Quantum Brain

Papers

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

Total Papers

28,807

This Month

482

Today

0

Research Volume

13,821 papers in 12 months (-12% vs prior quarter)

Research Focus Areas

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

Qubit Platforms

Hardware platform mentions in abstractsPhotonic leads

28,807 papers found

Fault-tolerant optical interconnects for neutral-atom arrays

Josiah Sinclair, Joshua Ramette, Brandon Grinkemeyer +3 more·Aug 16, 2024

We analyze the use of photonic links to enable large-scale fault-tolerant connectivity of locally error-corrected modules based on neutral atom arrays. Our approach makes use of recent theoretical results showing the robustness of surface codes to bo...

Physics

Experiments with the four-dimensional surface code on a quantum charge-coupled device quantum computer

Noah F. Berthusen, J. Dreiling, C. Foltz +9 more·Aug 16, 2024

Single-shot quantum error correction has the potential to speed up quantum computations by removing the need for multiple rounds of syndrome extraction in order to be fault-tolerant. Using Quantinuum's H2 trapped-ion quantum computer, we implement th...

Physics

A Comprehensive Review of Quantum Circuit Optimization: Current Trends and Future Directions

Krishnageetha Karuppasamy, Varun Puram, Stevens Johnson +1 more·Aug 16, 2024

Optimizing quantum circuits is critical for enhancing computational speed and mitigating errors caused by quantum noise. Effective optimization must be achieved without compromising the correctness of the computations. This survey explores recent adv...

PhysicsComputer Science

Quantum Algorithm for Jaccard Similarity

Varun Puram, Ruthvik Rao Bobbili, Johnson P. Thomas·Aug 16, 2024

Jaccard Similarity is a very common proximity measurement used to compute the similarity between two asymmetric binary vectors. Jaccard Similarity is the ratio between the 1s (Intersection of two vectors) to 1s (Union of two vectors). This paper intr...

Computer Science

Bee-yond the Plateau: Training QNNs with Swarm Algorithms

Rubén Darío Guerrero·Aug 16, 2024

In the quest to harness the power of quantum computing, training quantum neural networks (QNNs) presents a formidable challenge. This study introduces an innovative approach, integrating the Bees Optimization Algorithm (BOA) to overcome one of the mo...

MedicinePhysicsComputer Science

Quantum random power method for ground state computation

Taehee Ko, Hyowon Park, Sangkook Choi·Aug 16, 2024

We present a quantum-classical hybrid random power method that approximates a ground state of a Hamiltonian. The quantum part of our method computes a fixed number of elements of a Hamiltonian-matrix polynomial via quantum polynomial filtering techni...

PhysicsComputer ScienceMathematics

Accelerating Spectral Clustering on Quantum and Analog Platforms

Xingzi Xu, T. Sahai·Aug 16, 2024

We introduce a novel hybrid quantum–analog algorithm to perform a graph clustering that exploits connections between the evolution of dynamical systems on graphs and the underlying graph spectra. This approach constitutes a new class of algorithms th...

Computer ScienceMathematics

A novel quantum algorithm for efficient attractor search in gene regulatory networks

M. Rossini, Felix M. Weidner, J. Ankerhold +1 more·Aug 16, 2024

Summary Describing gene interactions in cells is challenging due to their complexity and the limited microscopic detail available. Boolean networks offer a powerful, coarse-grained approach to modeling these dynamics using binary agents and their int...

MedicinePhysicsComputer ScienceBiology

Local quantum channels giving rise to quasi-local Gibbs states

I. Arad, Raz Firanko, O. Gurevich·Aug 16, 2024

We study the steady-state properties of quantum channels with local Kraus operators. We consider a large family that consists of general ergodic 1-local (non-interacting) terms and general 2-local (interacting) terms. Physically, a repeated applicati...

PhysicsMathematics

On the Constant Depth Implementation of Pauli Exponentials

Ioana Moflic, Alexandru Paler·Aug 15, 2024

We decompose, under the very restrictive linear nearest-neighbour connectivity, $Z^{\otimes n}$ exponentials of arbitrary length into circuits of constant depth using $\mathcal{O}(n)$ ancillae and two-body XX and ZZ interactions. Consequently, a simi...

Quantum Physics

Quantum-Classical Hybrid Algorithm for Solving the Learning-With-Errors Problem on NISQ Devices

Muxi Zheng, Jinfeng Zeng, Wentao Yang +7 more·Aug 15, 2024

The Learning-With-Errors (LWE) problem is a fundamental computational challenge with implications for post-quantum cryptography and computational learning theory. Here we propose a quantum-classical hybrid algorithm with Ising model to address LWE, t...

Quantum PhysicsMathematical Physics

From Entanglement Purification Scheduling to Fidelity-constrained Multi-Flow Routing

Ziyue Jia, Lin Chen·Aug 15, 2024

Recently emerged as a disruptive networking paradigm, quantum networks rely on the mysterious quantum entanglement to teleport qubits without physically transferring quantum particles. However, the state of quantum systems is extremely fragile due to...

Computer SciencePhysics

Minimum synthesis cost of CNOT circuits

Alan Bu, Evan Fan, Robert Joo·Aug 15, 2024

Optimizing the size and depth of CNOT circuits is an active area of research in quantum computing and is particularly relevant for circuits synthesized from the Clifford + T universal gate set. Although many techniques exist for finding short synthes...

Computer SciencePhysicsMathematics

Bayesian retrodiction of quantum supermaps

Ge Bai·Aug 15, 2024

The Petz map has been established as a quantum version of the Bayes'rule. It unifies the conceptual belief update rule of a quantum state observed after a forward quantum process, and the operational reverse process that recovers the final state to m...

Physics

Quantum enhanced Markov chains require fine-tuned quenches

Alev Orfi, Dries Sels·Aug 15, 2024

Quantum-enhanced Markov chain Monte Carlo, an algorithm in which configurations are proposed through a measured quantum quench and accepted or rejected by a classical algorithm, has been proposed as a possible method for robust quantum speedup on imp...

Physics

A quantum approximate optimization method for finding Hadamard matrices

A. B. Suksmono·Aug 15, 2024

Finding a Hadamard matrix of a specific order using a quantum computer can lead to a demonstration of practical quantum advantage. Earlier efforts using a quantum annealer were impeded by the limitations of the present quantum resource and its capabi...

PhysicsMedicine

Universal neutral-atom quantum computer with individual optical addressing and non-destructive readout

A. G. Radnaev, W. C. Chung, D. Cole +55 more·Aug 15, 2024

Quantum computers must achieve large-scale, fault-tolerant operation to deliver on their promise of transformational processing power [1-4]. This will require thousands or millions of high-fidelity quantum gates and similar numbers of qubits [5]. Dem...

Physics

Coqa: Blazing Fast Compiler Optimizations for QAOA

Yuchen Zhu, Yidong Zhou, Jinglei Cheng +4 more·Aug 15, 2024

The Quantum Approximate Optimization Algorithm (QAOA) is one of the most promising candidates for achieving quantum advantage over classical computers. However, existing compilers lack specialized methods for optimizing QAOA circuits. There are circu...

Physics

Quantum Rational Transformation Using Linear Combinations of Hamiltonian Simulations

Yizhi Shen, Niel Van Buggenhout, Daan Camps +2 more·Aug 14, 2024

Rational functions are exceptionally powerful tools in scientific computing, yet their abilities to advance quantum algorithms remain largely untapped. In this paper, we introduce effective implementations of rational transformations of a target oper...

Quantum Physics

Steady-state entanglement of interacting masses in free space through optimal feedback control

Klemens Winkler, Anton V. Zasedatelev, Benjamin A. Stickler +3 more·Aug 14, 2024

We develop a feedback strategy based on optimal quantum feedback control for Gaussian systems to maximise the likelihood of steady-state entanglement detection between two directly interacting masses. We employ linear quadratic Gaussian (LQG) control...

Quantum Physics
Quantum Intelligence

Ask about quantum research, companies, or market developments.