Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Block encoding bosons by signal processing
Christopher F. Kane, Siddharth Hariprakash, Neel S. Modi +2 more·Aug 29, 2024
Block Encoding (BE) is a crucial subroutine in many modern quantum algorithms, including those with near-optimal scaling for simulating quantum many-body systems, which often rely on Quantum Signal Processing (QSP). Currently, the primary methods for...
Comparing quantum and classical Monte Carlo algorithms for estimating Betti numbers of clique complexes
I. Akhalwaya, Ahmed Bhayat, Adam Connolly +4 more·Aug 29, 2024
Several quantum and classical Monte Carlo algorithms for Betti Number Estimation (BNE) on clique complexes have recently been proposed, though it is unclear how their performances compare. We review these algorithms, emphasising their common Monte Ca...
Unconditional advantage of noisy qudit quantum circuits over biased threshold circuits in constant depth
Michael de Oliveira, Sathyawageeswar Subramanian, Leandro Mendes +1 more·Aug 29, 2024
The rapid evolution of quantum devices fuels concerted efforts to experimentally establish quantum advantage over classical computing. Many demonstrations of quantum advantage, however, rely on computational assumptions and face verification challeng...
Long-Range ZZ Interaction via Resonator-Induced Phase in Superconducting Qubits.
Xiang Deng, Wen Zheng, Xudong Liao +8 more·Aug 29, 2024
Superconducting quantum computing emerges as one of the leading candidates for achieving quantum advantage. However, a prevailing challenge is the coding overhead due to limited quantum connectivity, constrained by nearest-neighbor coupling among sup...
Experimental measurement and a physical interpretation of quantum shadow enumerators
Daniel Miller, Kyano Levi, L. Postler +18 more·Aug 29, 2024
Throughout its history, the theory of quantum error correction has heavily benefited from translating classical concepts into the quantum setting. In particular, classical notions of weight enumerators, which relate to the performance of an error-cor...
Quantum sieving for code-based cryptanalysis and its limitations for ISD
Lynn Engelberts, Simona Etinski, Johanna Loyer·Aug 29, 2024
Sieving using near-neighbor search techniques is a well-known method in lattice-based cryptanalysis, yielding the current best runtime for the shortest vector problem in both the classical and quantum setting. Recently, sieving has also become an imp...
Engineering squeezed thermal reservoirs via passive linear coupling
Cheng-Lin Lee, Chiao-Hsuan Wang·Aug 28, 2024
Squeezed thermal reservoirs, characterized by thermal noise with anisotropic fluctuations, have profound implications in quantum thermodynamics and serve as powerful resources for quantum information. However, their experimental realizations remain c...
Beating the Ramsey limit on sensing with deterministic qubit control
M. Hecht, Kumar Saurav, E. Vlachos +2 more·Aug 28, 2024
Qubit frequency shifts, which often contain information about a target environment variable, are detected with Ramsey interference measurements. Unfortunately, the sensitivity of this protocol is limited by decoherence. We introduce a new protocol to...
A quantum random access memory (QRAM) using a polynomial encoding of binary strings
Priyanka Mukhopadhyay·Aug 28, 2024
Quantum algorithms claim significant speedup over their classical counterparts for solving many problems. An important aspect of many of these algorithms is the existence of a quantum oracle, which needs to be implemented efficiently in order to real...
Circuit Implementation of Discrete-Time Quantum Walks on Complex Networks
Reiko Sato, Kazuhiro Saito·Aug 28, 2024
In this paper, we propose a circuit design for implementing quantum walks on complex networks. Quantum walks are powerful tools for various graph-based applications such as spatial search, community detection, and node classification. Although many q...
Fast quantum interconnects via constant-rate entanglement distillation
Christopher A. Pattison, G. Baranes, J. Pablo +3 more·Aug 28, 2024
Distributed quantum computing allows the modular construction of large-scale quantum computers and enables new protocols for blind quantum computation. However, such applications in the large-scale, fault-tolerant regime place stringent demands on th...
Quantum Algorithm for Shortest Vector Problems with Folded Spectrum Method
Kota Mizuno, S. Watabe·Aug 28, 2024
Quantum annealing has been recently studied to solve the shortest vector problem (SVP), where the norm of a lattice point vector is mapped to the problem Hamiltonian with the qudit encoding, Hamming-weight encoding, or binary encoding, and the proble...
Evaluation of Quantum Annealing-based algorithms for flexible job shop scheduling
Philipp Schworm, Xiangqian Wu, Matthias Klar +1 more·Aug 28, 2024
A flexible job shop scheduling problem (FJSSP) poses a complex optimization task in modeling real-world process scheduling tasks with conflicting objectives. To tackle FJSSPs, approximation methods are employed to ensure solutions are within acceptab...
CTRQNets & LQNets: Continuous Time Recurrent and Liquid Quantum Neural Networks
Alejandro Mayorga, Alexander Yuan, Andrew Yuan +2 more·Aug 28, 2024
Neural networks have continued to gain prevalence in the modern era for their ability to model complex data through pattern recognition and behavior remodeling. However, the static construction of traditional neural networks inhibits dynamic intellig...
Studies of the Fermi-Hubbard Model Using Quantum Computing
Adam Prokofiew, N. Sharma, S. Schnetzer·Aug 28, 2024
The use of quantum computers to calculate the ground state (lowest) energies of a spin lattice of electrons described by the Fermi-Hubbard model of great importance in condensed matter physics has been studied. The ability of quantum bits (qubits) to...
Flow of non-classical correlations in cluster states due to projective measurements
Chandan Mahto, Anil Shaji·Aug 28, 2024
We explore the flow of quantum correlations in cluster states defined on ladder type graphs as measurements are done on qubits located on the nodes of the cluster. We focus on three qubits at the end of the ladder and compute the non-classical correl...
Statistical modeling of quantum error propagation
Z. Ye·Aug 28, 2024
In this paper, I design a new statistical abstract model for studying quantum error propagation. For each circuit, I give the algorithm to construct the Error propagation space-time graph(\textbf{EPSTG}) graph as well as the bipartite reverse spannin...
Single-shot latched readout of a quantum dot qubit using barrier gate pulsing
Sanghyeok Park, Jared Benson, J. Corrigan +4 more·Aug 27, 2024
Latching techniques are widely used to enhance readout of qubits. These methods require precise tuning of multiple tunnel rates, which can be challenging to achieve under realistic experimental conditions, such as when a qubit is coupled to a single ...
Canonical Form and Finite Blocklength Bounds for Stabilizer Codes
Dimiter Ostrev·Aug 27, 2024
First, a canonical form for stabilizer parity check matrices of arbitrary size and rank is derived. Next, it is shown that the closely related canonical form of the Clifford group can be computed in time $O(n^3)$ for $n$ qubits, which improves upon t...
Weakly Fault-Tolerant Computation in a Quantum Error-Detecting Code
Christopher Gerhard, Todd A. Brun·Aug 27, 2024
Many current quantum error-correcting codes that achieve full fault tolerance suffer from having low ratios of logical to physical qubits and significant overhead. This makes them difficult to implement on current noisy intermediate-scale quantum (NI...