Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Two-detector reconstruction of multiphoton states in linear optical networks
Tudor-Alexandru Isdrailva, Jun-Yi Wu·Dec 5, 2024
We propose a method for partial state reconstruction of multiphoton states in multimode ($N$-photon $M$-mode) linear optical networks (LONs) employing only two bucket photon-number-resolving (PNR) detectors. The reconstructed Heisenberg-Weyl-reduced ...
Double-Bracket Quantum Algorithms for Quantum Imaginary-Time Evolution.
M. Gluza, Jeongrak Son, Bi Hong Tiang +3 more·Dec 5, 2024
Efficiently preparing approximate ground states of large, strongly correlated systems on quantum hardware is challenging, and yet, nature is innately adept at this. This has motivated the study of thermodynamically inspired approaches to ground-state...
Engineering qubit dynamics in open systems with photonic synthetic lattices
Francesco Di Colandrea, Tareq Jaouni, J. Grace +4 more·Dec 5, 2024
The evolution of a quantum system interacting with an environment can be described as a unitary process acting on both the system and the environment. In this framework, the system's evolution can be predicted by tracing out the environmental degrees...
Free-space model for a balloon-based quantum network
Ilektra Karakosta-Amarantidou, Raja Yehia, Matteo Schiavon·Dec 4, 2024
Long-distance communication is one of the main bottlenecks in the development of quantum communication networks. Free-space communication is a way to circumvent exponential fiber loss and to allow longer communication distances. Satellite nodes are t...
Impact of dephased entangled states and varying measurement orientations on the reliability of cryptographic keys generated via the quantum protocol E91: A quantum simulation approach
Adri'an F. Hern'andez-Borda, Mar'ia P. Rojas-Sep'ulveda, Hanz Y. Ram'irez-G'omez·Dec 4, 2024
One of the main requirements to achieve reliable quantum communications are on-demand sources of highly entangled photon pairs, and semiconductor quantum dots have emerged as prominent candidates to satisfy the necessary conditions of brightness and ...
Single photonic qutrit in a collective Rydberg polariton
Y. Jiao, Oliver D. W. Hughes, Max Z. Festenstein +5 more·Dec 4, 2024
Qutrit with highly efficient algorithms and security is imperative in quantum information processing. Here, we demonstrate for the first time the coherent creation, control, and readout of a single photonic qutrit in a cold Rydberg ensemble. In each ...
BOSS: Blocking algorithm for optimizing shuttling scheduling in Ion Trap
Xian Wu, Chenghong Zhu, Jingbo Wang +1 more·Dec 4, 2024
Ion traps stand at the forefront of quantum hardware technology, presenting unparalleled benefits for quantum computing, such as high-fidelity gates, extensive connectivity, and prolonged coherence times. In this context, we explore the critical role...
Ground State Energy Estimation on Current Quantum Hardware Through The Variational Quantum Eigensolver: A Comprehensive Study
N. Belaloui, Abdellah Tounsi, Rabah Abdelmouheymen Khamadja +4 more·Dec 3, 2024
While numerical simulations are presented in most papers introducing new methods to enhance the VQE performance, comprehensive, comparative, and applied studies remain relatively rare. We present a comprehensive, yet concise guide for the implementat...
Sample-based Hamiltonian and Lindbladian simulation: non-asymptotic analysis of sample complexity
Byeong-Yoon Go, Hyukjoon Kwon, Siheon Park +2 more·Dec 3, 2024
Density matrix exponentiation (DME) is a quantum algorithm that processes multiple copies of a program state σ to realize the Hamiltonian evolution e−iσt. Wave matrix Lindbladization (WML) similarly processes multiple copies of a program state ψL in ...
An access model for quantum encoded data
Miguel Murça, Paul K. Faehrmann, Yasser Omar·Dec 2, 2024
We introduce and investigate a data access model (approximate sample and query) that is satisfiable by the preparation and measurement of block encoded states, as well as in contexts such as classical quantum circuit simulation or Pauli sampling. We ...
Enhanced feature encoding and classification on distributed quantum hardware
Roberto Moretti, Andrea Giachero, V. Radescu +1 more·Dec 2, 2024
The steady progress of quantum hardware is motivating the search for novel quantum algorithm optimization strategies for near-term, real-world applications. In this study, we propose a novel feature map optimization strategy for quantum support vecto...
Implementing semiclassical Szegedy walks in classical-quantum circuits for homomorphic encryption
S. A. Ortega, Pablo Fernández, M. Martin-Delgado·Dec 2, 2024
As cloud services continue to expand, the security of private data stored and processed in these environments has become paramount. This work delves into quantum homomorphic encryption (QHE), an emerging technology that facilitates secure computation...
Simultaneously optimizing symmetry shifts and tensor factorizations for cost-efficient Fault-Tolerant Quantum Simulations of electronic Hamiltonians
Konrad Deka, Emil Zak·Dec 2, 2024
In fault-tolerant quantum computing, the cost of calculating Hamiltonian eigenvalues using the quantum phase estimation algorithm is proportional to the constant scaling the Hamiltonian matrix block-encoded in a unitary circuit. We present a method t...
Quantum simulation of the phase transition of the massive Thirring model
Jia-Qi Gong, Ji-Chong Yang·Dec 1, 2024
Recent advancements in quantum computing technology have enabled the study of fermionic systems at finite temperature via quantum simulations. This presents a novel approach to investigating the chiral phase transition in such systems. Among these, t...
Bringing Quantum Systems under Control: A Tutorial Invitation to Quantum Computing and Its Relation to Bilinear Control Systems
Julian Berberich, R. Kosut, Thomas Schulte-Herbrüggen·Dec 1, 2024
Quantum computing comes with the potential to push computational boundaries in various domains including, e.g., cryptography, simulation, optimization, and machine learning. Exploiting the principles of quantum mechanics, new algorithms can be develo...
Ptychographic estimation of pure multiqubit states in a quantum device
Warley M. S. Alves, L. Neves·Dec 1, 2024
Quantum ptychography is a method for estimating an unknown pure quantum state by subjecting it to overlapping projections, each one followed by a projective measurement on a single prescribed basis. Here, we present a comprehensive study of this meth...
Quantum thermalization of Quark-Gluon Plasma
Shile Chen, Li Yan, Shuzhe Shi·Dec 1, 2024
The thermalization of quark gluon plasma created in relativistic heavy-ion collisions is a crucial theoretical question in understanding the onset of hydrodynamics, and in a broad sense, a key step to the exploration of thermalization in isolated qua...
Sphere Packing on a Quantum Computer for Chromatography Modeling
Benjamin Hall, Ian Njoroge, Colin Campbell +4 more·Nov 30, 2024
Column chromatography is an important process in downstream biopharmaceutical manufacturing that enables high-selectivity separation of proteins through various modalities, such as affinity, ion exchange, hydrophobic interactions, or a combination of...
Variational quantum algorithm for non-Markovian quantum dynamics
Peter L. Walters, Mohammad U. Sherazi, Fei Wang·Nov 30, 2024
The simulation of non-Markovian quantum dynamics plays an important role in the understanding of charge and exciton dynamics in the condensed phase environment, and yet it remains computationally expensive on classical computers. We have developed a ...
Controller-decoder system requirements derived by implementing Shor's algorithm with surface code
Yaniv Kurman, Lior Ella, Nir Halay +2 more·Nov 29, 2024
Quantum Error Correction (QEC) is regarded as the most promising path to quantum advantage. The success of QEC relies on achieving quantum gate fidelities below the error threshold of the QEC code, while accurately decoding errors through classical p...