Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Scaling up to problem sizes: an environmental life cycle assessment of quantum computing
S. Cordier, Karl Thibault, Marie-Luc Arpin +1 more·Oct 31, 2024
With the demonstrated ability to perform calculations in seconds that would take classical supercomputers thousands of years, quantum computers namely hold the promise of radically advancing sustainable IT. However, quantum computers face challenges ...
Crosstalk Attack Resilient RNS Quantum Addition
Bhaskar Gaur, Himanshu Thapliyal·Oct 30, 2024
As quantum computers scale, the rise of multi-user and cloud-based quantum platforms can lead to new security challenges. Attacks within shared execution environments become increasingly feasible due to the crosstalk noise that, in combination with q...
Hybrid cat-transmon architecture for scalable, hardware-efficient quantum error correction
Connor T. Hann, Kyungjoo Noh, Harald Putterman +6 more·Oct 30, 2024
Dissipative cat qubits are a promising physical platform for quantum computing, since their large noise bias can enable more hardware-efficient quantum error correction. In this work we theoretically study the long-term prospects of a hybrid cat-tran...
Computation with quantum Reed-Muller codes and their mapping onto 2D atom arrays
Anqi Gong, J. Renes·Oct 30, 2024
We give a fault tolerant construction for error correction and computation using two punctured quantum Reed-Muller (PQRM) codes. In particular, we consider the $[[127,1,15]]$ self-dual doubly-even code that has transversal Clifford gates (CNOT, H, S)...
Entanglement-enhanced AC magnetometry in the presence of Markovian noises
Thanaporn Sichanugrist, Hajime Fukuda, Takeo Moroi +5 more·Oct 29, 2024
Entanglement is a resource to improve the sensitivity of quantum sensors. In an ideal case, using an entangled state as a probe to detect target fields, we can beat the standard quantum limit by which all classical sensors are bounded. However, since...
Stabilizing Non-Abelian Topological Order against Heralded Noise via Local Lindbladian Dynamics
Sanket Chirame, Abhinav Prem, Sarang Gopalakrishnan +1 more·Oct 28, 2024
An important open question for the current generation of highly controllable quantum devices is understanding which phases can be realized as stable steady-states under local quantum dynamics. In this work, we show how robust steady-state phases with...
Stabilizer configuration interaction: Finding molecular subspaces with error detection properties
Abhinav Anand, Kenneth R. Brown·Oct 28, 2024
In this work, we explore a new approach to designing both algorithms and error detection codes for preparing approximate ground states of molecules. We propose a classical algorithm to find the optimal stabilizer state by using excitations of the Har...
Simulating NMR Spectra with a Quantum Computer
Joaqu'in Ossorio-Castillo, Alexandre Rodr'iguez-Coello·Oct 28, 2024
The procedure for simulating the nuclear magnetic resonance spectrum linked to the spin system of a molecule for a certain nucleus entails diagonalizing the associated Hamiltonian matrix. As the dimensions of said matrix grow exponentially with respe...
Characterization of Noise using variants of Unitarity Randomized Benchmarking
A. Chandrashekar, Soumya Das, Goutam Paul·Oct 27, 2024
Benchmarking of noise that is induced during the implementation of quantum gates is the main concern for practical quantum computers. Several protocols have been proposed that empirically calculate various metrics that quantify the error rates of the...
Experimental Verification of Bell‐Type Inequalities Using Four‐Qubit Dicke States on Quantum Processors
Tomis Prajapati, Harsh Mehta, Shreya Banerjee +2 more·Oct 26, 2024
Testing for a violation of Bell‐type inequalities provides a standard approach to investigating nonlocal correlations in nonclassical (entangled) states. In this study, a custom measurement operator composed of a linear combination of Pauli matrices ...
Method for noise-induced regularization in quantum neural networks
Viacheslav Kuzmin, Wilfrid Somogyi, Ekaterina Pankovets +1 more·Oct 25, 2024
In the current quantum computing paradigm, significant focus is placed on the reduction or mitigation of quantum decoherence. When designing new quantum processing units, the general objective is to reduce the amount of noise qubits are subject to, a...
Enhancing Quantum Key Distribution with Entanglement Distillation and Classical Advantage Distillation
Shin Sun, K. Goodenough, Daniel Bhatti +1 more·Oct 25, 2024
Realizing secure communication between distant parties is one of quantum technology's main goals. Although quantum key distribution promises information-theoretic security for sharing a secret key, the key rate heavily depends on the level of noise i...
Thermal cycling: Evidence for a generalized tunneling model and a tool to distinguish noise sources in quantum circuits
Yigal Reiss, Moshe Schechter·Oct 25, 2024
Structural two level systems (TLSs) ubiquitous in amorphous solids are dramatically sensitive to thermal cycling to about $20$K and then back to low temperature, a process upon which the excitation energy of most TLSs is significantly changed. Using ...
Practical implementation of Toffoli-based qubit rotation
Christoffer Hindlycke, Jakov Krnic, Jan-Åke Larsson·Oct 24, 2024
The Toffoli gate is an important universal quantum gate, and will alongside the Clifford gates be available in future fault-tolerant quantum computing hardware. Many quantum algorithms rely on performing arbitrarily small single-qubit rotations for t...
Pure and Mixed State Entanglement Dynamics in Tavis-Cummings Model with Squeezed Coherent Thermal States
Koushik Mandal, M. V. Satyanarayana·Oct 24, 2024
We investigate the entanglement dynamics of two atoms interacting with a single-mode cavity field within the Tavis-Cummings model in the presence of noise. The atoms are initially prepared in either pure Bell states or mixed Werner states, allowing a...
Characterizing Conical Intersections of Nucleobases on Quantum Computers.
Yuchen Wang, Cameron Cianci, Irma Avdic +7 more·Oct 24, 2024
Hybrid quantum-classical computing algorithms offer significant potential for accelerating the calculation of the electronic structure of strongly correlated molecules. In this work, we present the first quantum simulation of conical intersections (C...
The Learning Stabilizers with Noise problem
Alexander Poremba, Yihui Quek, Peter W. Shor·Oct 24, 2024
Random classical codes have good error correcting properties, and yet they are notoriously hard to decode in practice. Despite many decades of extensive study, the fastest known algorithms still run in exponential time. The Learning Parity with Noise...
Quantum Computing Approach to Fixed-Node Monte Carlo Using Classical Shadows
N. S. Blunt, Laura Caune, Javiera Quiroz-Fernandez·Oct 24, 2024
Quantum Monte Carlo (QMC) methods are powerful approaches for solving electronic structure problems. Although they often provide high-accuracy solutions, the precision of most QMC methods is ultimately limited by the trial wave function that must be ...
Stochastic optimal control of open quantum systems
Aarón Villanueva, H. Kappen·Oct 24, 2024
We address the generic problem of optimal quantum state preparation for open quantum systems. It is well known that open quantum systems can be simulated by quantum trajectories described by a stochastic Schr\"odinger equation. In this context, the s...
Iteratively decoded magic state distillation
Kwok Ho Wan·Oct 23, 2024
We present numerical simulation results for the 7-to-1 and 15-to-1 state distillation circuits, constructed using transversal CNOTs acting on multiple surface code patches. The distillation circuits are decoded iteratively using the method outlined i...