Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
31,714
This Month
152
Today
0
Research Volume
15,749 papers in 12 months (-37% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Logical Clifford Synthesis for Stabilizer Codes
Narayanan Rengaswamy, R. Calderbank, S. Kadhe +1 more·Jun 30, 2019
Quantum error-correcting codes are used to protect qubits involved in quantum computation. This process requires logical operators to be translated into physical operators acting on physical quantum states. In this article, we propose a mathematical ...
Variational Quantum Circuits for Deep Reinforcement Learning
Samuel Yen-Chi Chen, Chao-Han Huck Yang, Jun Qi +3 more·Jun 30, 2019
The state-of-the-art machine learning approaches are based on classical von Neumann computing architectures and have been widely used in many industrial and academic domains. With the recent development of quantum computing, researchers and tech-gian...
Speeding up adiabatic passage with an optimal modified Roland–Cerf protocol
D. Stefanatos, E. Paspalakis·Jun 29, 2019
In this article we propose a novel method to accelerate adiabatic passage in a two-level system with only longitudinal field (detuning) control, while the transverse field is kept constant. The suggested method is a modification of the Roland–Cerf pr...
The Engineering of Software-Defined Quantum Key Distribution Networks
A. Aguado, V. López, D. López +5 more·Jun 29, 2019
Quantum computers will change the cryptographic panorama. A technology once believed to lie far away in the future is increasingly closer to real-world applications. Quantum computers will break the algorithms used in our public key infrastructure an...
TensorNetwork on TensorFlow: Entanglement Renormalization for quantum critical lattice models
M. Ganahl, A. Milsted, Stefan Leichenauer +2 more·Jun 28, 2019
We use TensorNetwork [C. Roberts et al., arXiv: 1905.01330], a recently developed API for performing tensor network contractions using accelerated backends such as TensorFlow, to implement an optimization algorithm for the Multi-scale Entanglement Re...
Identification of Time-varying in situ Signals in Quantum Circuits
Xi Cao, Yu-xi Liu, Rebing Wu·Jun 28, 2019
The identification of time-varying in situ signals is crucial for characterizing the dynamics of quantum information processes placed in highly isolated environments. Under certain circumstances, they can be identified from time-resolved measurements...
Point processes with Gaussian boson sampling.
S. Jahangiri, J. Arrazola, N. Quesada +1 more·Jun 27, 2019
Random point patterns are ubiquitous in nature, and statistical models such as point processes, i.e., algorithms that generate stochastic collections of points, are commonly used to simulate and interpret them. We propose an application of quantum co...
Gluon field digitization for quantum computers
A. Alexandru, P. Bedaque, Siddhartha Harmalkar +3 more·Jun 27, 2019
Simulations of gauge theories on quantum computers require the digitization of continuous field variables. Digitization schemes that uses the minimum amount of qubits are desirable. We present a practical scheme for digitizing $SU(3)$ gauge theories ...
Resonant shortcuts for adiabatic rapid passage with only z -field control
D. Stefanatos, E. Paspalakis·Jun 27, 2019
In this work we derive ultrafast shortcuts for adiabatic rapid passage for a qubit where the only control variable is the longitudinal $z$ field, while the transverse $x$ field remains constant. This restrictive framework is pertinent to some importa...
Quantum walks as mathematical foundation for quantum gates
D. Solenov·Jun 27, 2019
It is demonstrated that in gate-based quantum computing architectures quantum walk is a natural mathematical description of quantum gates. It originates from field-matter interaction driving the system, but is not attached to specific qubit designs a...
Reachability Deficits in Quantum Approximate Optimization
V. Akshay, H. Philathong, Mauro E. S. Morales +1 more·Jun 27, 2019
The quantum approximate optimization algorithm (QAOA) has rapidly become a cornerstone of contemporary quantum algorithm development. Despite a growing range of applications, only a few results have been developed towards understanding the algorithm'...
Quantum Phase Estimation with Time‐Frequency Qudits in a Single Photon
Hsuan-Hao Lu, Zixuan Hu, Mohammed S. Alshaykh +5 more·Jun 27, 2019
The Phase Estimation Algorithm (PEA) is an important quantum algorithm used independently or as a key subroutine in other quantum algorithms. Currently most implementations of the PEA are based on qubits, where the computational units in the quantum ...
Hardware-Efficient Quantum Random Access Memory with Hybrid Quantum Acoustic Systems.
Connor T. Hann, Chang-ling Zou, Yaxing Zhang +4 more·Jun 27, 2019
Hybrid quantum systems in which acoustic resonators couple to superconducting qubits are promising quantum information platforms. High quality factors and small mode volumes make acoustic modes ideal quantum memories, while the qubit-phonon coupling ...
Near-Optimal Error Correcting Code For Ternary Quantum Systems
Ritajit Majumdar, Shridhar Dudam, S. Sur-Kolay +2 more·Jun 26, 2019
Multi-valued quantum systems can store more information than binary ones for a given number of quantum states. For reliable operation of multi-valued quantum systems, error correction is mandated. In this paper, we propose a 6-qutrit quantum error co...
Iterative qubit coupled cluster method: A systematic approach to the full-CI limit in quantum chemistry calculations on NISQ devices
I. G. Ryabinkin, Scott N. Genin·Jun 26, 2019
Noisy intermediate-scale quantum (NISQ) devices is the current realm of quantum computing. To exploit their limited powers to full extent it is imperative to develop suitable algorithms. We present the iterative qubit coupled cluster (iQCC) method ai...
Optimizing the Spin Reversal Transform on the D-Wave 2000Q
Elijah Pelofske, Georg Hahn, H. Djidjev·Jun 26, 2019
Commercial quantum annealers from D-Wave Systems make it possible to obtain approximate solutions of high quality for certain NP-hard problems in nearly constant time. Before solving a problem on D-Wave, several pre-processing methods can be applied,...
Quantum speedup of branch-and-bound algorithms
A. Montanaro·Jun 25, 2019
Branch-and-bound is a widely used technique for solving combinatorial optimisation problems where one has access to two procedures: a branching procedure that splits a set of potential solutions into subsets, and a cost procedure that determines a lo...
A spin-photon interface using charge-tunable quantum dots strongly coupled to a cavity.
Zhouchen Luo, Shuo Sun, A. Karasahin +5 more·Jun 25, 2019
Charged quantum dots containing an electron or hole spin are bright solid-state qubits suitable for quantum networks and distributed quantum computing. Incorporating such quantum dot spin into a photonic crystal cavity creates a strong spin-photon in...
Beyond the Swap Test: Optimal Estimation of Quantum State Overlap.
Marco Fanizza, M. Rosati, M. Skotiniotis +2 more·Jun 25, 2019
We study the estimation of the overlap between two unknown pure quantum states of a finite-dimensional system, given M and N copies of each type. This is a fundamental primitive in quantum information processing that is commonly accomplished from the...
Matrix product state algorithms for Gaussian fermionic states
N. Schuch, B. Bauer·Jun 25, 2019
While general quantum many-body systems require exponential resources to be simulated on a classical computer, systems of non-interacting fermions can be simulated exactly using polynomially scaling resources. Such systems may be of interest in their...