Papers

Yi-Long Yang, J. Cirac, M. Bañuls·Apr 20, 2022

We investigate quantum inspired algorithms to compute physical observables of quantum many-body systems at finite energies. They are based on the quantum algorithms proposed in [Lu et al. PRX Quantum 2, 020321 (2021)], which use the quantum simulatio...

Cristina Cîrstoiu, Silas Dilkes, Daniel Mills +2 more·Apr 20, 2022

The detrimental effect of noise accumulates as quantum computers grow in size. In the case where devices are too small or noisy to perform error correction, error mitigation may be used. Error mitigation does not increase the fidelity of quantum stat...

N. Miller·Apr 19, 2022

Currently, optical technology impacts most of our lives, from light used in scientific measurement to the fiber optic cables that makeup the backbone of the internet. However, as our current optical infrastructure grows, we discover that these techno...

M. S. Alam, S. Belomestnykh, N. Bornman +37 more·Apr 19, 2022

Quantum information science harnesses the principles of quantum mechanics to realize computational algorithms with complexities vastly intractable by current computer platforms. Typical applications range from quantum chemistry to optimization proble...

J. Cochran, IV C.S.Guzmán, E. Stiers +1 more·Apr 19, 2022

Pulsed readout of Direct Current (DC) Superconducting Quantum Interference Device (SQUID) is crucial for experiments which need to be performed at millikelvin temperatures, such as the readout of superconducting and electron spin based qubits. Pulsed...

Alfred Godley, M. Guţă·Apr 19, 2022

Continuous-time measurements are instrumental for a multitude of tasks in quantum engineering and quantum control, including the estimation of dynamical parameters of open quantum systems monitored through the environment. However, such measurements ...

Ryo Asaka, K. Sakai, Ryoko Yahagi·Apr 19, 2022

This is the second paper in a series of two. Using a multi-particle continuous-time quantum walk with two internal states, which has been formulated in the first paper (arXiv:2112.08119), we physically implement a quantum random access memory (qRAM)....

Tyler Chen, Yu-Chen Cheng·Apr 18, 2022

We describe a numerical algorithm for approximating the equilibrium-reduced density matrix and the effective (mean force) Hamiltonian for a set of system spins coupled strongly to a set of bath spins when the total system (system + bath) is held in c...

Gregory Boyd, Bálint Koczor·Apr 18, 2022

Exploiting near-term quantum computers and achieving practical value is a considerable and exciting challenge. Most prominent candidates as variational algorithms typically aim to find the ground state of a Hamiltonian by minimising a single classica...

Md. Nurul Muttakin·Apr 18, 2022

To run a quantum program in the real device, the compiler maps the logical qubits to physical qubits. This is the most crucial step of compiling a quantum circuit. Because the fidelity of a quantum circuit depends heavily on this mapping process. How...

Álvaro M. Alhambra·Apr 18, 2022

The thermal or equilibrium ensemble is one of the most ubiquitous states of matter. For models comprised of many locally interacting quantum particles, it describes a wide range of physical situations, relevant to condensed matter physics, high energ...

E. Meirom, Haggai Maron, Shie Mannor +1 more·Apr 18, 2022

Quantum Computing (QC) stands to revolutionize computing, but is currently still limited. To develop and test quantum algorithms today, quantum circuits are often simulated on classical computers. Simulating a complex quantum circuit requires computi...

M. Khazali·Apr 18, 2022

To bring the quantum computing capacities to the personal edge devices, the optimum approach is to have simple non-error corrected personal devices that offload the computational tasks to scalable quantum computers via edge servers with cryogenic com...

Navid Abapour, M. Ebadpour·Apr 17, 2022

In recent years, establishing secure visual communications has turned into one of the essential problems for security engineers and researchers. However, only limited novel solutions are provided for image encryption, and limiting the visual cryptogr...

Harashta Tatimma Larasati, D. Putranto, Rini Wisnu Wardhani +1 more·Apr 16, 2022

Works on quantum computing and cryptanalysis has increased significantly in the past few years. Various constructions of quantum arithmetic circuits, as one of the essential components in the field, has also been proposed. However, there has only bee...

Timothy Proctor, Stefan Seritan, Erik Nielsen +4 more·Apr 15, 2022

Quantum computing hardware has grown sufficiently complex that it often can no longer be simulated by classical computers, but its computational power remains limited by errors. These errors corrupt the results of quantum algorithms, and it is no lon...

D. Fernández-Fernández, Y. Ban, G. Platero·Apr 15, 2022

Hole spin qubits in semiconductor quantum dots (QDs) are promising candidates for quantum information processing due to their weak hyperfine coupling to nuclear spins, and to the strong spin-orbit coupling which allows for rapid operation time. We pr...

Juliane Mueller, W. Lavrijsen, Costin Iancu +1 more·Apr 15, 2022

Hybrid variational quantum algorithms, which combine a classical optimizer with evaluations on a quantum chip, are the most promising candidates to show quantum advantage on current noisy, intermediate-scale quantum (NISQ) devices. The classical opti...

Yuxiang Peng, Kesha Hietala, Runzhou Tao +4 more·Apr 14, 2022

Significance While hardware errors have garnered significant attention as the major obstacle to quantum computing, the error due to human factors in the implementation is less recognized. This paper identifies human programming errors as another impo...

Sitan Chen, Brice Huang, Jungshian Li +1 more·Apr 14, 2022

We consider the problem of quantum state certification, where we are given the description of a mixed state $\sigma\in\mathbb{C}^{d\times d},n$ copies of a mixed state $\rho\in\mathbb{C}^{d\times d}$, and $\varepsilon\gt 0$, and we are asked to deter...