Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Small Quantum Codes from Algebraic Extensions of Generalized Bicycle Codes
Nikolaos Koukoulekidis, IV FedorSimkovic, Martin Leib +1 more·Jan 15, 2024
Quantum error correction is rapidly seeing first experimental implementations, but there is a significant gap between asymptotically optimal error-correcting codes and codes that are experimentally feasible. Quantum LDPC codes range from the surface ...
Generative AI-enabled Quantum Computing Networks and Intelligent Resource Allocation
Minrui Xu, D. Niyato, Jiawen Kang +5 more·Jan 13, 2024
Quantum computing networks enable scalable collaboration and secure information exchange among multiple classical and quantum computing nodes while executing large-scale generative AI computation tasks and advanced quantum algorithms. Quantum computi...
Simulating Quantum Systems with NWQ-Sim on HPC
In-Saeng Suh, Ang Li·Jan 12, 2024
NWQ-Sim is a cutting-edge quantum system simulation environment designed to run on classical multi-node, multi-CPU/GPU heterogeneous HPC systems. In this work, we provide a brief overview of NWQ-Sim and its implementation in simulating quantum circui...
Optimized Noise Suppression for Quantum Circuits
Friedrich Wagner, Daniel J. Egger, F. Liers·Jan 12, 2024
Quantum computation promises to advance a wide range of computational tasks. However, current quantum hardware suffers from noise and is too small for error correction. Thus, accurately utilizing noisy quantum computers strongly relies on noise chara...
Covert Quantum Communication Over Optical Channels
Evan J. D. Anderson, Christopher K. Eyre, Isabel M. Dailey +2 more·Jan 12, 2024
We explore covert communication of qubits over the lossy thermal-noise bosonic channel, which is a quantum-mechanical model of many practical channels, including optical. Covert communication ensures that an adversary is unable to detect the presence...
Graph representation learning for parameter transferability in quantum approximate optimization algorithm
Jose Falla, Q. Langfitt, Yuri Alexeev +1 more·Jan 12, 2024
The quantum approximate optimization algorithm (QAOA) is one of the most promising candidates for achieving quantum advantage through quantum-enhanced combinatorial optimization. Optimal QAOA parameter concentration effects for special MaxCut problem...
Advantage of Quantum Neural Networks as Quantum Information Decoders
Weishun Zhong, O. Shtanko, R. Movassagh·Jan 11, 2024
A promising strategy to protect quantum information from noise-induced errors is to encode it into the low-energy states of a topological quantum memory device. However, readout errors from such memory under realistic settings is less understood. We ...
Geodesic algorithm for unitary gate design with time-independent Hamiltonians
D. Lewis, R. Wiersema, J. Carrasquilla +1 more·Jan 11, 2024
Larger multiqubit quantum gates allow shallower, more efficient quantum circuits, which could decrease the prohibitive effect of noise on algorithms for noisy intermediate-scale quantum (NISQ) devices and fault-tolerant error correction schemes. Such...
Efficient and Robust Parameter Optimization of the Unitary Coupled-Cluster Ansatz.
Weitang Li, Yufei Ge, Shi-Xin Zhang +2 more·Jan 10, 2024
The variational quantum eigensolver (VQE) framework has been instrumental in advancing near-term quantum algorithms. However, parameter optimization remains a significant bottleneck for VQE, requiring a large number of measurements for successful alg...
Nonreciprocal Quantum Batteries.
Borhan Ahmadi, P. Mazurek, P. Horodecki +1 more·Jan 10, 2024
Nonreciprocity, arising from the breaking of time-reversal symmetry, has become a fundamental tool in diverse quantum technology applications. It enables directional flow of signals and efficient noise suppression, constituting a key element in the a...
Coherent errors in stabilizer codes caused by quasistatic phase damping
Dávid Pataki, Áron Márton, János K. Asbóth +1 more·Jan 9, 2024
Quantum error correction is a key challenge for the development of practical quantum computers, a direction in which significant experimental progress has been made in recent years. In solid-state qubits, one of the leading information loss mechanism...
Error suppression in multicomponent cat codes with photon subtraction and teleamplification.
S. U. Shringarpure, Yong-Siah Teo, Hyunseok Jeong·Jan 9, 2024
It is known that multiphoton states can be protected from decoherence due to a passive loss channel by applying noiseless attenuation before and noiseless amplification after the channel. In this work, we propose the combined use of multiphoton subtr...
Exact results on finite size corrections for surface codes tailored to biased noise
Yinzi Xiao, Basudha Srivastava, Mats Granath·Jan 8, 2024
The code-capacity threshold of a scalable quantum error correcting stabilizer code can be expressed as a thermodynamic phase transition of a corresponding random-bond Ising model. Here we study the XY and XZZX surface codes under phase-biased noise, ...
Design of Fully Integrated 45 nm CMOS System-on-Chip Receiver for Readout of Transmon Qubit
Ahmad Salmanogli, A. Bermak·Jan 8, 2024
This study unveils a comprehensive design strategy, intricately addressing the realization of transmon qubits, the design of Josephson parametric amplifiers, and the development of an innovative fully integrated receiver dedicated to sensing ultra-lo...
Fast and high-fidelity dispersive readout of a spin qubit via squeezing and resonator nonlinearity
Chon‐Fai Kam, Xuedong Hu·Jan 8, 2024
Fast and high-fidelity qubit measurement is crucial for achieving quantum error correction, a fundamental element in the development of universal quantum computing. For electron spin qubits, fast readout stands out as a major obstacle in the pursuit ...
Fault-Tolerant Quantum Computation Using Large Spin-Cat Codes
Sivaprasad Omanakuttan, Vikas Buchemmavari, J. Gross +2 more·Jan 8, 2024
We construct a fault-tolerant quantum error-correcting protocol based on a qubit encoded in a large spin qudit using a spin-cat code, analogous to the continuous-variable cat encoding. With this, we can correct the dominant error sources, namely proc...
Ground state energy and magnetization curve of a frustrated magnetic system from real-time evolution on a digital quantum processor
A. Szasz, Ed Younis, W. A. Jong·Jan 5, 2024
Models of interacting many-body quantum systems that may realize new exotic phases of matter, notably quantum spin liquids, are challenging to study using even state-of-the-art classical methods such as tensor network simulations. Quantum computing p...
Matrix product state ansatz for the variational quantum solution of the Heisenberg model on Kagome geometries
Younes Javanmard, Ugne Liaubaite, Tobias J. Osborne +2 more·Jan 4, 2024
The Variational Quantum Eigensolver (VQE) algorithm, as applied to finding the ground state of a Hamiltonian, is particularly well-suited for deployment on noisy intermediate-scale quantum (NISQ) devices. Here, we utilize the VQE algorithm with a qua...
Near-Optimal Performance of Quantum Error Correction Codes.
Guo Zheng, Wenhao He, Gideon Lee +1 more·Jan 4, 2024
The Knill-Laflamme conditions distinguish exact quantum error correction codes, and they have played a critical role in the discovery of state-of-the-art codes. However, the family of exact codes is a very restrictive one and does not necessarily con...
A noise-limiting quantum algorithm using mid-circuit measurements for dynamical correlations at infinite temperature
Etienne Granet, Henrik Dreyer·Jan 4, 2024
It is generally considered that the signal output by a quantum circuit is attenuated exponentially fast in the number of gates. This letter explores how algorithms using mid-circuit measurements and classical conditioning as computational tools (and ...