Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Designing open quantum systems with known steady states: Davies generators and beyond
Jinkang Guo, Oliver Hart, Chi-Fang Chen +2 more·Apr 22, 2024
We provide a systematic framework for constructing generic models of nonequilibrium quantum dynamics with a target stationary (mixed) state. Our framework identifies (almost) all combinations of Hamiltonian and dissipative dynamics that relax to a st...
Two remote counting events induced by a single photon
Lida Zhang·Apr 21, 2024
Motivated by Einstein's thought experiment that a single quantum particle diffracted after a pinhole could in principle produce an action in two or several places on a hemispherical imaging screen, here we explore theoretically the possibility to sim...
Numerical Evidence for a Bipartite Pure State Entanglement Witness from Approximate Analytical Diagonalization
P. Alsing, Richard J. Birrittella·Apr 21, 2024
We show numerical evidence for a bipartite d×d pure state entanglement witness that is readily calculated from the wavefunction coefficients directly, without the need for the numerical computation of eigenvalues. This is accomplished by using an app...
A route to quantum computing through the theory of quantum graphs
Farrokh Razavinia·Apr 21, 2024
Based on our previous works, and in order to relate them with the theory of quantum graphs and the quantum computing principles, we once again try to introduce some newly developed technical structures just by relying on our toy example, the coordina...
Optimized mechanical quadrature squeezing beyond the 3-dB limit via a gradient-descent algorithm
Yu-Hong Liu, Jie-Qiao Liao·Apr 21, 2024
The preparation of mechanical quadrature-squeezed states holds significant importance in cavity optomechanics because the squeezed states have extensive applications in understanding fundamental quantum mechanics and exploiting modern quantum technol...
PristiQ: A Co-Design Framework for Preserving Data Security of Quantum Learning in the Cloud
Zhepeng Wang, Yi Sheng, Nirajan Koirala +4 more·Apr 20, 2024
Benefiting from cloud computing, today's early-stage quantum computers can be remotely accessed via the cloud services, known as Quantum-as-a-Service (QaaS). However, it poses a high risk of data leakage in quantum machine learning (QML). To run a QM...
Nanomechanical ancilla qubits generator for error correction algorithms in quantum computation
D. Radi'c, L. Gorelik, S. Kulinich +1 more·Apr 20, 2024
We suggest a nanoelectromechanical setup that generates properly entangled ancillary ("ancilla") qubits for error correction algorithms in quantum computing, demonstrated as an encoder for the three-qubit bit flip code. The setup is based on mesoscop...
Classical Commitments to Quantum States
S. Gunn, Yael Tauman Kalai, Anand Natarajan +1 more·Apr 19, 2024
We define the notion of a classical commitment scheme to quantum states, which allows a quantum prover to compute a classical commitment to a quantum state, and later open each qubit of the state in either the standard or the Hadamard basis. Our noti...
Exploring qubit-ADAPT-VQE for materials discovery in direct air capture
M. A. Barroca, Rodrigo Neumann Barros Ferreira, Mathias B. Steiner·Apr 19, 2024
Direct air capture (DAC) of carbon dioxide is a promising method for mitigating climate change. Solid sorbents, such as metal–organic frameworks, are currently being tested for DAC application. However, their potential for deployment at scale has not...
Erasure-Tolerance Scheme for the Surface Codes on Neutral Atom Quantum Computers
Fumiyoshi Kobayashi, Shota Nagayama·Apr 19, 2024
Neutral atom arrays manipulated with optical tweezers are promising candidates for fault-tolerant quantum computers due to their advantageous properties, such as scalability, long coherence times, and optical accessibility for communication. A signif...
Hybrid Quantum Tabu Search for Solving the Vehicle Routing Problem
James Holliday, Braeden Morgan, Hugh Churchill +1 more·Apr 19, 2024
There has never been a more exciting time for the future of quantum computing than now. Real-world quantum computing usage is now the next XPRIZE. With that challenge in mind we have explored a new approach as a hybrid quantum-classical algorithm for...
TANQ-Sim: Tensorcore Accelerated Noisy Quantum System Simulation via QIR on Perlmutter HPC
Ang Li, Chenxu Liu, S. Stein +7 more·Apr 19, 2024
Although there have been remarkable advances in quantum computing (QC), it remains crucial to simulate quantum programs using classical large-scale parallel computing systems to validate quantum algorithms, comprehend the impact of noise, and develop...
Qwerty: A Basis-Oriented Quantum Programming Language
Austin J. Adams, Sharjeel Khan, Jeffrey S. Young +1 more·Apr 19, 2024
Quantum computers have leaped from the theoretical realm into a race to large-scale implementations. This is due to the promise of revolutionary speedups, where achieving such speedup requires designing an algorithm that harnesses the structure of a ...
Demonstration of quantum projective simulation on a single-photon-based quantum computer
Giacomo Franceschetto, Arno Ricou·Apr 19, 2024
Variational quantum algorithms show potential in effectively operating on noisy intermediate-scale quantum devices. A variational approach to reinforcement learning has been recently proposed, incorporating linear-optical interferometers and a classi...
The Localized Active Space Method with Unitary Selective Coupled Cluster.
Abhishek Mitra, Ruhee D'Cunha, Qiaohong Wang +5 more·Apr 19, 2024
We introduce a hybrid quantum-classical algorithm, the localized active space unitary selective coupled cluster singles and doubles (LAS-USCCSD) method. Derived from the localized active space unitary coupled cluster (LAS-UCCSD) method, LAS-USCCSD fi...
Multi-Class Quantum Convolutional Neural Networks
Marco Mordacci, Davide Ferrari, Michele Amoretti·Apr 19, 2024
Classification is particularly relevant to Information Retrieval, as it is used in various subtasks of the search pipeline. In this work, we propose a quantum convolutional neural network (QCNN) for multi-class classification of classical data. The m...
Lattice Surgery for Dummies
Avimita Chatterjee, Subrata Das, Swaroop Ghosh·Apr 19, 2024
Quantum error correction (QEC) plays a crucial role in correcting noise and paving the way for fault-tolerant quantum computing. This field has seen significant advancements, with new quantum error correction codes emerging regularly to address error...
High-rate quantum LDPC codes for long-range-connected neutral atom registers
Laura Pecorari, Sven Jandura, G. Brennen +1 more·Apr 19, 2024
High-rate quantum error correcting (QEC) codes with moderate overheads in qubit number and control complexity are highly desirable for achieving fault-tolerant quantum computing. Recently, quantum error correction has experienced significant progress...
Active robustness against the detuning-error for Rydberg quantum gates
Qing-Ling Hou, Han Wang, Jing Qian·Apr 18, 2024
Error suppression to the experimental imperfections is a central challenge for useful quantum computing. Recent studies have shown the advantages of using single-modulated pulses based on optimal control which can realize high-fidelity two-qubit gate...
Quantum trajectory entanglement in various unravelings of Markovian dynamics
T. Vovk, Hannes Pichler·Apr 18, 2024
The cost of classical simulations of quantum many-body dynamics is often determined by the amount of entanglement in the system. In this paper, we study entanglement in stochastic quantum trajectory approaches that solve master equations describing o...