Paper – Quantum

Paper

Hybridized Methods for Quantum Simulation in the Interaction Picture

Abhishek Rajput, Alessandro Roggero, and Nathan Wiebe,

Quantum 6, 780 (2022).

Conventional methods of quantum simulation involve trade-offs that limit their applicability to specific contexts where their use is optimal. In particular, the interaction picture simulatio…

Paper

A no-go theorem on the nature of the gravitational field beyond quantum theory

Thomas D. Galley, Flaminia Giacomini, and John H. Selby,

Quantum 6, 779 (2022).

Recently, table-top experiments involving massive quantum systems have been proposed to test the interface of quantum theory and gravity. In particular, the crucial point of the debate is wh…

Paper

Three numerical approaches to find mutually unbiased bases using Bell inequalities

Maria Prat Colomer, Luke Mortimer, Irénée Frérot, Máté Farkas, and Antonio Acín,

Quantum 6, 778 (2022).

Mutually unbiased bases correspond to highly useful pairs of measurements in quantum information theory. In the smallest composite dimension, six, it is known that between three and seven mu…

Paper

Style-based quantum generative adversarial networks for Monte Carlo events

Carlos Bravo-Prieto, Julien Baglio, Marco Cè, Anthony Francis, Dorota M. Grabowska, and Stefano Carrazza,

Quantum 6, 777 (2022).

We propose and assess an alternative quantum generator architecture in the context of generative adversarial learning for Monte Carlo event generation, used to simulate particle physics proc…

Paper

Classical Shadows With Noise

Dax Enshan Koh and Sabee Grewal,

Quantum 6, 776 (2022).

The classical shadows protocol, recently introduced by Huang, Kueng, and Preskill [Nat. Phys. 16, 1050 (2020)], is a quantum-classical protocol to estimate properties of an unknown quantum s…

Paper

Coherent information of a quantum channel or its complement is generically positive

Satvik Singh and Nilanjana Datta,

Quantum 6, 775 (2022).

The task of determining whether a given quantum channel has positive capacity to transmit quantum information is a fundamental open problem in quantum information theory. In general, the coh…

Paper

Mitiq: A software package for error mitigation on noisy quantum computers

Ryan LaRose, Andrea Mari, Sarah Kaiser, Peter J. Karalekas, Andre A. Alves, Piotr Czarnik, Mohamed El Mandouh, Max H. Gordon, Yousef Hindy, Aaron Robertson, Purva Thakre, Misty Wahl, Danny Samuel, Rahul Mistri, Maxime Tremblay, Nick Gardner, Nathaniel T. Stemen, Nathan Shammah, and William J. Zeng,

Quantum 6, 774 (2022).

We introduce Mitiq, a Python package for error mitigation on noisy quantum computers. Error mitigation techniques can reduce the impact of noise on near-term quantum computers with minimal o…

Paper

Fast Black-Box Quantum State Preparation

Johannes Bausch,

Quantum 6, 773 (2022).

Quantum state preparation is an important ingredient for other higher-level quantum algorithms, such as Hamiltonian simulation, or for loading distributions into a quantum device to be used…

Paper

Deviation bounds and concentration inequalities for quantum noises

Tristan Benoist, Lisa Hänggli, and Cambyse Rouzé,

Quantum 6, 772 (2022).

We provide a stochastic interpretation of non-commutative Dirichlet forms in the context of quantum filtering. For stochastic processes motivated by quantum optics experiments, we derive an…

Paper

Security of quantum key distribution with detection-efficiency mismatch in the multiphoton case

Anton Trushechkin,

Quantum 6, 771 (2022).

Detection-efficiency mismatch is a common problem in practical quantum key distribution (QKD) systems. Current security proofs of QKD with detection-efficiency mismatch rely either on the as…

Paper

Towards Quantum Advantage in Financial Market Risk using Quantum Gradient Algorithms

Nikitas Stamatopoulos, Guglielmo Mazzola, Stefan Woerner, and William J. Zeng,

Quantum 6, 770 (2022).

We introduce a quantum algorithm to compute the market risk of financial derivatives. Previous work has shown that quantum amplitude estimation can accelerate derivative pricing quadraticall…

Paper

Measurement-based generation and preservation of cat and grid states within a continuous-variable cluster state

Miller Eaton, Carlos González-Arciniegas, Rafael N. Alexander, Nicolas C. Menicucci, and Olivier Pfister,

Quantum 6, 769 (2022).

We present an algorithm to reliably generate various quantum states critical to quantum error correction and universal continuous-variable (CV) quantum computing, such as Schrödinger cat sta…

Paper

TFermion: A non-Clifford gate cost assessment library of quantum phase estimation algorithms for quantum chemistry

Pablo A. M. Casares, Roberto Campos, and M. A. Martin-Delgado,

Quantum 6, 768 (2022).

Quantum Phase Estimation is one of the most useful quantum computing algorithms for quantum chemistry and as such, significant effort has been devoted to designing efficient implementations.…

Paper

Finite Rate QLDPC-GKP Coding Scheme that Surpasses the CSS Hamming Bound

Nithin Raveendran, Narayanan Rengaswamy, Filip Rozpędek, Ankur Raina, Liang Jiang, and Bane Vasić,

Quantum 6, 767 (2022).

Quantum error correction has recently been shown to benefit greatly from specific physical encodings of the code qubits. In particular, several researchers have considered the individual cod…

Paper

Quantum XYZ Product Codes

Anthony Leverrier, Simon Apers, and Christophe Vuillot,

Quantum 6, 766 (2022).

We study a three-fold variant of the hypergraph product code construction, differing from the standard homological product of three classical codes. When instantiated with 3 classical LDPC c…

Paper

Naturally restricted subsets of nonsignaling correlations: typicality and convergence

Pei-Sheng Lin, Tamás Vértesi, and Yeong-Cherng Liang,

Quantum 6, 765 (2022).

It is well-known that in a Bell experiment, the observed correlation between measurement outcomes – as predicted by quantum theory – can be stronger than that allowed by local causality, yet…