Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Compiler for Distributed Quantum Computing: A Reinforcement Learning Approach
Panagiotis Promponas, Akrit Mudvari, Luca Della Chiesa +3 more·Apr 25, 2024
The practical realization of quantum programs that require large-scale qubit systems is hindered by current technological limitations. Distributed Quantum Computing (DQC) presents a viable path to scalability by interconnecting multiple Quantum Proce...
High-Coherence Kerr-Cat Qubit in 2D Architecture
Ahmed Hajr, Bingcheng Qing, Ke Wang +15 more·Apr 25, 2024
The Kerr-cat qubit is a bosonic qubit in which multiphoton Schrödinger cat states are stabilized by applying a two-photon drive to an oscillator with a Kerr nonlinearity. The suppressed bit-flip rate with increasing cat size makes this qubit a promis...
High-fidelity and Fault-tolerant Teleportation of a Logical Qubit using Transversal Gates and Lattice Surgery on a Trapped-ion Quantum Computer
C. Ryan-Anderson, N. Brown, C. Baldwin +21 more·Apr 25, 2024
Quantum state teleportation is commonly used in designs for large-scale fault-tolerant quantum computers. Using Quantinuum's H2 trapped-ion quantum processor, we implement the first demonstration of a fault-tolerant state teleportation circuit for a ...
QREChem: Quantum Resource Estimation Software for Chemistry Applications
Matthew Otten, Byeol Kang, Dmitry Fedorov +4 more·Apr 25, 2024
As quantum hardware continues to improve, more and more application scientists have entered the field of quantum computing. However, even with the rapid improvements in the last few years, quantum devices, especially for quantum chemistry application...
Hierarchically discriminating Haar-randomness in quantum states from a black-box device
Xavier Bonet-Monroig, Hao Wang, Adrián Pérez-Salinas·Apr 24, 2024
The concept of randomness in quantum computing has been central to construct benchmarking tools, cryptographic protocols, as well as a proof of beyond classical computation. Discerning whether quantum states (or unitaries) are randomly distributed is...
Entanglement-Based Artificial Topology: Neighboring Remote Network Nodes
Si-Yi Chen, Jessica Illiano, Angela Sara Cacciapuoti +1 more·Apr 24, 2024
Entanglement is unanimously recognized as the key communication resource of the Quantum Internet. Yet, the possibility of implementing novel network functionalities by exploiting the marvels of entanglement has been poorly investigated so far, by mai...
A robust approach for time-bin encoded photonic quantum information protocols
Simon J. U. White, Emanuele Polino, Farzad Ghafari +6 more·Apr 24, 2024
Quantum states encoded in the time-bin degree of freedom of photons represent a fundamental resource for quantum information protocols. Traditional methods for generating and measuring time-bin encoded quantum states face severe challenges due to opt...
Generation of bipartite mechanical cat state by performing projective Bell state measurement
Roson Nongthombam, Urmimala Dewan, Amarendra K. Sarma·Apr 24, 2024
Quantum state preparation and measurement of photonic and phononic Schrödinger cat states have gathered significant interest due to their implications for alternative encoding schemes in quantum computation. These scheme employ coherent state superpo...
The genuinely multipartite nonlocality of graph states is model-dependent
Xavier Coiteux-Roy, Owidiusz Makuta, Fionnuala Curran +2 more·Apr 24, 2024
Bell's theorem proves that some quantum state correlations can only be explained by bipartite non-classical resources. The notion of genuinely multipartite nonlocality (GMNL) was later introduced to conceptualize the fact that nonclassical resources ...
Minimizing the Number of Teleportations in Distributed Quantum Computing Using Alloy
Ali Ebnenasir, Kieran Young·Apr 24, 2024
This paper presents a novel approach for minimizing the number of teleportations in Distributed Quantum Computing (DQC) using formal methods. Quantum teleportation plays a major role in communicating quantum information. As such, it is desirable to p...
Constant-Depth Preparation of Matrix Product States with Adaptive Quantum Circuits
Kevin C. Smith, Abid Khan, Bryan K. Clark +2 more·Apr 24, 2024
Adaptive quantum circuits, which combine local unitary gates, midcircuit measurements, and feedforward operations, have recently emerged as a promising avenue for efficient state preparation, particularly on near-term quantum devices limited to shall...
Optimal entanglement generation in optomechanical systems via Krotov control of covariance matrix dynamics
Pengju Chen, Da-Wei Luo, Ting Yu·Apr 24, 2024
We investigate the optimal control of a continuous variable system, focusing on entanglement generation in an optomechanical system without utilizing Fock basis cutoffs. Using the Krotov algorithm to optimize the dynamics of the covariance matrix, we...
Benchmarking a heuristic Floquet adiabatic algorithm for the Max-Cut problem
Etienne Granet, Henrik Dreyer·Apr 24, 2024
According to the adiabatic theorem of quantum mechanics, a system initially in the ground state of a Hamiltonian remains in the ground state if one slowly changes the Hamiltonian. This can be used in principle to solve hard problems on quantum comput...
Guided-SPSA: Simultaneous Perturbation Stochastic Approximation Assisted by the Parameter Shift Rule
Maniraman Periyasamy, A. Plinge, Christopher Mutschler +2 more·Apr 24, 2024
The study of variational quantum algorithms (VQCs) has received significant attention from the quantum computing community in recent years. These hybrid algorithms, utilizing both classical and quantum components, are well-suited for noisy intermedia...
Performant near-term quantum combinatorial optimization
Titus Morris, Ananth Kaushik, Martin Roetteler +1 more·Apr 24, 2024
Combinatorial optimization is a promising application for near-term quantum computers, however, identifying performant algorithms suited to noisy quantum hardware remains as an important goal to potentially realizing quantum computational advantages....
Efficiently constructing a quantum uniform superposition over bit strings near a binary linear code
E. Farhi, S. Jordan·Apr 24, 2024
We demonstrate that a high fidelity approximation to $\ket{\Psi_b}$, the quantum superposition over all bit strings within Hamming distance $b$ of the codewords of a dimension-$k$ linear code over $\mathbb{Z}_2^n$, can be efficiently constructed by a...
Simulating unsteady flows on a superconducting quantum processor
Zhaoyuan Meng, Jiarun Zhong, Shibo Xu +24 more·Apr 24, 2024
Recent advancements of quantum technologies have triggered tremendous interest in exploring practical quantum advantage. The simulation of fluid dynamics, a highly challenging problem in classical physics but vital for practical applications, emerges...
Creating Entangled Logical Qubits in the Heavy-Hex Lattice with Topological Codes
Bence Het'enyi, James R. Wootton·Apr 24, 2024
Designs for quantum error correction depend strongly on the connectivity of the qubits. For solid-state qubits, the most straightforward approach is to have connectivity constrained to a planar graph. Practical considerations may also further restric...
A Bi-directional Quantum Search Algorithm
Debanjan Konar, Zain Hafeez, Vaneet Aggarwal·Apr 24, 2024
Grover's search algorithms, including various partial Grover searches, experience scaling problems as the number of iterations rises with increased qubits, making implementation more computationally expensive. This paper combines Partial Grover's sea...
Extension of a pattern recognition validation approach for noisy boson sampling
Y. Ji, Yongzheng Wu, Shi Wang +3 more·Apr 24, 2024
Boson sampling is one of the main quantum computation models to demonstrate the quantum computational advantage. However, this aim may be hard to realize considering two main kinds of noises, which are photon distinguishability and photon loss. Inspi...