Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,548
This Month
1,041
Today
0
Research Volume
12,907 papers in 12 months (-5% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Cryogenic microwave loss in epitaxial Al/GaAs/Al trilayers for superconducting circuits
C. McRae, A. McFadden, R. Zhao +7 more·Sep 21, 2020
Epitaxially grown superconductor/dielectric/superconductor trilayers have the potential to form high-performance superconducting quantum devices and may even allow scalable superconducting quantum computing with low-surface-area qubits such as the me...
Universal Approximation Property of Quantum Machine Learning Models in Quantum-Enhanced Feature Spaces.
Takahiro Goto, Q. Tran, K. Nakajima·Sep 1, 2020
Encoding classical data into quantum states is considered a quantum feature map to map classical data into a quantum Hilbert space. This feature map provides opportunities to incorporate quantum advantages into machine learning algorithms to be perfo...
Geometrical Formalism for Dynamically Corrected Gates in Multiqubit Systems
Donovan Buterakos, Sankar Das Sarma, Edwin Barnes·Jul 30, 2020
The ability to perform gates in multiqubit systems that are robust to noise is of crucial importance for the advancement of quantum information technologies. However, finding control pulses that cancel noise while performing a gate is made difficult ...
Noise-induced barren plateaus in variational quantum algorithms
Samson Wang, Enrico Fontana, M. Cerezo +4 more·Jul 28, 2020
Variational Quantum Algorithms (VQAs) may be a path to quantum advantage on Noisy Intermediate-Scale Quantum (NISQ) computers. A natural question is whether noise on NISQ devices places fundamental limitations on VQA performance. We rigorously prove ...
Experimental implementation of leakage elimination operators.
B. G. Markaida, L. -A. Wu·Jul 9, 2020
Decoherence-induced leakage errors can potentially damage physical or logical qubits by coupling them to other system levels. Here we report the first experimental implementation of Leakage Elimination Operators (LEOs) that aims to reduce this underm...
A switching approach for perfect state transfer over a scalable and routing enabled network architecture with superconducting qubits
Siddhant Singh·Jul 3, 2020
We propose a hypercube switching architecture for the perfect state transfer (PST) where we prove that it is always possible to find an induced hypercube in any given hypercube of any dimension such that PST can be performed between any two given ver...
On Actual Preparation of Dicke State on a Quantum Computer
Chandra Sekhar Mukherjee, S. Maitra, V. Gaurav +1 more·Jul 3, 2020
The exact number of CNOT and single qubit gates needed to implement a Quantum Algorithm in a given architecture is one of the central problems of Quantum Computation. In this work we study the importance of concise realizations of Partially defined U...
Multifractal Dynamics of the QREM.
T. Parolini, Gianni Mossi·Jul 1, 2020
We study numerically the population transfer protocol on the Quantum Random Energy Model and its relation to quantum computing, for system sizes of $n\leq 20$ quantum spins. We focus on the energy matching problem, i.e. finding multiple approximate s...
Optimizing adiabatic quantum pathways via a learning algorithm
Xiaodong Yang, Ran Liu, Jun Li +1 more·Jun 27, 2020
Designing proper time-dependent control fields for slowly varying the system to the ground state that encodes the problem solution is crucial for adiabatic quantum computation. However, inevitable perturbations in real applications demand us to accel...
Quantum Amplitude Estimation in the Presence of Noise
Eric G. Brown, O. Goktas, W. Tham·Jun 25, 2020
Quantum Amplitude Estimation (QAE) -- a technique by which the amplitude of a given quantum state can be estimated with quadratically fewer queries than by standard sampling -- is a key sub-routine in several important quantum algorithms, including G...
Majorana-induced DC Shapiro steps in topological Josephson junctions
Sang-Jun Choi, A. Calzona, B. Trauzettel·Jun 10, 2020
The demonstration of the non-Abelian properties of Majorana bound states (MBS) is a crucial step toward topological quantum computing. We theoretically investigate how Majorana fusion rules manifest themselves in the current-voltage characteristics o...
Quantum Probabilistic Spaces on Graphs for Topological Evolutions
R. Balu·May 16, 2020
We start with the consideration of fusion rules of anyonic particles evolving on a 2D surface and the a hypergroup comes with it to construct entangled quantum Markov chains. The fusion rules induce an association scheme with Krein parameters and the...
Generating Randomness from a Computable, Non-random Sequence of Qubits
Tejas Bhojraj·May 1, 2020
Nies and Scholz introduced the notion of a state to describe an infinite sequence of qubits and defined quantum-Martin-Lof randomness for states, analogously to the well known concept of Martin-Lof randomness for elements of Cantor space (the space o...
Qubit Mapping Based on Subgraph Isomorphism and Filtered Depth-Limited Search
Sanjiang Li, Xiang-Yu Zhou, Yuan Feng·Apr 15, 2020
Mapping logical quantum circuits to Noisy Intermediate-Scale Quantum (NISQ) devices is a challenging problem which has attracted rapidly increasing interests from both quantum and classical computing communities. This article proposes an efficient me...
Digital quantum simulation of molecular dynamics and control
Alicia B. Magann, Matthew D. Grace, H. Rabitz +1 more·Feb 28, 2020
Optimally-shaped electromagnetic fields have the capacity to coherently control the dynamics of quantum systems, and thus offer a promising means for controlling molecular transformations relevant to chemical, biological, and materials applications. ...
Alibaba Cloud Quantum Development Platform: Surface Code Simulations with Crosstalk
Cupjin Huang, Xiaotong Ni, Fang Zhang +11 more·Feb 20, 2020
We report, in a sequence of notes, our work on the Alibaba Cloud Quantum Development Platform (AC-QDP). AC-QDP provides a set of tools for aiding the development of both quantum computing algorithms and quantum processors, and is powered by a large-s...
Performance of real-time adaptive optics compensation in a turbulent channel with high-dimensional spatial-mode encoding.
Jiapeng Zhao, Yiyu Zhou, B. Braverman +6 more·Feb 14, 2020
The orbital angular momentum (OAM) of photons is a promising degree of freedom for high-dimensional quantum key distribution (QKD). However, effectively mitigating the adverse effects of atmospheric turbulence is a persistent challenge in OAM QKD sys...
Local vibrational modes of Si vacancy spin qubits in SiC
Z. Shang, A. Hashemi, Y. Berencén +6 more·Feb 1, 2020
Silicon carbide is a very promising platform for quantum applications because of the extraordinary spin and optical properties of point defects in this technologically friendly material. These properties are strongly influenced by crystal vibrations,...
Enhancing a Near-Term Quantum Accelerator's Instruction Set Architecture for Materials Science Applications
X. Zou, A. Matsuura, S. Premaratne +7 more·Jan 28, 2020
Quantum computers with tens to hundreds of noisy qubits are being developed today. To be useful for real-world applications, we believe that these near-term systems cannot simply be scaled-down non-error-corrected versions of future fault-tolerant la...
Eliminating Leakage Errors in Hyperfine Qubits.
D. Hayes, D. Stack, B. Bjork +3 more·Dec 31, 2019
Population leakage outside the qubit subspace presents a particularly harmful source of error that cannot be handled by standard error correction methods. Using a trapped ^{171}Yb^{+} ion, we demonstrate an optical pumping scheme to suppress leakage ...