Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,881
This Month
1,306
Today
0
Research Volume
13,138 papers in 12 months (+1% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Breaking RSA Security With A Low Noise D-Wave 2000Q Quantum Annealer: Computational Times, Limitations And Prospects
R. Mengoni, D. Ottaviani, Paolino Iorio·May 5, 2020
The RSA cryptosystem could be easily broken with large scale general purpose quantum computers running Shor's factorization algorithm. Being such devices still in their infancy, a quantum annealing approach to integer factorization has recently gaine...
Using Deep Learning to Understand and Mitigate the Qubit Noise Environment
D. Wise, J. Morton, S. Dhomkar·May 3, 2020
Understanding the spectrum of noise acting on a qubit can yield valuable information about its environment, and crucially underpins the optimization of dynamical decoupling protocols that can mitigate such noise. However, extracting accurate noise sp...
Multi-Photon, Multi-Dimensional Hyper-Entanglement using Higher-Order Radix qudits with Applications to Quantum Computing, QKD and Quantum Teleportation
S. Ashrafi, Logan Campbell·Apr 30, 2020
Google recently announced that they had achieved quantum supremacy with 53 qubits (base-2 binaries or radix-2), corresponding to a computational state-space of dimension 253 (about 1016). Google claimed to perform computations that took 200 seconds o...
Resiliency analysis and improvement of variational quantum factoring in superconducting qubit
Ling Qiu, M. Alam, Abdullah Ash-Saki +1 more·Apr 26, 2020
Variational algorithm using Quantum Approximate Optimization Algorithm (QAOA) can solve the prime factorization problem in near-term noisy quantum computers. Conventional Variational Quantum Factoring (VQF) requires a large number of 2-qubit gates (e...
Using Quantum Metrological Bounds in Quantum Error Correction: A Simple Proof of the Approximate Eastin-Knill Theorem.
Aleksander Kubica, R. Demkowicz-Dobrzański·Apr 24, 2020
We present a simple proof of the approximate Eastin-Knill theorem, which connects the quality of a quantum error-correcting code (QECC) with its ability to achieve a universal set of transversal logical gates. Our derivation employs powerful bounds o...
Combining hard and soft decoders for hypergraph product codes
Antoine Grospellier, Lucien Grouès, Anirudh Krishna +1 more·Apr 23, 2020
Hypergraph product codes are a class of constant-rate quantum low-density parity-check (LDPC) codes equipped with a linear-time decoder called small-set-flip (SSF). This decoder displays sub-optimal performance in practice and requires very large err...
Quantum gradient algorithm for general polynomials
Pan Gao, Keren Li, Shijie Wei +2 more·Apr 23, 2020
Gradient-based algorithms, popular strategies to optimization problems, are essential for many modern machine-learning techniques. Theoretically, extreme points of certain cost functions can be found iteratively along the directions of the gradient. ...
Quantum Error Source and Channel Coding
D. Lucarelli·Apr 20, 2020
A classical coding across a block of logical qubits is presented. We characterize subgroups of the product stabilizer group on a block of logical qubits corresponding to dual codes of classical error correcting codes. We prove conditions on the set o...
SQUARE: Strategic Quantum Ancilla Reuse for Modular Quantum Programs via Cost-Effective Uncomputation
Yongshan Ding, Xin-Chuan Wu, Adam Holmes +4 more·Apr 18, 2020
Compiling high-level quantum programs to machines that are size constrained (i.e. limited number of quantum bits) and time constrained (i.e. limited number of quantum operations) is challenging. In this paper, we present SQUARE (Strategic QUantum Anc...
Efficient two-electron ansatz for benchmarking quantum chemistry on a quantum computer
Scott E. Smart, D. Mazziotti·Apr 17, 2020
Quantum chemistry provides key applications for near-term quantum computing, but these are greatly complicated by the presence of noise. In this work we present an efficient ansatz for the computation of two-electron atoms and molecules within a hybr...
Cellular automaton decoders for topological quantum codes with noisy measurements and beyond
M. Vasmer, D. Browne, Aleksander Kubica·Apr 15, 2020
We propose an error correction procedure based on a cellular automaton, the sweep rule, which is applicable to a broad range of codes beyond topological quantum codes. For simplicity, however, we focus on the three-dimensional toric code on the rhomb...
Operator Sampling for Shot-frugal Optimization in Variational Algorithms
A. Arrasmith, L. Cincio, R. Somma +1 more·Apr 14, 2020
Quantum chemistry is a near-term application for quantum computers. This application may be facilitated by variational quantum-classical algorithms (VQCAs), although a concern for VQCAs is the large number of measurements needed for convergence, espe...
Quantum transduction of optical photons from a superconducting qubit
M. Mirhosseini, A. Sipahigil, M. Kalaee +1 more·Apr 9, 2020
Bidirectional conversion of electrical and optical signals lies at the foundation of the global internet. Such converters are employed at repeater stations to extend the reach of long-haul fiber optic communication systems and within data centers to ...
Architecting Noisy Intermediate-Scale Trapped Ion Quantum Computers
Prakash Murali, D. Debroy, K. Brown +1 more·Apr 9, 2020
Trapped ions (TI) are a leading candidate for building Noisy Intermediate-Scale Quantum (NISQ) hardware. TI qubits have fundamental advantages over other technologies such as superconducting qubits, including high qubit quality, coherence and connect...
Fault-tolerant weighted union-find decoding on the toric code
Shilin Huang, M. Newman, K. Brown·Apr 9, 2020
Quantum error correction requires decoders that are both accurate and efficient. To this end, union-find decoding has emerged as a promising candidate for error correction on the surface code. In this work, we benchmark a weighted variant of the unio...
Classical Optimizers for Noisy Intermediate-Scale Quantum Devices
W. Lavrijsen, Ana Tudor, Juliane Müller +2 more·Apr 6, 2020
We present a collection of optimizers tuned for usage on Noisy Intermediate-Scale Quantum (NISQ) devices. Optimizers have a range of applications in quantum computing, including the Variational Quantum Eigensolver (VQE) and Quantum Approximate Optimi...
Direct estimation of minimum gate fidelity
Yiping Lu, J. Sim, J. Suzuki +2 more·Apr 6, 2020
With the current interest in building quantum computers, there is a strong need for accurate and efficient characterization of the noise in quantum gate implementations. A key measure of the performance of a quantum gate is the minimum gate fidelity,...
T-count and Qubit Optimized Quantum Circuit Designs of Carry Lookahead Adder
H. Thapliyal, Edgard Muñoz-Coreas, Vladislav Khalus·Apr 4, 2020
Quantum circuits of arithmetic operations such as addition are needed to implement quantum algorithms in hardware. Quantum circuits based on Clifford+T gates are used as they can be made tolerant to noise. The tradeoff of gaining fault tolerance from...
Implementation of Geometric Quantum Gates on Microwave‐Driven Semiconductor Charge Qubits
Chengxian Zhang, Tao Chen, Xin Wang +1 more·Apr 1, 2020
A semiconductor‐based charge qubit, confined in double quantum dots, can be a platform to implement quantum computing. However, it suffers severely from charge noises. Here, a theoretical framework to implement universal geometric quantum gates in th...
Fluctuation-enhanced quantum metrology.
Yu Chen, Hongzhen Chen, Jing Liu +2 more·Mar 29, 2020
The main obstacle for practical quantum technology is the noise, which can induce the decoherence and destroy the potential quantum advantages. The fluctuation of a field, which induces the dephasing of the system, is one of the most common noises an...