Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Escaping barren plateaus in approximate quantum compiling
Niall F. Robertson, A. Akhriev, J. Vala +1 more·Oct 17, 2022
Quantum compilation provides a method to translate quantum algorithms at a high level of abstraction into their implementations as quantum circuits on real hardware. One approach to quantum compiling is to design a parameterised circuit and to use te...
Non-Hermitian ground-state-searching algorithm enhanced by a variational toolbox
Yu-Qin Chen, Shi-Xin Zhang, Chang-Yu Hsieh +1 more·Oct 17, 2022
Ground-state preparation for a given Hamiltonian is a common quantum-computing task of great importance and has relevant applications in quantum chemistry, computational material modeling, and combinatorial optimization. We consider an approach to si...
A compiler for universal photonic quantum computers
F. Zilk, Korbinian Staudacher, T. Guggemos +3 more·Oct 17, 2022
Photons are a natural resource in quantum information, and the last decade showed significant progress in high-quality single photon generation and detection. Furthermore, photonic qubits are easy to manipulate and do not require particularly strongl...
On Optimal Subarchitectures for Quantum Circuit Mapping
Tom Peham, Lukas Burgholzer, R. Wille·Oct 17, 2022
Compiling a high-level quantum circuit down to a low-level description that can be executed on state-of-the-art quantum computers is a crucial part of the software stack for quantum computing. One step in compiling a quantum circuit to some device is...
A modular quantum-classical framework for simulating chemical reaction pathways accurately
R. NirmalM., Shampa Sarkar, M. Nambiar +1 more·Oct 17, 2022
A lot of progress has been made in recent times for simulating accurately the ground state energy of small molecules and their potential energy surface, using quantum-classical hybrid computing architecture. While these single point energy calculatio...
Realizing quantum gates with optically-addressable $^{171}$Yb$^{+}$ ion qudits
M. Aksenov, I. Zalivako, I. Semerikov +6 more·Oct 17, 2022
The use of multilevel information carriers, also known as qudits, is a promising path for exploring scalability of quantum computing devices. Here we present a proof-of-principle realization of a quantum processor register that uses optically-address...
Improved Iterative Quantum Algorithm for Ground‐State Preparation
Jin‐Min Liang, Qiao-Qiao Lv, Shuqian Shen +3 more·Oct 16, 2022
Finding the ground state of a Hamiltonian system is of great significance in many‐body quantum physics and quantum chemistry. An improved iterative quantum algorithm to prepare the ground state of a Hamiltonian is proposed. The crucial point is to op...
Multi-Neutrino Entanglement and Correlations in Dense Neutrino Systems.
Marc Illa, M. Savage·Oct 16, 2022
The time evolution of multi-neutrino entanglement and correlations are studied in two-flavor collective neutrino oscillations, relevant for dense neutrino environments, building upon previous works. Specifically, simulations performed of systems with...
Quantum Fourier Transform Has Small Entanglement
Jielun Chen, E. Stoudenmire, S. White·Oct 16, 2022
The Quantum Fourier Transform (QFT) is a key component of many important quantum algorithms, most famously as being the essential ingredient in Shor's algorithm for factoring products of primes. Given its remarkable capability, one would think it can...
Automated quantum error mitigation based on probabilistic error reduction
Ben T. McDonough, A. Mari, Nathan Shammah +4 more·Oct 16, 2022
Current quantum computers suffer from a level of noise that prohibits extracting useful results directly from longer computations. The figure of merit in many near-term quantum algorithms is an expectation value measured at the end of the computation...
Error-correcting codes for fermionic quantum simulation
Yu-An Chen, A. Gorshkov, Yijia Xu·Oct 16, 2022
Utilizing the framework of \mathbb{Z}_2ℤ2 lattice gauge theories in the context of Pauli stabilizer codes, we present methodologies for simulating fermions via qubit systems on a two-dimensional square lattice. We investigate the symplectic automorph...
Quantifying Quantum Computational Advantage on a Processor of Ultracold Atoms
Yong-Guang Zheng, Ying-Chao Shen, Wei-Yong Zhang +15 more·Oct 16, 2022
Nonequilibrium dynamics of quantum many-body systems is challenging for classical computing, providing opportunities for demonstrating practical quantum computational advantage with analogue quantum simulators. Owing to the intimate connection with a...
Simulating dirty bosons on a quantum computer
Lindsay Bassman Oftelie, Roel Van Beeumen, Daan Camps +2 more·Oct 15, 2022
Quantum computers hold the potential to unlock new discoveries in complex quantum systems by enabling the simulation of physical systems that have heretofore been impossible to implement on classical computers due to intractability. A system of parti...
Memory-Efficient Differentiable Programming for Quantum Optimal Control of Discrete Lattices
Xian Wang, Paul Kairys, S. Narayanan +2 more·Oct 15, 2022
Quantum optimal control problems are typically solved by gradient-based algorithms such as GRAPE, which suffer from exponential growth in storage with increasing number of qubits and linear growth in memory requirements with increasing number of time...
TopGen: Topology-Aware Bottom-Up Generator for Variational Quantum Circuits
Jinglei Cheng, Hanrui Wang, Zhiding Liang +3 more·Oct 15, 2022
Variational Quantum Algorithms (VQA) are promising to demonstrate quantum advantages on near-term devices. Designing ansatz, a variational circuit with parameterized gates, is of paramount importance for VQA as it lays the foundation for parameter op...
An ultra-high gain single-photon transistor in the microwave regime
Zhiling Wang, Zenghui Bao, Yan Li +9 more·Oct 15, 2022
A photonic transistor that can switch or amplify an optical signal with a single gate photon requires strong non-linear interaction at the single-photon level. Circuit quantum electrodynamics provides great flexibility to generate such an interaction...
A Secure Multiparty Quantum Least Common Multiple Computation Protocol
Zi-Xi Li, Wenjie Liu·Oct 15, 2022
In this paper, we present a secure multiparty computation (SMC) protocol for least common multiple (LCM) based on Shor's quantum period-finding algorithm (QPA). Our protocol is based on the following principle: the connection of multiple periodic fun...
Qubit-Reuse Compilation with Mid-Circuit Measurement and Reset
M. DeCross, E. Chertkov, Megan Kohagen +1 more·Oct 14, 2022
A number of commercially available quantum computers, such as those based on trapped-ion or superconducting qubits, can now perform mid-circuit measurements and resets. In addition to being crucial for quantum error correction, this capability can he...
Quantum Network Utility Maximization
Gayane Vardoyan, S. Wehner·Oct 14, 2022
Network Utility Maximization (NUM) is a mathe-matical framework that has endowed researchers with powerful methods for designing and analyzing classical communication protocols. NUM has also enabled the development of distributed algorithms for solvi...
Gibbs Sampling of Continuous Potentials on a Quantum Computer
Arsalan Motamedi, Pooya Ronagh·Oct 14, 2022
Gibbs sampling from continuous real-valued functions is a challenging problem of interest in machine learning. Here we leverage quantum Fourier transforms to build a quantum algorithm for this task when the function is periodic. We use the quantum al...