Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Spin/Phonon Dynamics in Single Molecular Magnets: I. quantum embedding
Nosheen Younas, Yu Zhang, Andrei Piryatinski +1 more·Jul 10, 2024
Single molecular magnets (SMMs) and Metal-Organic Frameworks (MOFs) attract significant interest due to their potential in quantum information processing, scalable quantum computing, and extended lifetimes and coherence times. The limiting factor in ...
Information dynamics in decohered quantum memory with repeated syndrome measurements: a dual approach
Jacob Hauser, Yimu Bao, Shengqi Sang +3 more·Jul 10, 2024
Measurements can detect errors in a decohered quantum memory allowing active error correction to increase the memory time. Previous understanding of this mechanism has focused on evaluating the performance of error correction algorithms based on meas...
The Quantum Imitation Game: Reverse Engineering of Quantum Machine Learning Models
Archisman Ghosh, Swaroop Ghosh·Jul 9, 2024
Quantum Machine Learning (QML) is an amalgamation of quantum computing paradigms with machine learning models, providing significant prospects for solving complex problems. However, with the expansion of numerous third-party vendors in the Noisy Inte...
Passive Photonic CZ Gate with Two-Level Emitters in Chiral Multimode Waveguide QED
Tomás Levy-Yeyati, C. Vega, T. Ramos +1 more·Jul 8, 2024
Engineering deterministic photonic gates with simple resources is one of the long-standing challenges in photonic quantum computing. Here, we design a passive conditional gate between copropagating photons using an array of only two-level emitters. T...
A Multiparty Quantum Private Equality Comparison Scheme Relying on |GHZ3⟩ States
Theodore Andronikos, Alla Sirokofskich·Jul 7, 2024
In this work, we present a new protocol that accomplishes multiparty quantum private comparison leveraging maximally entangled |GHZ3⟩ triplets. Our intention was to develop a protocol that can be readily executed by contemporary quantum computers. Th...
Qudit Dynamical Decoupling on a Superconducting Quantum Processor.
Vinay Tripathi, Noah Goss, A. Vezvaee +3 more·Jul 5, 2024
Multilevel qudit systems are increasingly being explored as alternatives to traditional qubit systems due to their denser information storage and processing potential. However, qudits are more susceptible to decoherence than qubits due to increased l...
Discovering Local Hidden-Variable Models for Arbitrary Multipartite Entangled States and Arbitrary Measurements
Nick von Selzam, Florian Marquardt·Jul 5, 2024
Measurement correlations in quantum systems can exhibit nonlocal behavior, a fundamental aspect of quantum mechanics with applications such as device-independent quantum information processing. However, it is in general not known which states are loc...
Kalman filter enhanced Adversarial Bayesian optimization for active sampling in inelastic neutron scattering
Nihad Abuawwad, Yixuan Zhang, Samir Lounis +1 more·Jul 5, 2024
Spin waves, or magnons, are fundamental excitations in magnetic materials that provide insights into their dynamic properties and interactions. Magnons are the building blocks of magnonics, which offer promising perspectives for data storage, quantum...
Deterministic entanglement swapping of W states
Sajede Harraz, Yueyan Wang, Shuang Cong·Jul 4, 2024
In this paper, we propose a deterministic entanglement swapping protocol for generating a shared three-qubit W state between two remote parties. Our method offers a reliable alternative to existing probabilistic protocols for W state entanglement swa...
CRUISE on Quantum Computing for Feature Selection in Recommender Systems
Jiayang Niu, Jie Li, Ke Deng +1 more·Jul 3, 2024
Using Quantum Computers to solve problems in Recommender Systems that classical computers cannot address is a worthwhile research topic. In this paper, we use Quantum Annealers to address the feature selection problem in recommendation algorithms. Th...
Low variance estimations of many observables with tensor networks and informationally-complete measurements
Stefano Mangini, Daniel Cavalcanti·Jul 3, 2024
Accurately estimating the properties of quantum systems is a central challenge in quantum computing and quantum information. We propose a method to obtain unbiased estimators of multiple observables with low statistical error by post-processing infor...
The sudden death of quantum advantage in correlation generations
Weixiao Sun, Fuchuan Wei, Yuguo Shao +1 more·Jul 3, 2024
As quantum error corrections still cannot be realized physically, quantum noise is the most profound obstacle to the implementations of large-scale quantum algorithms or quantum schemes. It has been well-known that if a quantum computer suffers from ...
Accelerating quantum imaginary-time evolution with random measurements
Ioannis Kolotouros, David Joseph, Anand Kumar Narayanan·Jul 3, 2024
Quantum imaginary-time evolution (QITE) is a promising tool to prepare thermal or ground states of Hamiltonians, as convergence is guaranteed when the evolved state overlaps with the ground state. However, its implementation using a a hybrid quantum-...
Coherent information for Calderbank-Shor-Steane codes under decoherence
Ryotaro Niwa, Jong Yeon Lee·Jul 2, 2024
Stabilizer codes lie at the heart of modern quantum-error-correcting codes (QECC). Of particular importance is a class called Calderbank-Shor-Steane (CSS) codes, which includes many important examples such as toric codes, color codes, and fractons. R...
Strong Intrinsic Longitudinal Coupling in Circuit Quantum Electrodynamics.
C. Potts, R. Dekker, S. Deve +2 more·Jul 2, 2024
Radiation-pressure interactions between harmonic oscillators have enabled exquisite measurement precision and control, made possible by using strong sideband drives, enhancing the coupling rate while also linearizing the interaction. In this Letter, ...
Global calibration of large-scale photonic integrated circuits
Jin Zheng, Qin-Qin Wang, Lantian Feng +5 more·Jul 2, 2024
The growing maturity of photonic integrated circuit (PIC) fabrication technology enables the high integration of an increasing number of optical components onto a single chip. With the incremental circuit complexity, the calibration of active phase s...
Ground and excited state energy calculations of the H2 molecule using a variational quantum eigensolver algorithm on an NMR quantum simulator
Dileep Singh, Shashank G. Mehendale, Arvind +1 more·Jul 1, 2024
Variational quantum algorithms are emerging as promising candidates for near-term practical applications of quantum information processors, in the field of quantum chemistry. We implement the variational quantum eigensolver algorithm to calculate the...
Implementation of a scalable universal two-qubit quantum processor with electron and nuclear spins in a trapped ion
Ji Bian, Teng Liu, Qifeng Lao +5 more·Jul 1, 2024
Increasing the quantum information processing power with limited number of hosts is vital for achieving quantum advantage. Here we propose a novel scheme that achieves a scalable n-ion-2n-qubit quantum processor utilizing four internal levels of each...
Batch Entanglement Detection in Parameterized Qubit States using Classical Bandit Algorithms
K. Bharati, Vikesh Siddhu, Krishna Jagannathan·Jun 28, 2024
Entanglement is a key property of quantum states that acts as a resource for a wide range of tasks in quantum computing. Entanglement detection is a key conceptual and practical challenge. Without adaptive or joint measurements, entanglement detectio...
Contextuality of all optimal quantum cloning
Mina Doosti, Theodoros Yianni, Farid Shahandeh·Jun 27, 2024
Quantum contextuality is a key nonclassical feature underlying advantages in quantum computation and communication. We introduce a new method to study contextuality in quantum information-processing tasks and protocols, relying solely on observed inf...