Category: Paper

John Bostanci and John Watrous,

Quantum 6, 882 (2022).

This paper is concerned with complexity theoretic aspects of a general formulation of quantum game theory that models strategic interactions among rational agents that process and exchange q…

Jonas Landman, Natansh Mathur, Yun Yvonna Li, Martin Strahm, Skander Kazdaghli, Anupam Prakash, and Iordanis Kerenidis,

Quantum 6, 881 (2022).

Quantum machine learning techniques have been proposed as a way to potentially enhance performance in machine learning applications. In this paper, we introduce two new quantum methods for n…

Thiago Guerreiro, Francesco Coradeschi, Antonia Micol Frassino, Jennifer Rittenhouse West, and Enrico Junior Schioppa,

Quantum 6, 879 (2022).

The effective quantum field theory description of gravity, despite its non-renormalizability, allows for predictions beyond classical general relativity. As we enter the age of gravitational…

Jad C. Halimeh, Maarten Van Damme, Torsten V. Zache, Debasish Banerjee, and Philipp Hauke,

Quantum 6, 878 (2022).

Realizations of gauge theories in setups of quantum synthetic matter open up the possibility of probing salient exotic phenomena in condensed matter and high-energy physics, along with poten…

Ulysse Chabaud, Abhinav Deshpande, and Saeed Mehraban,

Quantum 6, 877 (2022).

The permanent is pivotal to both complexity theory and combinatorics. In quantum computing, the permanent appears in the expression of output amplitudes of linear optical computations, such…

Quynh T. Nguyen, Bobak T. Kiani, and Seth Lloyd,

Quantum 6, 876 (2022).

Many quantum algorithms for numerical linear algebra assume black-box access to a block-encoding of the matrix of interest, which is a strong assumption when the matrix is not sparse. Kernel…

Pavel Sekatski, Enky Oudot, Patrik Caspar, Rob Thew, and Nicolas Sangouard,

Quantum 6, 875 (2022).

Here we argue that the probability that a given source produces exactly a single photon is a natural quantity to benchmark single-photon sources as it certifies the absence of multi-photon c…

Daniel Huerga,

Quantum 6, 874 (2022).

We introduce a hybrid quantum-classical variational algorithm to simulate ground-state phase diagrams of frustrated quantum spin models in the thermodynamic limit. The method is based on a c…

Michael H. Goerz, Sebastián C. Carrasco, and Vladimir S. Malinovsky,

Quantum 6, 871 (2022).

We develop a framework of "semi-automatic differentiation" that combines existing gradient-based methods of quantum optimal control with automatic differentiation. The approach allows to opt…

Johannes Weidenfeller, Lucia C. Valor, Julien Gacon, Caroline Tornow, Luciano Bello, Stefan Woerner, and Daniel J. Egger,

Quantum 6, 870 (2022).

Quantum computers may provide good solutions to combinatorial optimization problems by leveraging the Quantum Approximate Optimization Algorithm (QAOA). The QAOA is often presented as an alg…

Pavel Sekatski and Martí Perarnau-Llobet,

Quantum 6, 869 (2022).

What is the minimum time required to take a temperature? In this paper, we solve this question for a large class of processes where temperature is inferred by measuring a probe (the thermome…

Cameron Calcluth, Alessandro Ferraro, and Giulia Ferrini,

Quantum 6, 867 (2022).

We study the classical simulatability of Gottesman-Kitaev-Preskill (GKP) states in combination with arbitrary displacements, a large set of symplectic operations and homodyne measurements. F…