
A. K. Nayak, Eric Chitambar, L. Varshney·Jun 8, 2024
Quantum memory systems are vital in quantum information processing for dependable storage and retrieval of quantum states. Inspired by classical reliability theories that synthesize reliable computing systems from unreliable components, we formalize ...
Bipartite reweight-annealing algorithm of quantum Monte Carlo to extract large-scale data of entanglement entropy and its derivative
Zhe Wang, Zhiyan Wang, Yi-Ming Ding +2 more·Jun 8, 2024
Entanglement entropy (EE) plays a central role in the intersection of quantum information science and condensed matter physics. However, scanning the EE for two-dimensional and higher-dimensional systems still remains challenging. To address this cha...
Slow and stored light via electromagnetically induced transparency using a Λ -type superconducting artificial atom
Kai-I Chu, Xiao-Cheng Lu, K-H Chiang +5 more·Jun 7, 2024
Recent progresses in Josephson-junction-based superconducting circuits have propelled quantum information processing forward. However, the lack of a metastable state in most superconducting artificial atoms hinders the development of photonic quantum...
Entanglement with neutral atoms in the simulation of nonequilibrium dynamics of one-dimensional spin models
Anupam Mitra·Jun 7, 2024
Quantum entanglement is a key ingredient for quantum information processing with capabilities beyond that of classical computation. We study the generation and role of entanglement in the dynamics of spin-1/2 models, both for the design of quantum ga...
Quantum Nuclear Dynamics on a Distributed Set of Ion-Trap Quantum Computing Systems.
Anurag Dwivedi, A. Rasmusson, Philip Richerme +1 more·Jun 7, 2024
Quantum nuclear dynamics with wavepacket time evolution is classically intractable and viewed as a promising avenue for quantum information processing. Here, we use IonQ, Inc.'s 11-qubit trapped-ion quantum computer, Harmony, to study the quantum wav...
High-Fidelity Electron Spin Gates for Scaling Diamond Quantum Registers
T. Joas, F. Ferlemann, Roberto Sailer +9 more·Jun 6, 2024
Diamond is a promising platform for quantum information processing as it can host highly coherent qubits that could allow for the construction of large quantum registers. A prerequisite for such devices is a coherent interaction between nitrogen-vaca...
Circuit-level fault tolerance of cat codes
Long D. H. My, Shu-Fen Qin, Hui Khoon Ng·Jun 6, 2024
Bosonic codes encode quantum information into a single infinite-dimensional physical system endowed with error correction capabilities. This reduces the need for complex management of many physical constituents compared with standard approaches emplo...
A quantum neural network-based approach to power quality disturbances detection and recognition
Guo-Dong Li, Haibin He, Yue Li +4 more·Jun 5, 2024
As an emerging technology force, quantum algorithms have shown great potential and unique advantages in many fields of application. Power quality disturbances (PQDs) affect the security and stability of the power system, which may lead to equipment d...
Optimization of Decoder Priors for Accurate Quantum Error Correction.
V. Sivak, M. Newman, P. Klimov·Jun 4, 2024
Accurate decoding of quantum error-correcting codes is a crucial ingredient in protecting quantum information from decoherence. It requires characterizing the error channels corrupting the logical quantum state and providing this information as a pri...
Demonstration of Erasure Conversion in a Molecular Tweezer Array
Connor M. Holland, Yukai Lu, Samuel J. Li +2 more·Jun 4, 2024
Programmable optical tweezer arrays of molecules are an emerging platform for quantum simulation and quantum information science. For these applications, reducing and mitigating errors that arise during initial state preparation and subsequent evolut...
Entangling Four Logical Qubits beyond Break-Even in a Nonlocal Code.
Yifan Hong, Elijah Durso-Sabina, D. Hayes +1 more·Jun 4, 2024
Quantum error correction protects logical quantum information against environmental decoherence by encoding logical qubits into entangled states of physical qubits. One of the most important near-term challenges in building a scalable quantum compute...
Noise-adapted qudit codes for amplitude-damping noise
Sourav Dutta, Debjyoti Biswas, Prabha Mandayam·Jun 4, 2024
Quantum error correction (QEC) plays a critical role in preventing information loss in quantum systems and provides a framework for reliable quantum computation. Identifying quantum codes with nice code parameters for physically motivated noise model...
Generalized Cycle Benchmarking Algorithm for Characterizing Midcircuit Measurements
Zhihan Zhang, Senrui Chen, Yunchao Liu +1 more·Jun 4, 2024
Midcircuit measurements (MCMs) are crucial ingredients in the development of fault-tolerant quantum computation. While there have been rapid experimental progresses in realizing MCMs, a systematic method for characterizing noisy MCMs is still under e...
Emergence of the Wavefunction of a Non-relativistic Quantum Particle from QFT
Mani L. Bhaumik·Jun 4, 2024
The enormous success of the Standard Model of particle physics has clearly established quantum fields as the fundamental elements of reality of the universe unveiled to us so far. Here we present for the first time a thorough derivation of the wavefu...
Entanglement accelerates quantum simulation
Qi Zhao, You Zhou, Andrew M. Childs·Jun 4, 2024
Quantum entanglement is an essential feature of many-body systems that impacts both quantum information processing and fundamental physics. Classical simulation methods can efficiently simulate many-body states with low entanglement, but struggle as ...
Resource-theoretic hierarchy of contextuality for general probabilistic theories
Lorenzo Catani, Thomas D. Galley, Tomáš Gonda·Jun 2, 2024
In this work we present a hierarchy of generalized contextuality. It refines the traditional binary distinction between contextual and noncontextual theories, and facilitates their comparison based on how contextual they are. Our approach focuses on ...
A Novel Quantum-Classical Hybrid Algorithm for Determining Eigenstate Energies in Quantum Systems
Qing-Xing Xie, Yan Zhao·Jun 1, 2024
Developing efficient quantum computing algorithms is essential for tackling computationally challenging problems across various fields. This paper presents a novel quantum algorithm, XZ24, for efficiently computing the eigen-energy spectra of arbitra...