Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Holographic Simulation of Correlated Electrons on a Trapped-Ion Quantum Processor
Daoheng Niu, Reza Haghshenas, Yuxuan Zhang +3 more·Dec 20, 2021
We develop holographic quantum simulation techniques to prepare correlated electronic ground states in quantum matrix product state (qMPS) form, using far fewer qubits than the number of orbitals represented. Our approach starts with a holographic te...
Mitigation of Crosstalk Errors in a Quantum Measurement and Its Applications
Seungchan Seo, J. Seong, J. Bae·Dec 20, 2021
In practical realizations of quantum information processing, there may exist noise in a measurement readout stage where errors appear not only on individual qubits but also on multiple ones collectively, the latter of which is called crosstalk errors...
Calculating Nash equilibrium on quantum annealers
F. Khan, Olga Okrut, Keith Cannon +2 more·Dec 20, 2021
Adiabatic quantum computing is implemented on specialized hardware using the heuristics of the quantum annealing algorithm. To solve a problem using quantum annealing, the problem requires formatting as a discrete quadratic function without constrain...
Quantum radial basis function methods for scattered data fitting
Lingxia Cui, Hua Xiang·Dec 19, 2021
Scattered data fitting is a frequently encountered problem for reconstructing an unknown function from given scattered data. Radial basis function (RBF) methods have proven to be highly useful to deal with this problem. We describe two quantum algori...
TensorLy-Quantum: Quantum Machine Learning with Tensor Methods
T. Patti, Jean Kossaifi, S. Yelin +1 more·Dec 19, 2021
Simulation is essential for developing quantum hardware and algorithms. However, simulating quantum circuits on classical hardware is challenging due to the exponential scaling of quantum state space. While factorized tensors can greatly reduce this ...
On Variable Strength Quantum ECC
Salonik Resch, Ulya R. Karpuzcu·Dec 19, 2021
Quantum error correcting codes (QECC) facilitate timely detection and correction of errors to increase the robustness of qubits. Higher expected error rates necessitate stronger (i.e., larger-distance) QECC to guarantee correct operation. With increa...
Quantum Approximate Optimization Algorithm applied to the binary perceptron
Pietro Torta, G. Mbeng, Carlo Baldassi +2 more·Dec 19, 2021
We apply digitized Quantum Annealing (QA) and Quantum Approximate Optimization Algorithm (QAOA) to a paradigmatic task of supervised learning in artificial neural networks: the optimization of synaptic weights for the binary perceptron. At variance w...
Scalable Randomized Benchmarking of Quantum Computers Using Mirror Circuits.
T. Proctor, Stefan Seritan, K. Rudinger +3 more·Dec 18, 2021
The performance of quantum gates is often assessed using some form of randomized benchmarking. However, the existing methods become infeasible for more than approximately five qubits. Here we show how to use a simple and customizable class of circuit...
Cryptography from Pseudorandom Quantum States
P. Ananth, Luowen Qian, H. Yuen·Dec 18, 2021
Pseudorandom states, introduced by Ji, Liu and Song (Crypto'18), are efficiently-computable quantum states that are computationally indistinguishable from Haar-random states. One-way functions imply the existence of pseudorandom states, but Kretschme...
Quantum phase modulation with acoustic cavities and quantum dots
Poolad Imany, Zixuan Wang, Ryan A. Decrescent +8 more·Dec 17, 2021
Fast, efficient, and low power modulation of light at microwave frequencies is crucial for chip-scale classical and quantum processing as well as for long-range networks of superconducting quantum processors. A successful approach to bridge the gap b...
Rescaling decoder for two-dimensional topological quantum color codes on 4.8.8 lattices
Pedro Parrado-Rodríguez, M. Rispler, Markus P. Müller·Dec 17, 2021
Fault-tolerant quantum computation relies on scaling up quantum error correcting codes in order to suppress the error rate on the encoded quantum states. Topological codes, such as the surface code or color codes are leading candidates for practical ...
Quantum Computer Benchmarking via Quantum Algorithms
K. Georgopoulos, C. Emary, P. Zuliani·Dec 17, 2021
We present a framework that utilizes quantum algorithms, an architecture aware quantum noise model and an ideal simulator to benchmark quantum computers. The benchmark metrics highlight the difference between the quantum computer evolution and the si...
Performance evaluations of signed and unsigned noisy approximate quantum Fourier arithmetic
R. Basili, W. Qian, S. Sarker +6 more·Dec 17, 2021
The Quantum Fourier Transform (QFT) grants competitive advantages, especially in resource usage and circuit approximation, for performing arithmetic operations on quantum computers, and offers a potential route toward a numerical quantum-computationa...
Provable Adversarial Robustness in the Quantum Model
Khashayar Barooti, Grzegorz Gluch, R. Urbanke·Dec 17, 2021
Modern machine learning systems have been applied successfully to a variety of tasks in recent years but making such systems robust against adversarially chosen modifications of input instances seems to be a much harder problem. It is probably fair t...
Deterministic and Universal Quantum Squeezing Gate with a Teleportation‐Like Protocol
Xiaocong Sun, Yajun Wang, Yuhang Tian +4 more·Dec 17, 2021
Squeezing transformation as an essential component of quantum information processing, gives rise to the possibility to perform various tasks such as distributed quantum computation and the quantum‐logic gate. However, the reported squeezing gate with...
Sequential generation of multiphoton entanglement with a Rydberg superatom
Chao Yang, Yong Yu, Jun Li +3 more·Dec 17, 2021
Multiqubit entanglement is an indispensable resource for quantum information science. In particular, the entanglement of photons is of conceptual interest due to its implications in measurement-based quantum computing, communication and metrology. Th...
Colloquium: Advances in automation of quantum dot devices control
J. P. Zwolak, Jacob M. Taylor·Dec 17, 2021
Arrays of quantum dots (QDs) are a promising candidate system to realize scalable, coupled qubit systems and serve as a fundamental building block for quantum computers. In such semiconductor quantum systems, devices now have tens of individual elect...
A prototype of quantum von Neumann architecture
Dongsheng Wang·Dec 17, 2021
A modern computer system, based on the von Neumann architecture, is a complicated system with several interactive modular parts. It requires a thorough understanding of the physics of information storage, processing, protection, readout, etc. Quantum...
Explainable natural language processing with matrix product states
J. Tangpanitanon, Chanatip Mangkang, P. Bhadola +3 more·Dec 16, 2021
Despite empirical successes of recurrent neural networks (RNNs) in natural language processing (NLP), theoretical understanding of RNNs is still limited due to intrinsically complex non-linear computations. We systematically analyze RNNs’ behaviors i...
Portfolio Optimization on Classical and Quantum Computers Using PortFawn
Moein Owhadi-Kareshk, P. Boulanger·Dec 16, 2021
Portfolio diversification is one of the most effective ways to minimize investment risk. Individuals and fund managers aim to create a portfolio of assets that not only have high returns but are also uncorrelated. This goal can be achieved by compari...