Quantum Brain

Papers

Live trends in quantum computing research, updated daily from arXiv.

Total Papers

28,582

This Month

299

Today

0

Research Volume

13,639 papers in 12 months (-16% vs prior quarter)

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Papers by research theme (12 months). Hover for details.

Qubit Platforms

Hardware platform mentions in abstractsPhotonic leads

6,294 papers found

Programming the full stack of an open-access quantum computer

V. Frey, R. Rademacher, Elijah Durso-Sabina +5 more·Jun 11, 2021

We present a new quantum programming language called"Quala"that enables true full-stack programming of quantum hardware. Quala allows seamless integration of abstraction layers such as the digital circuit layer and the analog control pulse waveform l...

Physics

On Applying the Lackadaisical Quantum Walk Algorithm to Search for Multiple Solutions on Grids

J. Carvalho, L. Souza, F. M. P. Neto +1 more·Jun 11, 2021

Quantum computing promises to improve the information processing power to levels unreachable by classical computation. Quantum walks are heading the development of quantum algorithms for searching information on graphs more efficiently than their cla...

Computer SciencePhysics

Defect-Free Arbitrary-Geometry Assembly of Mixed-Species Atom Arrays.

Cheng Sheng, Jiayi Hou, Xiaodong He +8 more·Jun 11, 2021

Optically trapped mixed-species single atom arrays with arbitrary geometry are an attractive and promising platform for various applications, because tunable quantum systems with multiple components provide extra degrees of freedom for experimental c...

MedicinePhysics

Quantum Architecture Search with Meta‐Learning

Zhimin He, Chuangtao Chen, Lvzhou Li +2 more·Jun 11, 2021

Variational quantum algorithms (VQAs) have been successfully applied to quantum approximate optimization algorithms, variational quantum compiling and quantum machine learning models. The performances of VQAs largely depend on the architecture of par...

Physics

A quantum-inspired approach to exploit turbulence structures

Nikita Gourianov, M. Lubasch, S. Dolgov +5 more·Jun 10, 2021

Understanding turbulence is key to our comprehension of many natural and technological flow processes. At the heart of this phenomenon lies its intricate multiscale nature, describing the coupling between different-sized eddies in space and time. Her...

PhysicsMedicineComputer Science

Perturbative Quantum Simulation.

Jinzhao Sun, Suguru Endo, Hui-wen Lin +3 more·Jun 10, 2021

Approximation based on perturbation theory is the foundation for most of the quantitative predictions of quantum mechanics, whether in quantum many-body physics, chemistry, quantum field theory, or other domains. Quantum computing provides an alterna...

MedicinePhysics

Variational Quantum-Neural Hybrid Eigensolver.

Shi-Xin Zhang, Z. Wan, Chee-Kong Lee +3 more·Jun 9, 2021

The variational quantum eigensolver (VQE) is one of the most representative quantum algorithms in the noisy intermediate-scale quantum (NISQ) era, and is generally speculated to deliver one of the first quantum advantages for the ground-state simulat...

PhysicsMedicine

ArQTiC: A Full-stack Software Package for Simulating Materials on Quantum Computers

Lindsay Bassman Oftelie, Connor Powers, W. D. de Jong·Jun 9, 2021

ArQTiC is an open-source, full-stack software package built for the simulations of materials on quantum computers. It currently can simulate materials that can be modeled by any Hamiltonian derived from a generic, one-dimensional, time-dependent Heis...

Computer SciencePhysics

Partonic collinear structure by quantum computing

Tianyin Li, Xingyu Guo, W. K. Lai +5 more·Jun 7, 2021

We present a systematic quantum algorithm, which integrates both the hadronic state preparation and the evaluation of real-time light-front correlators, to study parton distribution functions (PDFs). As a proof of concept, we demonstrate the first di...

Physics

Simulating a measurement-induced phase transition for trapped-ion circuits

Stefanie Czischek, G. Torlai, Sayonee Ray +2 more·Jun 7, 2021

The rise of programmable quantum devices has motivated the exploration of circuit models which could realize novel physics. A promising candidate is a class of hybrid circuits, where entangling unitary dynamics compete with disentangling measurements...

Physics

What the foundations of quantum computer science teach us about chemistry.

J. McClean, N. Rubin, Joonho Lee +5 more·Jun 7, 2021

With the rapid development of quantum technology, one of the leading applications that has been identified is the simulation of chemistry. Interestingly, even before full scale quantum computers are available, quantum computer science has exhibited a...

PhysicsMedicine

Evaluating low-depth quantum algorithms for time evolution on fermion-boson systems

Nathan Fitzpatrick, H. Apel, D. M. Ramo·Jun 7, 2021

Simulating time evolution of quantum systems is one of the most promising applications of quantum computing and also appears as a subroutine in many applications such as Green's function methods. In the current era of NISQ machines we assess the stat...

Physics

Variational Hamiltonian simulation for translational invariant systems via classical pre-processing

Refik Mansuroglu, T. Eckstein, Ludwig Nützel +2 more·Jun 7, 2021

The simulation of time evolution of large quantum systems is a classically challenging and in general intractable task, making it a promising application for quantum computation. A Trotter–Suzuki approximation yields an implementation thereof, where ...

Physics

Quantum Optimization via Four-Body Rydberg Gates.

Clemens Dlaska, K. Ender, G. Mbeng +3 more·Jun 4, 2021

A large ongoing research effort focuses on obtaining a quantum advantage in the solution of combinatorial optimization problems on near-term quantum devices. A particularly promising platform implementing quantum optimization algorithms are arrays of...

PhysicsMedicine

Experimental error mitigation using linear rescaling for variational quantum eigensolving with up to 20 qubits

Eliot Rosenberg, P. Ginsparg, P. McMahon·Jun 2, 2021

Quantum computers have the potential to help solve a range of physics and chemistry problems, but noise in quantum hardware currently limits our ability to obtain accurate results from the execution of quantum-simulation algorithms. Various methods h...

Physics

Z3 gauge theory coupled to fermions and quantum computing

Ronak Desai, Yuan Feng, Mohammad Hassan +2 more·Jun 1, 2021

We study the Z3 gauge theory with fermions on the quantum computer using the Variational Quantum Eigensolver (VQE) algorithm with IBM QISKit software. Using up to 9 qubits we are able to obtain accurate results for the ground state energy. Introducin...

Physics

Designing Calibration and Expressivity-Efficient Instruction Sets for Quantum Computing

Prakash Murali, L. Lao, M. Martonosi +1 more·Jun 1, 2021

Near-term quantum computing (QC) systems have limited qubit counts, high gate (instruction) error rates, and typically support a minimal instruction set having one type of two-qubit gate (2Q). To reduce program instruction counts and improve applicat...

Computer SciencePhysics

State transfer with separable optical beams and variational quantum algorithms with classical light

Sooryansh Asthana, V. Ravishankar·Jun 1, 2021

Classical electromagnetic fields and quantum mechanics– both obey the principle of superposition alike. This opens up many avenues for simulation of a large variety of phenomena and algorithms, which have hitherto been considered quantum mechanical. ...

Physics

A comparison of various classical optimizers for a variational quantum linear solver

Aidan Pellow-Jarman, I. Sinayskiy, A. Pillay +1 more·Jun 1, 2021

Variational hybrid quantum classical algorithms are a class of quantum algorithms intended to run on noisy intermediate-scale quantum (NISQ) devices. These algorithms employ a parameterized quantum circuit (ansatz) and a quantum-classical feedback lo...

PhysicsComputer Science

Towards Solving the Bcs Hamiltonian Gap in Near-Term Quantum Computers

Nahum S'a, I. S. Oliveira, I. Roditi·May 31, 2021

In this work, using a NISQ framework, we obtain the gap of a BCS Hamiltonian. This could lead to interesting implications for superconductivity research. For such task, we choose to use the Variational Quantum Deflation and analyze the hardware restr...

Physics
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