Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Hierarchical Multigrid Ansatz for Variational Quantum Algorithms
Christo Meriwether Keller, S. Eidenbenz, Andreas Bärtschi +3 more·Dec 22, 2023
Quantum computing is an emerging topic in engineering that promises to enhance supercomputing using fundamental physics. In the near term, the best candidate algorithms for achieving this advantage are variational quantum algorithms (VQAs). We design...
Tuning Quantum Computing Privacy through Quantum Error Correction
Hui Zhong, Keyi Ju, Manojna Sistla +4 more·Dec 22, 2023
Quantum computing is a promising paradigm for efficiently solving large and high-complexity problems. However, ensuring privacy within this quantum computing necessitates innovative approaches. Existing research has introduced the concept of quantum ...
A quantum computing concept for 1-D elastic wave simulation with exponential speedup
Malte Schade, Cyrill Boesch, V. Hapla +1 more·Dec 22, 2023
Quantum computing has attracted considerable attention in recent years because it promises speedups that conventional supercomputers cannot offer, at least for some applications. Though existing quantum computers are, in most cases, still too small...
Estimation of Electrostatic Interaction Energies on a Trapped-Ion Quantum Computer
Pauline J. Ollitrault, Matthias Loipersberger, Robert M. Parrish +12 more·Dec 22, 2023
We present the first hardware implementation of electrostatic interaction energies by using a trapped-ion quantum computer. As test system for our computation, we focus on the reduction of NO to N2O catalyzed by a nitric oxide reductase (NOR). The qu...
On-demand transposition across light-matter interaction regimes in bosonic cQED
Fernando Valadares, Ni-Ni Huang, Kyle Timothy Ng Chu +5 more·Dec 22, 2023
The diverse applications of light-matter interactions in science and technology stem from the qualitatively distinct ways these interactions manifest, prompting the development of physical platforms that can interchange between regimes on demand. Bos...
Spectral signature of high-order photon processes enhanced by Cooper-pair pairing
W. C. Smith, A. Borgognoni, M. Villiers +7 more·Dec 22, 2023
Inducing interactions between individual photons is key for photonic quantum information and studying many-body photon states. Superconducting circuits are well suited to combine strong interactions with low losses. Typically, microwave photons are s...
Digital Homodyne and Heterodyne Detection for Stationary Bosonic Modes.
Ingrid Strandberg, Axel Eriksson, Baptiste Royer +2 more·Dec 22, 2023
Homo- and heterodyne detection are fundamental techniques for measuring propagating electromagnetic fields. However, applying these techniques to stationary fields confined in cavities poses a challenge. As a way to overcome this challenge, we propos...
Quantum computing with error mitigation for data-driven computational homogenization
Zengtao Kuang, Yongchun Xu, Qun Huang +3 more·Dec 22, 2023
As a crossover frontier of physics and mechanics, quantum computing is showing its great potential in computational mechanics. However, quantum hardware noise remains a critical barrier to achieving accurate simulation results due to the limitation o...
Distributed quantum neural networks via partitioned features encoding
Yoshiaki Kawase·Dec 21, 2023
Quantum neural networks are expected to be a promising application in near-term quantum computing, but face challenges such as vanishing gradients during optimization and limited expressibility by a limited number of qubits and shallow circuits. To m...
Fault-tolerant quantum architectures based on erasure qubits
Shouzhen Gu, A. Retzker, Aleksander Kubica·Dec 21, 2023
The overhead of quantum error correction (QEC) poses a major bottleneck for realizing fault-tolerant computation. To reduce this overhead, we exploit the idea of erasure qubits, relying on an efficient conversion of the dominant noise into erasures a...
A complete continuous-variable quantum computation architecture based on the 2D spatiotemporal cluster state
Peilin Du, Jing Zhang, Tiancai Zhang +2 more·Dec 21, 2023
Continuous-variable measurement-based quantum computation, which requires deterministically generated large-scale cluster states, is a promising candidate for practical, scalable, universal, and fault-tolerant quantum computation. In this work, based...
Generation of large amplitude phonon states in quantum acoustics
C. Potts, W.J.M. Franse, V.A.S.V. Bittencourt +2 more·Dec 21, 2023
The development of quantum acoustics has enabled the cooling of mechanical objects to their quantum ground state, generation of mechanical Fock-states, and Schrödinger cat states. Such demonstrations have made mechanical resonators attractive candida...
Scalable Full-Stack Benchmarks for Quantum Computers
Jordan Hines, Timothy Proctor·Dec 21, 2023
Quantum processors are now able to run quantum circuits that are infeasible to simulate classically, creating a need for benchmarks that assess a quantum processor's rate of errors when running these circuits. Here, we introduce a general technique f...
Quantum Entanglement between Optical and Microwave Photonic Qubits
S. Meesala, David Lake, Steven Wood +6 more·Dec 21, 2023
Entanglement is an extraordinary feature of quantum mechanics. Sources of entangled optical photons were essential to test the foundations of quantum physics through violations of Bell’s inequalities. More recently, entangled many-body states have be...
Optical decoder learning for fiber communication at the quantum limit
Matteo Rosati, A. Solana·Dec 21, 2023
Quantum information theory predicts that communication technology can be enhanced by using quantum signals to transfer classical bits. In order to fulfill this promise, the message-carrying signals must interact coherently at the decoding stage via a...
Efficient Microwave Photon-to-Electron Conversion in a High-Impedance Quantum Circuit.
Ognjen Stanisavljevi'c, Jean-Côme Philippe, J. Gabelli +3 more·Dec 21, 2023
We demonstrate an efficient and continuous microwave photon-to-electron converter with large quantum efficiency (83%) and low dark current. These unique properties are enabled by the use of a high kinetic inductance disordered superconductor, granula...
Adaptive variational low-rank dynamics for open quantum systems
Luca Gravina, Vincenzo Savona·Dec 21, 2023
We introduce a novel, model-independent method for the efficient simulation of low-entropy systems, whose dynamics can be accurately described with a limited number of states. Our method leverages the time-dependent variational principle to efficient...
Scalable simulation of nonequilibrium quantum dynamics via classically optimized unitary circuits
Luke Causer, Felix Jung, Asimpunya Mitra +2 more·Dec 21, 2023
The advent of near-term digital quantum computers could offer us an exciting opportunity to investigate quantum many-body phenomena beyond that of classical computing. To make the best use of the hardware available, it is paramount that we have metho...
Which Options Exist for NISQ-Friendly Linear Response Formulations?
K. M. Ziems, E. Kjellgren, Peter Reinholdt +4 more·Dec 21, 2023
Linear response (LR) theory is a powerful tool in classic quantum chemistry crucial to understanding photoinduced processes in chemistry and biology. However, performing simulations for large systems and in the case of strong electron correlation rem...
Occupation-number quantum-subspace-expansion approach to computing the single-particle Green function: An opportunity for noise filtering
B. Gauthier, P. Rosenberg, A. Foley +1 more·Dec 21, 2023
We introduce a hybrid quantum-classical algorithm to compute the Green function for strongly correlated electrons on noisy intermediate-scale quantum (NISQ) devices. The technique consists in the construction of a non-orthogonal excitation basis comp...